Benchmark file generated by bmgpx bmgpx by Ron Parker bmgpx@parkrrrr.com LU1502 1038 USGS http://www.geocaching.com/mark/details.asp?PID=LU1502 1038 USGS Geocache Geocache 1038 USGS USGS Unknown Cache Regular 1 1 United States California NGS Datasheet <h1>1038 USGS</h1> <b> PID </b> LU1502 <br> <b> STATE/COUNTY</b> CA/HUMBOLDT <br> <b> USGS QUAD </b> LORD-ELLIS SUMMIT (1973) <br> <p> <h2>Current Survey Control</h2> <hr> <b> NAD 83(1986)</b> 40 54 32. (N) 123 48 39. (W) SCALED <br> <b> NAVD 88 </b> 317.209 (meters) 1040.71 (feet) ADJUSTED <br> <hr> <b> GEOID HEIGHT</b> -28.53 (meters) GEOID03 <br> <b> DYNAMIC HT </b> 317.048 (meters) 1040.18 (feet) COMP <br> <b> MODELED GRAV</b> 980,111.1 (mgal) NAVD 88 <br> <p> <b> VERT ORDER </b> FIRST CLASS II <br> <p>The horizontal coordinates were scaled from a topographic map and have an estimated accuracy of +/- 6 seconds. <p>The orthometric height was determined by differential leveling and adjusted by the National Geodetic Survey in June 1991. <p>The geoid height was determined by GEOID03. <p>The dynamic height is computed by dividing the NAVD 88 geopotential number by the normal gravity value computed on the Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45 degrees latitude (g = 980.6199 gals.). <p>The modeled gravity was interpolated from observed gravity values. <p> <table border=1><tr><td> </td><td> North </td><td> East </td><td> Units</td><td> Estimated Accuracy</td></tr><tr><td>SPC CA 1 </td><td> 676,520. </td><td> 1,847,460. </td><td> MT</td><td> (+/- 180 meters Scaled)</td></tr> </table> <p> <h2>Superseded Survey Control</h2> <p> NGVD 29 (??/??/92) 316.199 (m) 1037.40 (f) ADJ UNCH 1 2 <br> <p>Superseded values are not recommended for survey control. NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums. See file dsdata.txt to determine how the superseded data were derived. <p> <h2>Marker Information</h2>U.S. NATIONAL GRID SPATIAL ADDRESS: 10TDL317289(NAD 83) <br>MARKER: DD = SURVEY DISK <br>SETTING: 80 = SET IN A BOULDER <br>STAMPING: 1036.914 B 1906 <br>STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO <br>STABILITY: SURFACE MOTION <br>SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR <br>SATELLITE: SATELLITE OBSERVATIONS - October 23, 2002 <br> </table> <p> <h2>History</h2><table border=1><tr><td>Date </td><td>Condition </td><td>Report By</td></tr><tr><td>1906 </td><td>MONUMENTED </td><td>USGS</td></tr><tr><td>1935 </td><td>GOOD </td><td>NGS</td></tr><tr><td>20021023</td><td>GOOD </td><td>GEOCAC</td></tr> </table> <p> <h2>STATION DESCRIPTION </h2> <p>DESCRIBED BY NATIONAL GEODETIC SURVEY 1935 17.3 MI E FROM BLUE LAKE. 17.3 MILES EAST ALONG U.S. HIGHWAY 299 FROM BLUE LAKE, HUMBOLDT COUNTY, AT A HAIRPIN CURVE IN THE HIGHWAY, 100 FEET SOUTHEAST OF REDWOOD HOUSE IN 1931 (FORMERLY CALLED BERRYS RANCH HOUSE), JUST NORTH OF THREE LARGE FORKED OAK TREES, 16 FEET SOUTHWEST OF THE CENTERLINE OF THE HIGHWAY, AND IN THE WEST FACE OF A LARGE BOULDER. A UNITED STATES GEOLOGICAL SURVEY STANDARD DISK, STAMPED 1036.914 B 1906 AND SET VERTICALLY. <p> <h2>STATION RECOVERY (2002) </h2> <p>RECOVERY NOTE BY GEOCACHING 2002 (RRF) N 40 54.552 W 123 48.701 LV0312 108 http://www.geocaching.com/mark/details.asp?PID=LV0312 108 Geocache Geocache 108 CADH CADH Unknown Cache Regular 1 1 United States California NGS Datasheet <h1>108</h1> <b> PID </b> LV0312 <br> <b> STATE/COUNTY</b> CA/HUMBOLDT <br> <b> USGS QUAD </b> ARCATA NORTH (1972) <br> <p> <h2>Current Survey Control</h2> <hr> <b> NAD 83(1986)</b> 40 53 29. (N) 124 04 50. (W) SCALED <br> <b> NAVD 88 </b> 22.942 (meters) 75.27 (feet) ADJUSTED <br> <hr> <b> GEOID HEIGHT</b> -29.98 (meters) GEOID03 <br> <b> DYNAMIC HT </b> 22.932 (meters) 75.24 (feet) COMP <br> <b> MODELED GRAV</b> 980,213.7 (mgal) NAVD 88 <br> <p> <b> VERT ORDER </b> FIRST CLASS II <br> <p>The horizontal coordinates were scaled from a topographic map and have an estimated accuracy of +/- 6 seconds. <p>The orthometric height was determined by differential leveling and adjusted by the National Geodetic Survey in June 1991. <p>The geoid height was determined by GEOID03. <p>The dynamic height is computed by dividing the NAVD 88 geopotential number by the normal gravity value computed on the Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45 degrees latitude (g = 980.6199 gals.). <p>The modeled gravity was interpolated from observed gravity values. <p> <table border=1><tr><td> </td><td> North </td><td> East </td><td> Units</td><td> Estimated Accuracy</td></tr><tr><td>SPC CA 1 </td><td> 675,080. </td><td> 1,824,700. </td><td> MT</td><td> (+/- 180 meters Scaled)</td></tr> </table> <p> <h2>Superseded Survey Control</h2> <p> NGVD 29 (12/02/92) 21.916 (m) 71.90 (f) ADJUSTED 1 2 <br> <p>Superseded values are not recommended for survey control. NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums. See file dsdata.txt to determine how the superseded data were derived. <p> <h2>Marker Information</h2>U.S. NATIONAL GRID SPATIAL ADDRESS: 10TDL089272(NAD 83) <br>MARKER: DD = SURVEY DISK <br>SETTING: 31 = SET IN A PAVEMENT SUCH AS STREET, SIDEWALK, CURB, ETC. <br>SP_SET: BRIDGE WALKWAY <br>STAMPING: 108 H-1-ARC <br>MARK LOGO: CADH <br>STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY <br> </table> <p> <h2>History</h2><table border=1><tr><td>Date </td><td>Condition </td><td>Report By</td></tr><tr><td>UNK </td><td>MONUMENTED </td><td>CADH</td></tr><tr><td>1967 </td><td>GOOD </td><td>NGS</td></tr><tr><td>1971 </td><td>GOOD </td><td>NGS</td></tr><tr><td>1988 </td><td>GOOD </td><td>NGS</td></tr><tr><td>20020717</td><td>MARK NOT FOUND </td><td>CADT</td></tr> </table> <p> <h2>STATION DESCRIPTION </h2> <p>DESCRIBED BY NATIONAL GEODETIC SURVEY 1967 2 MI N FROM ARCATA. 2.05 MILES NORTH ALONG U.S. HIGHWAY 101 FROM FOURTH STREET OVERPASS AT ARCATA, 0.4 MILE SOUTH OF THE JUNCTION OF STATE HIGHWAY 299, IN THE TOP AND 0.3 FOOT NORTH OF THE SOUTH END OF THE EAST CONCRETE CURB OF ARCATA OVERHEAD BRIDGE NO. 4.79R, 18 FEET EAST OF THE CENTER LINE OF THE EAST LANES OF THE HIGHWAY, AND ABOUT 1 FOOT HIGHER THAN THE HIGHWAY. <p> <h2>STATION RECOVERY (1971) </h2> <p>RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1971 RECOVERED IN GOOD CONDITION. <p> <h2>STATION RECOVERY (1988) </h2> <p>RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1988 RECOVERED IN GOOD CONDITION. A NEW TO REACH FOLLOWS. 0.6 KM (0.35 MI) SOUTHERLY ALONG U.S. HIGHWAY 101 FROM THE JUNCTION OF STATE HIGHWAY 299 IN ARCATA. <p> <h2>STATION RECOVERY (2002) </h2> <p>RECOVERY NOTE BY CALTRANS 2002 (REB) I BELIEVE THIS MARK WAS DESTROYED DURING MODIFICATION OF ARCATA OVERHEAD BRIDGE 4.79R. LV0397 130 CAGS http://www.geocaching.com/mark/details.asp?PID=LV0397 130 CAGS Geocache Geocache 130 CAGS CGS Unknown Cache Regular 1 1 United States California NGS Datasheet <h1>130 CAGS</h1> <b> PID </b> LV0397 <br> <b> STATE/COUNTY</b> CA/HUMBOLDT <br> <b> USGS QUAD </b> SCOTIA (1970) <br> <p> <h2>Current Survey Control</h2> <hr> <b> NAD 83(1986)</b> 40 29 29. (N) 124 05 59. (W) SCALED <br> <b> NAVD 88 </b> 40.88 (+/-2cm) 134.1 (feet) VERTCON <br> <hr> <b> GEOID HEIGHT</b> -30.70 (meters) GEOID03 <br> <p> <b> VERT ORDER </b> SECOND CLASS 0 (See Below) <br> <p>The horizontal coordinates were scaled from a topographic map and have an estimated accuracy of +/- 6 seconds. <p>The NAVD 88 height was computed by applying the VERTCON shift value to the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.) The vertical order pertains to the NGVD 29 superseded value. <p>The geoid height was determined by GEOID03. <p> <table border=1><tr><td> </td><td> North </td><td> East </td><td> Units</td><td> Estimated Accuracy</td></tr><tr><td>SPC CA 1 </td><td> 630,720. </td><td> 1,822,020. </td><td> MT</td><td> (+/- 180 meters Scaled)</td></tr> </table> <p> <h2>Superseded Survey Control</h2> <p> NGVD 29 (??/??/??) 39.898 (m) 130.90 (f) ADJUSTED 2 0 <br> <p>Superseded values are not recommended for survey control. NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums. See file dsdata.txt to determine how the superseded data were derived. <p> <h2>Marker Information</h2>U.S. NATIONAL GRID SPATIAL ADDRESS: 10TDK068828(NAD 83) <br>MARKER: DD = SURVEY DISK <br>SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT <br>SP_SET: SET IN TOP OF CONCRETE MONUMENT <br>STAMPING: 130 1935 <br>STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO <br>STABILITY: SURFACE MOTION <br> </table> <p> <h2>History</h2><table border=1><tr><td>Date </td><td>Condition </td><td>Report By</td></tr><tr><td>1935 </td><td>MONUMENTED </td><td>CGS</td></tr><tr><td>1942 </td><td>GOOD </td><td>NGS</td></tr><tr><td>1967 </td><td>MARK NOT FOUND </td><td>NGS</td></tr> </table> <p> <h2>STATION DESCRIPTION </h2> <p>DESCRIBED BY NATIONAL GEODETIC SURVEY 1942 AT WILDWOOD. AT WILDWOOD, HUMBOLDT COUNTY, ON REDWOOD HIGHWAY, 130 FEET SOUTH EAST OF THE SOUTH CORNER OF THE VIOLA HOTEL, 63 FEET NORTHEAST OF THE CENTERLINE OF THE HIGHWAY, 48 FEET NORTHEAST OF THE NORTHWEST END OF THE BRIDGE OVER EEL RIVER, BETWEEN A CONCRETE PARAPET AND THE RIVER, AND NEAR A WHITE WOODEN WITNESS POST. A STATE SURVEY STANDARD DISK, STAMPED 130 1935 AND SET IN THE TOP OF A CONCRETE POST. <p> <h2>STATION RECOVERY (1967) </h2> <p>RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1967 MARK NOT FOUND. LU1429 17 RS USGS http://www.geocaching.com/mark/details.asp?PID=LU1429 17 RS USGS Geocache Geocache 17 RS USGS USGS Unknown Cache Regular 1 1 United States California NGS Datasheet <h1>17 RS USGS</h1> <b> PID </b> LU1429 <br> <b> STATE/COUNTY</b> CA/HUMBOLDT <br> <b> USGS QUAD </b> BRIDGEVILLE (1969) <br> <p> <h2>Current Survey Control</h2> <hr> <b> NAD 83(1986)</b> 40 28 10. (N) 123 47 56. (W) SCALED <br> <b> NAVD 88 </b> 197.72 (+/-2cm) 648.7 (feet) VERTCON <br> <hr> <b> GEOID HEIGHT</b> -29.64 (meters) GEOID03 <br> <p> <b> VERT ORDER </b> SECOND CLASS 0 (See Below) <br> <p>The horizontal coordinates were scaled from a topographic map and have an estimated accuracy of +/- 6 seconds. <p>The NAVD 88 height was computed by applying the VERTCON shift value to the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.) The vertical order pertains to the NGVD 29 superseded value. <p>The geoid height was determined by GEOID03. <p> <table border=1><tr><td> </td><td> North </td><td> East </td><td> Units</td><td> Estimated Accuracy</td></tr><tr><td>SPC CA 1 </td><td> 627,720. </td><td> 1,847,470. </td><td> MT</td><td> (+/- 180 meters Scaled)</td></tr> </table> <p> <h2>Superseded Survey Control</h2> <p> NGVD 29 (??/??/92) 196.752 (m) 645.51 (f) ADJ UNCH 2 0 <br> <p>Superseded values are not recommended for survey control. NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums. See file dsdata.txt to determine how the superseded data were derived. <p> <h2>Marker Information</h2>U.S. NATIONAL GRID SPATIAL ADDRESS: 10TDK322801(NAD 83) <br>MARKER: DD = SURVEY DISK <br>SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT <br>SP_SET: SET IN TOP OF CONCRETE MONUMENT <br>STAMPING: 645 17 RS 1933 <br>STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO <br>STABILITY: SURFACE MOTION <br>SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR <br>SATELLITE: SATELLITE OBSERVATIONS - May 18, 2003 <br> </table> <p> <h2>History</h2><table border=1><tr><td>Date </td><td>Condition </td><td>Report By</td></tr><tr><td>1933 </td><td>MONUMENTED </td><td>USGS</td></tr><tr><td>1949 </td><td>GOOD </td><td>NGS</td></tr><tr><td>20030518</td><td>GOOD </td><td>GEOCAC</td></tr> </table> <p> <h2>STATION DESCRIPTION </h2> <p>DESCRIBED BY NATIONAL GEODETIC SURVEY 1949 AT BRIDGEVILLE. AT BRIDGEVILLE, ABOUT 30 YARDS EAST OF THE POST OFFICE, ALONG STATE HIGHWAY 36, AT CONCRETE HIGHWAY BRIDGE 4-101 OVER THE VAN DUZEN RIVER, IN THE TOP OF THE CENTER OF THE SQUARE CONCRETE POST AT THE NORTH END OF THE EAST CONCRETE GUARD RAIL, 15 FEET EAST OF THE CENTERLINE OF THE HIGHWAY, AND ABOUT 4 FEET HIGHER THAN THE HIGHWAY. NOTE-- THIS MARK WAS ERRONEOUSLY DESIGNATED 81 RS BY THE U.S. COAST AND GEODETIC SURVEY DURING THE 1935 LEVELING. THE MARK IS IN GOOD CONDITION AND DOES NOT APPEAR TO HAVE BEEN DISTURBED. R.K.R. <p> <h2>STATION RECOVERY (2003) </h2> <p>RECOVERY NOTE BY GEOCACHING 2003 (JBC) AS DESCRIBED BY NATIONAL GEODETIC SURVEY IN 1949. BRIDGE DESCRIBED IS NO LONGER USED FOR VEHICULAR TRAFFIC. GIVEN TO REACH HOLDS, EXCEPT THAT 'ALONG STATE HIGHWAY 36' SHOULD BE CHANGED TO 'JUST SOUTH OF KNEELAND ROAD (COUNTY ROAD F6F060), WHERE IT TURNS NORTH, JUST EAST OF THE BRIDGEVILLE POST OFFICE', AND 'CONCRETE HIGHWAY BRIDGE 4-101 OVER THE VAN DUZEN RIVER' SHOULD BE CHANGED TO 'CONCRETE PEDESTRIAN BRIDGE, DESIGNATED 'HISTORIC BRIDGE - BRIDGEVILLE BRIDGE 1925', OVER THE VAN DUZEN RIVER'. LU1424 19 RS USGS http://www.geocaching.com/mark/details.asp?PID=LU1424 19 RS USGS Geocache Geocache 19 RS USGS USGS Unknown Cache Regular 1 1 United States California NGS Datasheet <h1>19 RS USGS</h1> <b> PID </b> LU1424 <br> <b> STATE/COUNTY</b> CA/HUMBOLDT <br> <b> USGS QUAD </b> BRIDGEVILLE (1969) <br> <p> <h2>Current Survey Control</h2> <hr> <b> NAD 83(1986)</b> 40 27 50. (N) 123 51 32. (W) SCALED <br> <b> NAVD 88 </b> 131.00 (+/-2cm) 429.8 (feet) VERTCON <br> <hr> <b> GEOID HEIGHT</b> -29.91 (meters) GEOID03 <br> <p> <b> VERT ORDER </b> SECOND CLASS 0 (See Below) <br> <p>The horizontal coordinates were scaled from a topographic map and have an estimated accuracy of +/- 6 seconds. <p>The NAVD 88 height was computed by applying the VERTCON shift value to the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.) The vertical order pertains to the NGVD 29 superseded value. <p>The geoid height was determined by GEOID03. <p> <table border=1><tr><td> </td><td> North </td><td> East </td><td> Units</td><td> Estimated Accuracy</td></tr><tr><td>SPC CA 1 </td><td> 627,210. </td><td> 1,842,370. </td><td> MT</td><td> (+/- 180 meters Scaled)</td></tr> </table> <p> <h2>Superseded Survey Control</h2> <p> NGVD 29 (??/??/92) 130.015 (m) 426.56 (f) ADJ UNCH 2 0 <br> <p>Superseded values are not recommended for survey control. NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums. See file dsdata.txt to determine how the superseded data were derived. <p> <h2>Marker Information</h2>U.S. NATIONAL GRID SPATIAL ADDRESS: 10TDK271796(NAD 83) <br>MARKER: DD = SURVEY DISK <br>SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT <br>SP_SET: SET IN TOP OF CONCRETE MONUMENT <br>STAMPING: 19 RS 426 1933 <br>STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO <br>STABILITY: SURFACE MOTION <br> </table> <p> <h2>History</h2><table border=1><tr><td>Date </td><td>Condition </td><td>Report By</td></tr><tr><td>1933 </td><td>MONUMENTED </td><td>USGS</td></tr><tr><td>1949 </td><td>GOOD </td><td>NGS</td></tr> </table> <p> <h2>STATION DESCRIPTION </h2> <p>DESCRIBED BY NATIONAL GEODETIC SURVEY 1949 3.8 MI W FROM BRIDGEVILLE. 3.8 MILES WEST ALONG STATE HIGHWAY 36 FROM THE POST OFFICE AT BRIDGEVILLE, AT CONCRETE BRIDGE 4-98 OVER THE VAN DUZEN RIVER, IN THE TOP OF THE APPROXIMATE CENTER OF THE SQUARE CONCRETE POST AT THE SOUTHWEST END OF THE SOUTHEAST CONCRETE GUARD RAIL, 14.0 FEET SOUTHEAST OF THE CENTERLINE OF THE HIGHWAY, AND ABOUT 3 FEET HIGHER THAN THE HIGHWAY. LU1422 20 RS USGS http://www.geocaching.com/mark/details.asp?PID=LU1422 20 RS USGS Geocache Geocache 20 RS USGS USGS Unknown Cache Regular 1 1 United States California NGS Datasheet <h1>20 RS USGS</h1> <b> PID </b> LU1422 <br> <b> STATE/COUNTY</b> CA/HUMBOLDT <br> <b> USGS QUAD </b> REDCREST (1969) <br> <p> <h2>Current Survey Control</h2> <hr> <b> NAD 83(1986)</b> 40 28 48. (N) 123 53 28. (W) SCALED <br> <b> NAVD 88 </b> 118.92 (+/-2cm) 390.2 (feet) VERTCON <br> <hr> <b> GEOID HEIGHT</b> -30.00 (meters) GEOID03 <br> <p> <b> VERT ORDER </b> SECOND CLASS 0 (See Below) <br> <p>The horizontal coordinates were scaled from a topographic map and have an estimated accuracy of +/- 6 seconds. <p>The NAVD 88 height was computed by applying the VERTCON shift value to the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.) The vertical order pertains to the NGVD 29 superseded value. <p>The geoid height was determined by GEOID03. <p> <table border=1><tr><td> </td><td> North </td><td> East </td><td> Units</td><td> Estimated Accuracy</td></tr><tr><td>SPC CA 1 </td><td> 629,050. </td><td> 1,839,670. </td><td> MT</td><td> (+/- 180 meters Scaled)</td></tr> </table> <p> <h2>Superseded Survey Control</h2> <p> NGVD 29 (??/??/92) 117.936 (m) 386.93 (f) ADJ UNCH 2 0 <br> <p>Superseded values are not recommended for survey control. NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums. See file dsdata.txt to determine how the superseded data were derived. <p> <h2>Marker Information</h2>U.S. NATIONAL GRID SPATIAL ADDRESS: 10TDK244814(NAD 83) <br>MARKER: DD = SURVEY DISK <br>SETTING: 36 = SET IN A MASSIVE STRUCTURE <br>SP_SET: BRIDGE <br>STAMPING: 20 RS <br>STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL <br> </table> <p> <h2>History</h2><table border=1><tr><td>Date </td><td>Condition </td><td>Report By</td></tr><tr><td>UNK </td><td>MONUMENTED </td><td>USGS</td></tr><tr><td>1948 </td><td>GOOD </td><td>NGS</td></tr> </table> <p> <h2>STATION DESCRIPTION </h2> <p>DESCRIBED BY NATIONAL GEODETIC SURVEY 1948 6.1 MI W FROM BRIDGEVILLE. 6.1 MILES WEST ALONG STATE HIGHWAY 36 FROM THE VAN DUZEN RIVER BRIDGE AT BRIDGEVILLE, HUMBOLDT COUNTY, AT THE SOUTHWEST CORNER OF A BRIDGE, IN THE CONCRETE RAIL, AND 36 FEET SOUTH OF THE CENTERLINE OF THE HIGHWAY. A UNITED STATES GEOLOGICAL SURVEY STANDARD DISK, STAMPED 20 RS. LU1418 22 RS USGS http://www.geocaching.com/mark/details.asp?PID=LU1418 22 RS USGS Geocache Geocache 22 RS USGS USGS Unknown Cache Regular 1 1 United States California NGS Datasheet <h1>22 RS USGS</h1> <b> PID </b> LU1418 <br> <b> STATE/COUNTY</b> CA/HUMBOLDT <br> <b> USGS QUAD </b> REDCREST (1969) <br> <p> <h2>Current Survey Control</h2> <hr> <b> NAD 83(1986)</b> 40 28 41. (N) 123 55 31. (W) SCALED <br> <b> NAVD 88 </b> 108.39 (+/-2cm) 355.6 (feet) VERTCON <br> <hr> <b> GEOID HEIGHT</b> -30.16 (meters) GEOID03 <br> <p> <b> VERT ORDER </b> SECOND CLASS 0 (See Below) <br> <p>The horizontal coordinates were scaled from a topographic map and have an estimated accuracy of +/- 6 seconds. <p>The NAVD 88 height was computed by applying the VERTCON shift value to the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.) The vertical order pertains to the NGVD 29 superseded value. <p>The geoid height was determined by GEOID03. <p> <table border=1><tr><td> </td><td> North </td><td> East </td><td> Units</td><td> Estimated Accuracy</td></tr><tr><td>SPC CA 1 </td><td> 628,900. </td><td> 1,836,770. </td><td> MT</td><td> (+/- 180 meters Scaled)</td></tr> </table> <p> <h2>Superseded Survey Control</h2> <p> NGVD 29 (??/??/92) 107.416 (m) 352.41 (f) ADJ UNCH 2 0 <br> <p>Superseded values are not recommended for survey control. NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums. See file dsdata.txt to determine how the superseded data were derived. <p> <h2>Marker Information</h2>U.S. NATIONAL GRID SPATIAL ADDRESS: 10TDK215812(NAD 83) <br>MARKER: DD = SURVEY DISK <br>SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT <br>SP_SET: SET IN TOP OF CONCRETE MONUMENT <br>STAMPING: 22 RS <br>STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO <br>STABILITY: SURFACE MOTION <br> </table> <p> <h2>History</h2><table border=1><tr><td>Date </td><td>Condition </td><td>Report By</td></tr><tr><td>UNK </td><td>MONUMENTED </td><td>USGS</td></tr><tr><td>1948 </td><td>GOOD </td><td>NGS</td></tr> </table> <p> <h2>STATION DESCRIPTION </h2> <p>DESCRIBED BY NATIONAL GEODETIC SURVEY 1948 8.6 MI W FROM BRIDGEVILLE. 8.6 MILES WEST ALONG STATE HIGHWAY 36 FROM THE VAN DUZEN RIVER BRIDGE AT BRIDGEVILLE, HUMBOLDT COUNTY, AND 21 FEET SOUTH OF THE CENTERLINE OF THE HIGHWAY. A UNITED STATES GEOLOGICAL SURVEY STANDARD DISK, STAMPED 22 RS AND SET IN THE TOP OF A CONCRETE POST. LU1416 23 RS USGS http://www.geocaching.com/mark/details.asp?PID=LU1416 23 RS USGS Geocache Geocache 23 RS USGS USGS Unknown Cache Regular 1 1 United States California NGS Datasheet <h1>23 RS USGS</h1> <b> PID </b> LU1416 <br> <b> STATE/COUNTY</b> CA/HUMBOLDT <br> <b> USGS QUAD </b> REDCREST (1969) <br> <p> <h2>Current Survey Control</h2> <hr> <b> NAD 83(1986)</b> 40 28 42. (N) 123 57 02. (W) SCALED <br> <b> NAVD 88 </b> 86.68 (+/-2cm) 284.4 (feet) VERTCON <br> <hr> <b> GEOID HEIGHT</b> -30.27 (meters) GEOID03 <br> <p> <b> VERT ORDER </b> SECOND CLASS 0 (See Below) <br> <p>The horizontal coordinates were scaled from a topographic map and have an estimated accuracy of +/- 6 seconds. <p>The NAVD 88 height was computed by applying the VERTCON shift value to the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.) The vertical order pertains to the NGVD 29 superseded value. <p>The geoid height was determined by GEOID03. <p> <table border=1><tr><td> </td><td> North </td><td> East </td><td> Units</td><td> Estimated Accuracy</td></tr><tr><td>SPC CA 1 </td><td> 628,980. </td><td> 1,834,630. </td><td> MT</td><td> (+/- 180 meters Scaled)</td></tr> </table> <p> <h2>Superseded Survey Control</h2> <p> NGVD 29 (??/??/92) 85.705 (m) 281.18 (f) ADJ UNCH 2 0 <br> <p>Superseded values are not recommended for survey control. NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums. See file dsdata.txt to determine how the superseded data were derived. <p> <h2>Marker Information</h2>U.S. NATIONAL GRID SPATIAL ADDRESS: 10TDK194812(NAD 83) <br>MARKER: DD = SURVEY DISK <br>SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT <br>SP_SET: SET IN TOP OF CONCRETE MONUMENT <br>STAMPING: 23 RS <br>STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO <br>STABILITY: SURFACE MOTION <br> </table> <p> <h2>History</h2><table border=1><tr><td>Date </td><td>Condition </td><td>Report By</td></tr><tr><td>UNK </td><td>MONUMENTED </td><td>USGS</td></tr><tr><td>1948 </td><td>GOOD </td><td>NGS</td></tr> </table> <p> <h2>STATION DESCRIPTION </h2> <p>DESCRIBED BY NATIONAL GEODETIC SURVEY 1948 9.7 MI E FROM CARLOTTA. 9.7 MILES EAST ALONG STATE HIGHWAY 36 FROM THE NORTHWESTERN PACIFIC RAILROAD STATION AT CARLOTTA, HUMBOLDT COUNTY, AND 30 FEET SOUTHWEST OF THE CENTERLINE OF THE HIGHWAY. A UNITED STATES GEOLOGICAL SURVEY STANDARD DISK, STAMPED 23 RS AND SET IN THE TOP OF A CONCRETE POST. LU1414 24 RS USGS http://www.geocaching.com/mark/details.asp?PID=LU1414 24 RS USGS Geocache Geocache 24 RS USGS USGS Unknown Cache Regular 1 1 United States California NGS Datasheet <h1>24 RS USGS</h1> <b> PID </b> LU1414 <br> <b> STATE/COUNTY</b> CA/HUMBOLDT <br> <b> USGS QUAD </b> REDCREST (1969) <br> <p> <h2>Current Survey Control</h2> <hr> <b> NAD 83(1986)</b> 40 29 27. (N) 123 58 11. (W) SCALED <br> <b> NAVD 88 </b> 93.04 (+/-2cm) 305.2 (feet) VERTCON <br> <hr> <b> GEOID HEIGHT</b> -30.32 (meters) GEOID03 <br> <p> <b> VERT ORDER </b> SECOND CLASS 0 (See Below) <br> <p>The horizontal coordinates were scaled from a topographic map and have an estimated accuracy of +/- 6 seconds. <p>The NAVD 88 height was computed by applying the VERTCON shift value to the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.) The vertical order pertains to the NGVD 29 superseded value. <p>The geoid height was determined by GEOID03. <p> <table border=1><tr><td> </td><td> North </td><td> East </td><td> Units</td><td> Estimated Accuracy</td></tr><tr><td>SPC CA 1 </td><td> 630,400. </td><td> 1,833,040. </td><td> MT</td><td> (+/- 180 meters Scaled)</td></tr> </table> <p> <h2>Superseded Survey Control</h2> <p> NGVD 29 (??/??/92) 92.066 (m) 302.05 (f) ADJ UNCH 2 0 <br> <p>Superseded values are not recommended for survey control. NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums. See file dsdata.txt to determine how the superseded data were derived. <p> <h2>Marker Information</h2>U.S. NATIONAL GRID SPATIAL ADDRESS: 10TDK178826(NAD 83) <br>MARKER: DD = SURVEY DISK <br>SETTING: 66 = SET IN ROCK OUTCROP <br>SP_SET: ROCK OUTCROP <br>STAMPING: 24 RS <br>STABILITY: A = MOST RELIABLE AND EXPECTED TO HOLD <br>STABILITY: POSITION/ELEVATION WELL <br> </table> <p> <h2>History</h2><table border=1><tr><td>Date </td><td>Condition </td><td>Report By</td></tr><tr><td>UNK </td><td>MONUMENTED </td><td>USGS</td></tr><tr><td>1948 </td><td>GOOD </td><td>NGS</td></tr> </table> <p> <h2>STATION DESCRIPTION </h2> <p>DESCRIBED BY NATIONAL GEODETIC SURVEY 1948 7.7 MI E FROM CARLOTTA. 7.7 MILES EAST ALONG STATE HIGHWAY 36 FROM THE NORTHWESTERN PACIFIC RAILROAD STATION AT CARLOTTA, HUMBOLDT COUNTY, 27 FEET SOUTHEAST OF THE CENTERLINE OF THE HIGHWAY, AND IN THE TOP OF A ROCK OUTCROP. A UNITED STATES GEOLOGICAL SURVEY STANDARD DISK, STAMPED 24 RS. LU1358 2448.2 USGS http://www.geocaching.com/mark/details.asp?PID=LU1358 2448.2 USGS Geocache Geocache 2448.2 USGS USGS Unknown Cache Regular 1 1 United States California NGS Datasheet <h1>2448.2 USGS</h1> <b> PID </b> LU1358 <br> <b> STATE/COUNTY</b> CA/HUMBOLDT <br> <b> USGS QUAD </b> HARRIS (1969) <br> <p> <h2>Current Survey Control</h2> <hr> <b> NAD 83(1986)</b> 40 06 29. (N) 123 42 50. (W) SCALED <br> <b> NAVD 88 </b> 747.50 (+/-2cm) 2452.4 (feet) VERTCON <br> <hr> <b> GEOID HEIGHT</b> -30.02 (meters) GEOID03 <br> <p> <b> VERT ORDER </b> SECOND CLASS 0 (See Below) <br> <p>The horizontal coordinates were scaled from a topographic map and have an estimated accuracy of +/- 6 seconds. <p>The NAVD 88 height was computed by applying the VERTCON shift value to the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.) The vertical order pertains to the NGVD 29 superseded value. <p>The geoid height was determined by GEOID03. <p> <table border=1><tr><td> </td><td> North </td><td> East </td><td> Units</td><td> Estimated Accuracy</td></tr><tr><td>SPC CA 1 </td><td> 587,450. </td><td> 1,853,890. </td><td> MT</td><td> (+/- 180 meters Scaled)</td></tr> </table> <p> <h2>Superseded Survey Control</h2> <p> NGVD 29 (??/??/92) 746.550 (m) 2449.31 (f) ADJ UNCH 2 0 <br> <p>Superseded values are not recommended for survey control. NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums. See file dsdata.txt to determine how the superseded data were derived. <p> <h2>Marker Information</h2>U.S. NATIONAL GRID SPATIAL ADDRESS: 10TDK391399(NAD 83) <br>MARKER: N = NAIL <br>SETTING: 30 = SET IN A LIGHT STRUCTURE <br>SP_SET: TREE <br>STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY <br> </table> <p> <h2>History</h2><table border=1><tr><td>Date </td><td>Condition </td><td>Report By</td></tr><tr><td>UNK </td><td>MONUMENTED </td><td>USGS</td></tr><tr><td>1942 </td><td>GOOD </td><td>NGS</td></tr> </table> <p> <h2>STATION DESCRIPTION </h2> <p>DESCRIBED BY NATIONAL GEODETIC SURVEY 1942 4.5 MI NW FROM HARRIS. 4.5 MILES NORTHWEST ALONG THE GARBERVILLE ROAD FROM THE PUBLIC SCHOOL AT HARRIS, HUMBOLDT COUNTY, 2.9 MILES SOUTHEAST OF ROBINSON RANCH IN 1935, AT A STREAM CROSSING, ON THE NORTH EDGE OF A SHARP ANGLE IN THE ROAD, AND IN THE SOUTH ROOT OF A 15-INCH OAK TREE PAINTED 2448.2. A UNITED STATES GEOLOGICAL SURVEY STANDARD COPPER NAIL AND WASHER. LV0336 26 RS USGS http://www.geocaching.com/mark/details.asp?PID=LV0336 26 RS USGS Geocache Geocache 26 RS USGS USGS Unknown Cache Regular 1 1 United States California NGS Datasheet <h1>26 RS USGS</h1> <b> PID </b> LV0336 <br> <b> STATE/COUNTY</b> CA/HUMBOLDT <br> <b> USGS QUAD </b> HYDESVILLE (1979) <br> <p> <h2>Current Survey Control</h2> <hr> <b> NAD 83(1986)</b> 40 30 44. (N) 124 00 48. (W) SCALED <br> <b> NAVD 88 </b> 50.84 (+/-2cm) 166.8 (feet) VERTCON <br> <hr> <b> GEOID HEIGHT</b> -30.45 (meters) GEOID03 <br> <p> <b> VERT ORDER </b> SECOND CLASS 0 (See Below) <br> <p>The horizontal coordinates were scaled from a topographic map and have an estimated accuracy of +/- 6 seconds. <p>The NAVD 88 height was computed by applying the VERTCON shift value to the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.) The vertical order pertains to the NGVD 29 superseded value. <p>The geoid height was determined by GEOID03. <p> <table border=1><tr><td> </td><td> North </td><td> East </td><td> Units</td><td> Estimated Accuracy</td></tr><tr><td>SPC CA 1 </td><td> 632,860. </td><td> 1,829,400. </td><td> MT</td><td> (+/- 180 meters Scaled)</td></tr> </table> <p> <h2>Superseded Survey Control</h2> <p> NGVD 29 (??/??/??) 49.864 (m) 163.60 (f) ADJUSTED 2 0 <br> <p>Superseded values are not recommended for survey control. NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums. See file dsdata.txt to determine how the superseded data were derived. <p> <h2>Marker Information</h2>U.S. NATIONAL GRID SPATIAL ADDRESS: 10TDK141851(NAD 83) <br>MARKER: DD = SURVEY DISK <br>SETTING: 0 = UNSPECIFIED SETTING <br>STAMPING: 26 RS <br>STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY <br> </table> <p> <h2>History</h2><table border=1><tr><td>Date </td><td>Condition </td><td>Report By</td></tr><tr><td>UNK </td><td>MONUMENTED </td><td>USGS</td></tr><tr><td>1935 </td><td>GOOD </td><td>NGS</td></tr> </table> <p> <h2>STATION DESCRIPTION </h2> <p>DESCRIBED BY NATIONAL GEODETIC SURVEY 1935 3.6 MI E FROM CARLOTTA. 3.6 MILES EAST ALONG STATE HIGHWAY 36 FROM THE NORTHWESTERN PACIFIC RAILROAD STATION AT CARLOTTA, HUMBOLDT COUNTY, 75 FEET SOUTHEAST OF A HOUSE OWNED IN 1935 BY THE HAMMOND LUMBER CO., AND 30 FEET NORTH OF THE CENTERLINE OF THE HIGHWAY. A UNITED STATES GEOLOGICAL SURVEY STANDARD DISK, STAMPED 26 RS AND SET IN A DRILL HOLE. LV0333 28 RS RESET 1967 http://www.geocaching.com/mark/details.asp?PID=LV0333 28 RS RESET 1967 Geocache Geocache 28 RS RESET 1967 CADH Unknown Cache Regular 1 1 United States California NGS Datasheet <h1>28 RS RESET 1967</h1> <b> PID </b> LV0333 <br> <b> STATE/COUNTY</b> CA/HUMBOLDT <br> <b> USGS QUAD </b> HYDESVILLE (1979) <br> <p> <h2>Current Survey Control</h2> <hr> <b> NAD 83(1986)</b> 40 32 14. (N) 124 03 48. (W) SCALED <br> <b> NAVD 88 </b> 38.91 (+/-2cm) 127.7 (feet) VERTCON <br> <hr> <b> GEOID HEIGHT</b> -30.59 (meters) GEOID03 <br> <p> <b> VERT ORDER </b> THIRD (See Below) <br> <p>The horizontal coordinates were scaled from a topographic map and have an estimated accuracy of +/- 6 seconds. <p>The NAVD 88 height was computed by applying the VERTCON shift value to the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.) The vertical order pertains to the NGVD 29 superseded value. <p>The geoid height was determined by GEOID03. <p> <table border=1><tr><td> </td><td> North </td><td> East </td><td> Units</td><td> Estimated Accuracy</td></tr><tr><td>SPC CA 1 </td><td> 635,730. </td><td> 1,825,230. </td><td> MT</td><td> (+/- 180 meters Scaled)</td></tr> </table> <p> <h2>Superseded Survey Control</h2> <p> NGVD 29 (??/??/??) 37.92 (m) 124.4 (f) RESET 3 <br> <p>Superseded values are not recommended for survey control. NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums. See file dsdata.txt to determine how the superseded data were derived. <p> <h2>Marker Information</h2>U.S. NATIONAL GRID SPATIAL ADDRESS: 10TDK099879(NAD 83) <br>MARKER: DD = SURVEY DISK <br>SETTING: 36 = SET IN A MASSIVE STRUCTURE <br>SP_SET: BRIDGE <br>STAMPING: 28 RS USGS RESET 1967 <br>STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL <br> </table> <p> <h2>History</h2><table border=1><tr><td>Date </td><td>Condition </td><td>Report By</td></tr><tr><td>1967 </td><td>MONUMENTED </td><td>CADH</td></tr> </table> <p> <h2>STATION DESCRIPTION </h2> <p>DESCRIBED BY CA DIV OF HIGHWAYS 1967 1.9 MI E FROM HYDESVILLE. ABOUT 1.9 MILES EAST ALONG STATE HIGHWAY 36 FROM THE SCHOOL AT HYDESVILLE, AT THE WEST END OF A RAILROAD BRIDGE OVER YAGER CREEK, 12 FEET NORTH OF THE CENTER LINE OF THE TRACKS, AND SET IN THE TOP OF THE CONCRETE ABUTMENT. LV0332 28 RS USGS http://www.geocaching.com/mark/details.asp?PID=LV0332 28 RS USGS Geocache Geocache 28 RS USGS CGS Unknown Cache Regular 1 1 United States California NGS Datasheet <h1>28 RS USGS</h1> <b> PID </b> LV0332 <br> <b> STATE/COUNTY</b> CA/HUMBOLDT <br> <b> USGS QUAD </b> HYDESVILLE (1979) <br> <p> <h2>Current Survey Control</h2> <hr> <b> NAD 83(1986)</b> 40 32 13. (N) 124 03 48. (W) SCALED <br> <b> NAVD 88 </b> 40.28 (+/-2cm) 132.2 (feet) VERTCON <br> <hr> <b> GEOID HEIGHT</b> -30.59 (meters) GEOID03 <br> <p> <b> VERT ORDER </b> SECOND CLASS 0 (See Below) <br> <p>The horizontal coordinates were scaled from a topographic map and have an estimated accuracy of +/- 6 seconds. <p>The NAVD 88 height was computed by applying the VERTCON shift value to the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.) The vertical order pertains to the NGVD 29 superseded value. <p>The geoid height was determined by GEOID03. <p> <table border=1><tr><td> </td><td> North </td><td> East </td><td> Units</td><td> Estimated Accuracy</td></tr><tr><td>SPC CA 1 </td><td> 635,700. </td><td> 1,825,220. </td><td> MT</td><td> (+/- 180 meters Scaled)</td></tr> </table> <p> <h2>Superseded Survey Control</h2> <p> NGVD 29 (??/??/??) 39.294 (m) 128.92 (f) ADJUSTED 2 0 <br> <p>Superseded values are not recommended for survey control. NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums. See file dsdata.txt to determine how the superseded data were derived. <p> <h2>Marker Information</h2>U.S. NATIONAL GRID SPATIAL ADDRESS: 10TDK099878(NAD 83) <br>MARKER: DD = SURVEY DISK <br>SETTING: 36 = SET IN A MASSIVE STRUCTURE <br>SP_SET: PIER <br>STAMPING: 28 RS 1933 <br>STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL <br> </table> <p> <h2>History</h2><table border=1><tr><td>Date </td><td>Condition </td><td>Report By</td></tr><tr><td>1933 </td><td>MONUMENTED </td><td>CGS</td></tr><tr><td>1953 </td><td>GOOD </td><td>NGS</td></tr> </table> <p> <h2>STATION DESCRIPTION </h2> <p>DESCRIBED BY NATIONAL GEODETIC SURVEY 1953 1.9 MI E FROM HYDESVILLE. 1.9 MILES EAST ALONG STATE HIGHWAY 36 FROM THE PUBLIC SCHOOL AT HYDESVILLE, HUMBOLDT COUNTY, AT A BRIDGE OVER YAGER CREEK (A TRIBUTARY TO VAN DUZEN RIVER), IN THE TOP OF THE NORTH END OF THE WEST PIER OF FOUR PIERS, AND 12.5 FEET NORTH OF THE CENTERLINE OF THE HIGHWAY. A UNITED STATES GEOLOGICAL SURVEY STANDARD DISK, STAMPED 28 RS 1933. LU1533 3080 USGS http://www.geocaching.com/mark/details.asp?PID=LU1533 3080 USGS Geocache Geocache 3080 USGS USGS Unknown Cache Regular 1 1 United States California NGS Datasheet <h1>3080 USGS</h1> <b> PID </b> LU1533 <br> <b> STATE/COUNTY</b> CA/HUMBOLDT <br> <b> USGS QUAD </b> LORD-ELLIS SUMMIT (1973) <br> <p> <h2>Current Survey Control</h2> <hr> <b> NAD 83(1986)</b> 40 53 15. (N) 123 51 57. (W) SCALED <br> <b> NAVD 88 </b> 939.87 (+/-2cm) 3083.6 (feet) VERTCON <br> <hr> <b> GEOID HEIGHT</b> -28.82 (meters) GEOID03 <br> <p> <b> VERT ORDER </b> SECOND CLASS 0 (See Below) <br> <p>The horizontal coordinates were scaled from a topographic map and have an estimated accuracy of +/- 6 seconds. <p>The NAVD 88 height was computed by applying the VERTCON shift value to the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.) The vertical order pertains to the NGVD 29 superseded value. <p>The geoid height was determined by GEOID03. <p> <table border=1><tr><td> </td><td> North </td><td> East </td><td> Units</td><td> Estimated Accuracy</td></tr><tr><td>SPC CA 1 </td><td> 674,240. </td><td> 1,842,780. </td><td> MT</td><td> (+/- 180 meters Scaled)</td></tr> </table> <p> <h2>Superseded Survey Control</h2> <p> NGVD 29 (??/??/92) 938.842 (m) 3080.18 (f) ADJ UNCH 2 0 <br> <p>Superseded values are not recommended for survey control. NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums. See file dsdata.txt to determine how the superseded data were derived. <p> <h2>Marker Information</h2>U.S. NATIONAL GRID SPATIAL ADDRESS: 10TDL270266(NAD 83) <br>MARKER: DB = BENCH MARK DISK <br>SETTING: 80 = SET IN A BOULDER <br>STAMPING: 3080 06 <br>STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO <br>STABILITY: SURFACE MOTION <br> </table> <p> <h2>History</h2><table border=1><tr><td>Date </td><td>Condition </td><td>Report By</td></tr><tr><td>UNK </td><td>MONUMENTED </td><td>USGS</td></tr><tr><td>1942 </td><td>GOOD </td><td>NGS</td></tr> </table> <p> <h2>STATION DESCRIPTION </h2> <p>DESCRIBED BY NATIONAL GEODETIC SURVEY 1942 13.6 MI SE FROM KORBEL. ABOUT 10 MILES EAST ALONG U.S. HIGHWAY 299 FROM KORBEL, HUMBOLDT COUNTY, THENCE 3.6 MILES SOUTH ALONG THE BALD MOUNTAIN ROAD, 0.4 MILE NORTH OF SOME OLD LOGGING-CAMP BUILDINGS IN 1942, 168 FEET SOUTH OF THE JUNCTION OF A ROAD LEADING EAST INTO AN OPEN FIELD, 21 FEET SOUTH OF A LONE DOUGLAS FIR TREE, 12 FEET EAST OF THE CENTERLINE OF THE ROAD, IN THE TOP OF A BOULDER, AND ABOUT 3-1/2 FEET ABOVE THE LEVEL OF THE ROAD, A STANDARD DIS, (USGS), STAMPED 3080 06. LV0277 32 http://www.geocaching.com/mark/details.asp?PID=LV0277 32 Geocache Geocache 32 CA1220 CA1220 Unknown Cache Regular 1 1 United States California NGS Datasheet <h1>32</h1> <b> PID </b> LV0277 <br> <b> STATE/COUNTY</b> CA/HUMBOLDT <br> <b> USGS QUAD </b> EUREKA (1972) <br> <p> <h2>Current Survey Control</h2> <hr> <b> NAD 83(1986)</b> 40 47 28. (N) 124 10 40. (W) SCALED <br> <b> NAVD 88 </b> 4.810 (meters) 15.78 (feet) ADJUSTED <br> <hr> <b> GEOID HEIGHT</b> -30.58 (meters) GEOID03 <br> <b> DYNAMIC HT </b> 4.808 (meters) 15.77 (feet) COMP <br> <b> MODELED GRAV</b> 980,206.8 (mgal) NAVD 88 <br> <p> <b> VERT ORDER </b> FIRST CLASS II <br> <p>The horizontal coordinates were scaled from a topographic map and have an estimated accuracy of +/- 6 seconds. <p>The orthometric height was determined by differential leveling and adjusted by the National Geodetic Survey in June 1991. <p>The geoid height was determined by GEOID03. <p>The dynamic height is computed by dividing the NAVD 88 geopotential number by the normal gravity value computed on the Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45 degrees latitude (g = 980.6199 gals.). <p>The modeled gravity was interpolated from observed gravity values. <p> <table border=1><tr><td> </td><td> North </td><td> East </td><td> Units</td><td> Estimated Accuracy</td></tr><tr><td>SPC CA 1 </td><td> 664,150. </td><td> 1,816,230. </td><td> MT</td><td> (+/- 180 meters Scaled)</td></tr> </table> <p> <h2>Superseded Survey Control</h2> <p> NGVD 29 (12/02/92) 3.804 (m) 12.48 (f) ADJUSTED 1 2 <br> <p>Superseded values are not recommended for survey control. NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums. See file dsdata.txt to determine how the superseded data were derived. <p> <h2>Marker Information</h2>U.S. NATIONAL GRID SPATIAL ADDRESS: 10TDL006162(NAD 83) <br>MARKER: B = BOLT <br>SETTING: 9 = SET IN PREFABRICATED CONCRETE POST IMBEDDED IN GROUND <br>SP_SET: PREFAB CONC. BLOCK IN EARTH <br>MARK LOGO: CA1220 <br>STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY <br> </table> <p> <h2>History</h2><table border=1><tr><td>Date </td><td>Condition </td><td>Report By</td></tr><tr><td>UNK </td><td>MONUMENTED </td><td>CA1220</td></tr><tr><td>1967 </td><td>GOOD </td><td>NGS</td></tr><tr><td>1971 </td><td>GOOD</td><td>NGS</td></tr><tr><td>19880221</td><td>GOOD </td><td>NGS</td></tr> </table> <p> <h2>STATION DESCRIPTION </h2> <p>DESCRIBED BY NATIONAL GEODETIC SURVEY 1967 AT EUREKA. AT EUREKA, ALONG U.S. HIGHWAY 101 (BROADWAY), IN THE CENTER OF THE INTERSECTION OF BROADWAY AND WABASH AVENUE, AND IN THE TOP OF A CONCRETE POST 1 FOOT UNDER GROUND. ACCESS IS HAD THRU THE REMOVAL OF A MAN HOLE COVER MARKED WATER. <p> <h2>STATION RECOVERY (1971) </h2> <p>RECOVERED 1971 RECOVERED IN GOOD CONDITION. <p> <h2>STATION RECOVERY (1988) </h2> <p>RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1988 RECOVERED IN GOOD CONDITION. MX0609 320.75 H CO http://www.geocaching.com/mark/details.asp?PID=MX0609 320.75 H CO Geocache Geocache 320.75 H CO CA-023 Unknown Cache Regular 1 1 United States California NGS Datasheet <h1>320.75 H CO</h1> <b> PID </b> MX0609 <br> <b> STATE/COUNTY</b> CA/HUMBOLDT <br> <b> USGS QUAD </b> HOOPA (1979) <br> <p> <h2>Current Survey Control</h2> <hr> <b> NAD 83(1986)</b> 41 03 41. (N) 123 41 06. (W) SCALED <br> <b> NAVD 88 </b> 98.734 (meters) 323.93 (feet) ADJUSTED <br> <hr> <b> GEOID HEIGHT</b> -27.97 (meters) GEOID03 <br> <b> DYNAMIC HT </b> 98.685 (meters) 323.77 (feet) COMP <br> <b> MODELED GRAV</b> 980,138.9 (mgal) NAVD 88 <br> <p> <b> VERT ORDER </b> SECOND CLASS 0 <br> <p>The horizontal coordinates were scaled from a topographic map and have an estimated accuracy of +/- 6 seconds. <p>The orthometric height was determined by differential leveling and adjusted by the National Geodetic Survey in June 1991. <p>The geoid height was determined by GEOID03. <p>The dynamic height is computed by dividing the NAVD 88 geopotential number by the normal gravity value computed on the Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45 degrees latitude (g = 980.6199 gals.). <p>The modeled gravity was interpolated from observed gravity values. <p> <table border=1><tr><td> </td><td> North </td><td> East </td><td> Units</td><td> Estimated Accuracy</td></tr><tr><td>SPC CA 1 </td><td> 693,240. </td><td> 1,858,390. </td><td> MT</td><td> (+/- 180 meters Scaled)</td></tr> </table> <p> <h2>Superseded Survey Control</h2> <p> NGVD 29 (??/??/??) 97.716 (m) 320.59 (f) ADJUSTED 2 0 <br> <p>Superseded values are not recommended for survey control. NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums. See file dsdata.txt to determine how the superseded data were derived. <p> <h2>Marker Information</h2>U.S. NATIONAL GRID SPATIAL ADDRESS: 10TDL424457(NAD 83) <br>MARKER: DD = SURVEY DISK <br>SETTING: 36 = SET IN A MASSIVE STRUCTURE <br>SP_SET: BRIDGE <br>STAMPING: 320.75 <br>STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL <br> </table> <p> <h2>History</h2><table border=1><tr><td>Date </td><td>Condition </td><td>Report By</td></tr><tr><td>UNK </td><td>MONUMENTED </td><td>CA-023</td></tr><tr><td>1935 </td><td>GOOD </td><td>NGS</td></tr> </table> <p> <h2>STATION DESCRIPTION </h2> <p>DESCRIBED BY NATIONAL GEODETIC SURVEY 1935 1.1 MI N FROM HOOPA. 1.1 MILES NORTH ALONG STATE HIGHWAY 96 FROM HOOPA, HUMBOLDT COUNTY, AT THE HIGHWAY BRIDGE OVER TRINITY RIVER, AND IN THE EAST END OF THE NORTH ABUTMENT. A HUMBOLDT COUNTY BRONZE DISK, STAMPED 320.75. LV0137 36 RS USGS http://www.geocaching.com/mark/details.asp?PID=LV0137 36 RS USGS Geocache Geocache 36 RS USGS USGS Unknown Cache Regular 1 1 United States California NGS Datasheet <h1>36 RS USGS</h1> <b> PID </b> LV0137 <br> <b> STATE/COUNTY</b> CA/HUMBOLDT <br> <b> USGS QUAD </b> CRANNELL (1975) <br> <p> <h2>Current Survey Control</h2> <hr> <b> NAD 83(1986)</b> 41 00 34. (N) 124 04 58. (W) SCALED <br> <b> NAVD 88 </b> 11.479 (meters) 37.66 (feet) ADJUSTED <br> <hr> <b> GEOID HEIGHT</b> -29.74 (meters) GEOID03 <br> <b> DYNAMIC HT </b> 11.474 (meters) 37.64 (feet) COMP <br> <b> MODELED GRAV</b> 980,220.7 (mgal) NAVD 88 <br> <p> <b> VERT ORDER </b> SECOND CLASS 0 <br> <p>The horizontal coordinates were scaled from a topographic map and have an estimated accuracy of +/- 6 seconds. <p>The orthometric height was determined by differential leveling and adjusted by the National Geodetic Survey in June 1991. <p>The geoid height was determined by GEOID03. <p>The dynamic height is computed by dividing the NAVD 88 geopotential number by the normal gravity value computed on the Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45 degrees latitude (g = 980.6199 gals.). <p>The modeled gravity was interpolated from observed gravity values. <p> <table border=1><tr><td> </td><td> North </td><td> East </td><td> Units</td><td> Estimated Accuracy</td></tr><tr><td>SPC CA 1 </td><td> 688,190. </td><td> 1,824,820. </td><td> MT</td><td> (+/- 180 meters Scaled)</td></tr> </table> <p> <h2>Superseded Survey Control</h2> <p> NGVD 29 (??/??/??) 10.452 (m) 34.29 (f) ADJUSTED 2 0 <br> <p>Superseded values are not recommended for survey control. NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums. See file dsdata.txt to determine how the superseded data were derived. <p> <h2>Marker Information</h2>U.S. NATIONAL GRID SPATIAL ADDRESS: 10TDL089403(NAD 83) <br>MARKER: DD = SURVEY DISK <br>SETTING: 30 = SET IN A LIGHT STRUCTURE <br>SP_SET: CONCRETE FOOTING <br>STAMPING: 36 RS 1933 <br>STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY <br> </table> <p> <h2>History</h2><table border=1><tr><td>Date </td><td>Condition </td><td>Report By</td></tr><tr><td>1933 </td><td>MONUMENTED </td><td>USGS</td></tr><tr><td>1947 </td><td>GOOD </td><td>NGS</td></tr><tr><td>1965 </td><td>MARK NOT FOUND </td><td>USPSQD</td></tr> </table> <p> <h2>STATION DESCRIPTION </h2> <p>DESCRIBED BY NATIONAL GEODETIC SURVEY 1947 AT CRANNELL. AT CRANNELL, HUMBOLDT COUNTY, ON AN ABANDONED RAILROAD, 7 FEET EAST OF THE NORTHEAST CORNER OF THE YARD OFFICE, AND IN THE CONCRETE FOOTING OF THE 12- BY 12-INCH WOODEN UPRIGHTS. A UNITED STATES GEOLOGICAL SURVEY STANDARD DISK, STAMPED 36 RS 1933. <p> <h2>STATION RECOVERY (1965) </h2> <p>RECOVERY NOTE BY US POWER SQUADRON 1965 (LPS) MARK NOT FOUND. LV0244 36.23 NWPRR http://www.geocaching.com/mark/details.asp?PID=LV0244 36.23 NWPRR Geocache Geocache 36.23 NWPRR NWPRR Unknown Cache Regular 1 1 United States California NGS Datasheet <h1>36.23 NWPRR</h1> <b> PID </b> LV0244 <br> <b> STATE/COUNTY</b> CA/HUMBOLDT <br> <b> USGS QUAD </b> FORTUNA (1972) <br> <p> <h2>Current Survey Control</h2> <hr> <b> NAD 83(1986)</b> 40 37 02. (N) 124 12 02. (W) SCALED <br> <b> NAVD 88 </b> 11.42 (+/-2cm) 37.5 (feet) VERTCON <br> <hr> <b> GEOID HEIGHT</b> -30.97 (meters) GEOID03 <br> <p> <b> VERT ORDER </b> FIRST CLASS II (See Below) <br> <p>The horizontal coordinates were scaled from a topographic map and have an estimated accuracy of +/- 6 seconds. <p>The NAVD 88 height was computed by applying the VERTCON shift value to the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.) The vertical order pertains to the NGVD 29 superseded value. <p>The geoid height was determined by GEOID03. <p> <table border=1><tr><td> </td><td> North </td><td> East </td><td> Units</td><td> Estimated Accuracy</td></tr><tr><td>SPC CA 1 </td><td> 644,900. </td><td> 1,813,830. </td><td> MT</td><td> (+/- 180 meters Scaled)</td></tr> </table> <p> <h2>Superseded Survey Control</h2> <p> NGVD 29 (??/??/??) 10.432 (m) 34.23 (f) ADJUSTED 1 2 <br> <p>Superseded values are not recommended for survey control. NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums. See file dsdata.txt to determine how the superseded data were derived. <p> <h2>Marker Information</h2>U.S. NATIONAL GRID SPATIAL ADDRESS: 10TCK984969(NAD 83) <br>MARKER: S = SPIKE <br>SETTING: 17 = SET INTO TOP OF METAL PIPE DRIVEN INTO GROUND <br>SP_SET: METAL PIPE DRIVEN INTO GROUND <br>STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY <br> </table> <p> <h2>History</h2><table border=1><tr><td>Date </td><td>Condition </td><td>Report By</td></tr><tr><td>UNK </td><td>MONUMENTED </td><td>NWPRR</td></tr><tr><td>1935 </td><td>GOOD </td><td>NGS</td></tr><tr><td>1967 </td><td>MARK NOT FOUND </td><td>NGS</td></tr> </table> <p> <h2>STATION DESCRIPTION </h2> <p>DESCRIBED BY NATIONAL GEODETIC SURVEY 1935 AT FERNBRIDGE. AT FERNBRIDGE, HUMBOLDT COUNTY, ON THE NORTHWESTERN PACIFIC RAILROAD, 34.5 FEET NORTH OF THE SIGNAL AT DOOR 1 OF THE STATION, AND 8 FEET NORTH OF THE CENTERLINE OF THE TRACK. A RAILROAD SPIKE, DRIVEN IN THE TOP OF A 2-INCH IRON PIPE PROJECTING 17 INCHES ABOVE GROUND. <p> <h2>STATION RECOVERY (1967) </h2> <p>RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1967 MARK NOT FOUND. LU1376 452.8 USGS http://www.geocaching.com/mark/details.asp?PID=LU1376 452.8 USGS Geocache Geocache 452.8 USGS USGS Unknown Cache Regular 1 1 United States California NGS Datasheet <h1>452.8 USGS</h1> <b> PID </b> LU1376 <br> <b> STATE/COUNTY</b> CA/HUMBOLDT <br> <b> USGS QUAD </b> ALDERPOINT (1969) <br> <p> <h2>Current Survey Control</h2> <hr> <b> NAD 83(1986)</b> 40 10 33. (N) 123 36 42. (W) SCALED <br> <b> NAVD 88 </b> 139.33 (+/-2cm) 457.1 (feet) VERTCON <br> <hr> <b> GEOID HEIGHT</b> -29.81 (meters) GEOID03 <br> <p> <b> VERT ORDER </b> SECOND CLASS 0 (See Below) <br> <p>The horizontal coordinates were scaled from a topographic map and have an estimated accuracy of +/- 6 seconds. <p>The NAVD 88 height was computed by applying the VERTCON shift value to the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.) The vertical order pertains to the NGVD 29 superseded value. <p>The geoid height was determined by GEOID03. <p> <table border=1><tr><td> </td><td> North </td><td> East </td><td> Units</td><td> Estimated Accuracy</td></tr><tr><td>SPC CA 1 </td><td> 594,810. </td><td> 1,862,740. </td><td> MT</td><td> (+/- 180 meters Scaled)</td></tr> </table> <p> <h2>Superseded Survey Control</h2> <p> NGVD 29 (??/??/92) 138.406 (m) 454.09 (f) ADJ UNCH 2 0 <br> <p>Superseded values are not recommended for survey control. NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums. See file dsdata.txt to determine how the superseded data were derived. <p> <h2>Marker Information</h2>U.S. NATIONAL GRID SPATIAL ADDRESS: 10TDK479474(NAD 83) <br>MARKER: Q = CHISELED SQUARE <br>SETTING: 36 = SET IN A MASSIVE STRUCTURE <br>SP_SET: BUILDING <br>STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL <br> </table> <p> <h2>History</h2><table border=1><tr><td>Date </td><td>Condition </td><td>Report By</td></tr><tr><td>UNK </td><td>MONUMENTED </td><td>USGS</td></tr><tr><td>1942 </td><td>GOOD </td><td>NGS</td></tr> </table> <p> <h2>STATION DESCRIPTION </h2> <p>DESCRIBED BY NATIONAL GEODETIC SURVEY 1942 AT ALDERPOINT. AT ALDERPOINT, HUMBOLDT COUNTY, 350 FEET NORTHWEST OF THE POST OFFICE, IN THE NORTHWEST CORNER OF A FORK IN THE ROAD LEADING NORTH TO THE NORTHWESTERN PACIFIC RAILROAD STATION, AT THE SOUTHEAST CORNER OF THE HORRELL GARAGE IN 1935, AND IN THE CENTER OF THE NORTH SIDE OF A CONCRETE VALVE BOX. A CHISELED SQUARE. LU1518 465 B http://www.geocaching.com/mark/details.asp?PID=LU1518 465 B Geocache Geocache 465 B USGS USGS Unknown Cache Regular 1 1 United States California NGS Datasheet <h1>465 B</h1> <b> PID </b> LU1518 <br> <b> STATE/COUNTY</b> CA/HUMBOLDT <br> <b> USGS QUAD </b> WILLOW CREEK (1979) <br> <p> <h2>Current Survey Control</h2> <hr> <b> NAD 83(1986)</b> 40 56 41. (N) 123 38 00. (W) SCALED <br> <b> NAVD 88 </b> 141.666 (meters) 464.78 (feet) ADJUSTED <br> <hr> <b> GEOID HEIGHT</b> -27.89 (meters) GEOID03 <br> <b> DYNAMIC HT </b> 141.597 (meters) 464.56 (feet) COMP <br> <b> MODELED GRAV</b> 980,133.2 (mgal) NAVD 88 <br> <p> <b> VERT ORDER </b> FIRST CLASS II <br> <p>The horizontal coordinates were scaled from a topographic map and have an estimated accuracy of +/- 6 seconds. <p>The orthometric height was determined by differential leveling and adjusted by the National Geodetic Survey in June 1991. <p>The geoid height was determined by GEOID03. <p>The dynamic height is computed by dividing the NAVD 88 geopotential number by the normal gravity value computed on the Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45 degrees latitude (g = 980.6199 gals.). <p>The modeled gravity was interpolated from observed gravity values. <p> <table border=1><tr><td> </td><td> North </td><td> East </td><td> Units</td><td> Estimated Accuracy</td></tr><tr><td>SPC CA 1 </td><td> 680,210. </td><td> 1,862,490. </td><td> MT</td><td> (+/- 180 meters Scaled)</td></tr> </table> <p> <h2>Superseded Survey Control</h2> <p> NGVD 29 (12/02/92) 140.637 (m) 461.41 (f) ADJUSTED 1 2 <br> <p>Superseded values are not recommended for survey control. NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums. See file dsdata.txt to determine how the superseded data were derived. <p> <h2>Marker Information</h2>U.S. NATIONAL GRID SPATIAL ADDRESS: 10TDL466328(NAD 83) <br>MARKER: DD = SURVEY DISK <br>SETTING: 80 = SET IN A BOULDER <br>SP_SET: BOULDER <br>STAMPING: 460.951 B 06 <br>MARK LOGO: USGS <br>STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO <br>STABILITY: SURFACE MOTION <br> </table> <p> <h2>History</h2><table border=1><tr><td>Date </td><td>Condition </td><td>Report By</td></tr><tr><td>UNK </td><td>MONUMENTED </td><td>USGS</td></tr><tr><td>1935 </td><td>GOOD </td><td>NGS</td></tr><tr><td>1987 </td><td>GOOD </td><td>NGS</td></tr> </table> <p> <h2>STATION DESCRIPTION </h2> <p>DESCRIBED BY NATIONAL GEODETIC SURVEY 1935 AT WILLOW CREEK. AT WILLOW CREEK, HUMBOLDT COUNTY, ON STATE HIGHWAY 96, AT HIGHWAY STATION 503+50, ABOUT 160 FEET WEST OF THE WILLOW CREEK HOTEL, 13 FEET WEST OF AN AAA SIGN HOOPA 12 MILES, 52 FEET SOUTHWEST OF THE CENTERLINE OF THE HIGHWAY, 59 FEET NORTHWEST OF A 4-FOOT FIR TREE, AND IN THE TOP OF A ROCK. A UNITED STATES GEOLOGICAL SURVEY STANDARD DISK, STAMPED 460.951 B 06. <p> <h2>STATION RECOVERY (1987) </h2> <p>RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1987 RECOVERED IN GOOD CONDITION. A NEW DESCRIPTION FOLLOWS. 0.6 KM (0.35 MI) NORTH ALONG STATE HIGHWAY 96 FROM THE JUNCTION OF STATE HIGHWAY 299 IN WILLOW CREEK, IN TOP OF THE NORTH END OF A 3 BY 6 FOOT BOULDER THAT PROJECTS 12-INCHES ABOVE THE GROUND SURFACE, 28.2 M (92.5 FT) NORTH OF THE CENTER OF BRANNAN MOUNTAIN ROAD, AND 8.0 M (26.2 FT) SOUTHWEST OF THE CENTERLINE OF THE HIGHWAY. NOTE--THE DISK HAS BEEN MUTILATED, BUT IS SOLID IN PLACE. THE MARK IS 0.5 M ABOVE THE HIGHWAY. LV0141 5 USGS http://www.geocaching.com/mark/details.asp?PID=LV0141 5 USGS Geocache Geocache 5 USGS USGS Unknown Cache Regular 1 1 United States California NGS Datasheet <h1>5 USGS</h1> <b> PID </b> LV0141 <br> <b> STATE/COUNTY</b> CA/HUMBOLDT <br> <b> USGS QUAD </b> CRANNELL (1975) <br> <p> <h2>Current Survey Control</h2> <hr> <b> NAD 83(1986)</b> 41 01 41. (N) 124 02 15. (W) SCALED <br> <b> NAVD 88 </b> 59.038 (meters) 193.69 (feet) ADJUSTED <br> <hr> <b> GEOID HEIGHT</b> -29.46 (meters) GEOID03 <br> <b> DYNAMIC HT </b> 59.012 (meters) 193.61 (feet) COMP <br> <b> MODELED GRAV</b> 980,187.6 (mgal) NAVD 88 <br> <p> <b> VERT ORDER </b> SECOND CLASS 0 <br> <p>The horizontal coordinates were scaled from a topographic map and have an estimated accuracy of +/- 6 seconds. <p>The orthometric height was determined by differential leveling and adjusted by the National Geodetic Survey in June 1991. <p>The geoid height was determined by GEOID03. <p>The dynamic height is computed by dividing the NAVD 88 geopotential number by the normal gravity value computed on the Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45 degrees latitude (g = 980.6199 gals.). <p>The modeled gravity was interpolated from observed gravity values. <p> <table border=1><tr><td> </td><td> North </td><td> East </td><td> Units</td><td> Estimated Accuracy</td></tr><tr><td>SPC CA 1 </td><td> 690,170. </td><td> 1,828,680. </td><td> MT</td><td> (+/- 180 meters Scaled)</td></tr> </table> <p> <h2>Superseded Survey Control</h2> <p> NGVD 29 (??/??/??) 58.003 (m) 190.30 (f) ADJUSTED 2 0 <br> <p>Superseded values are not recommended for survey control. NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums. See file dsdata.txt to determine how the superseded data were derived. <p> <h2>Marker Information</h2>U.S. NATIONAL GRID SPATIAL ADDRESS: 10TDL127423(NAD 83) <br>MARKER: S = SPIKE <br>SETTING: 30 = SET IN A LIGHT STRUCTURE <br>SP_SET: SPIKE IN STUMP <br>STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY <br> </table> <p> <h2>History</h2><table border=1><tr><td>Date </td><td>Condition </td><td>Report By</td></tr><tr><td>UNK </td><td>MONUMENTED </td><td>USGS</td></tr><tr><td>1945 </td><td>GOOD </td><td>NGS</td></tr> </table> <p> <h2>STATION DESCRIPTION </h2> <p>DESCRIBED BY NATIONAL GEODETIC SURVEY 1945 3.4 MI E FROM CRANNELL. 3.4 MILES EAST ALONG THE ROAD TO CAMP NO. 20 FROM CRANNELL, HUMBOLDT COUNTY, 2.6 MILES WEST OF CAMP NO. 20, 85 FEET SOUTH OF THE SOUTH END OF A COVERED WOODEN BRIDE, 18 FEET WEST OF THE CENTERLINE OF THE ROAD, NEAR A WHITE WOODEN WITNESS POST, AND IN THE 5-FOOT STUMP OF A REDWOOD TREE (THE STUMP IS MARKED 89.375). AN IRON SPIKE. MX0614 511.17 USBR http://www.geocaching.com/mark/details.asp?PID=MX0614 511.17 USBR Geocache Geocache 511.17 USBR BOR Unknown Cache Regular 1 1 United States California NGS Datasheet <h1>511.17 USBR</h1> <b> PID </b> MX0614 <br> <b> STATE/COUNTY</b> CA/HUMBOLDT <br> <b> USGS QUAD </b> WEITCHPEC (1979) <br> <p> <h2>Current Survey Control</h2> <hr> <b> NAD 83(1986)</b> 41 09 22. (N) 123 41 03. (W) SCALED <br> <b> NAVD 88 </b> 156.77 (+/-2cm) 514.3 (feet) VERTCON <br> <hr> <b> GEOID HEIGHT</b> -27.83 (meters) GEOID03 <br> <p> <b> VERT ORDER </b> ? (See Below) <br> <p>The horizontal coordinates were scaled from a topographic map and have an estimated accuracy of +/- 6 seconds. <p>The NAVD 88 height was computed by applying the VERTCON shift value to the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.) The vertical order pertains to the NGVD 29 superseded value. <p>The geoid height was determined by GEOID03. <p> <table border=1><tr><td> </td><td> North </td><td> East </td><td> Units</td><td> Estimated Accuracy</td></tr><tr><td>SPC CA 1 </td><td> 703,760. </td><td> 1,858,660. </td><td> MT</td><td> (+/- 180 meters Scaled)</td></tr> </table> <p> <h2>Superseded Survey Control</h2> <p> NGVD 29 (??/??/??) 155.748 (m) 510.98 (f) ADJUSTED ? <br> <p>Superseded values are not recommended for survey control. NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums. See file dsdata.txt to determine how the superseded data were derived. <p> <h2>Marker Information</h2>U.S. NATIONAL GRID SPATIAL ADDRESS: 10TDL425563(NAD 83) <br>MARKER: N = NAIL <br>SETTING: 30 = SET IN A LIGHT STRUCTURE <br>SP_SET: TREE <br>STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY <br> </table> <p> <h2>History</h2><table border=1><tr><td>Date </td><td>Condition </td><td>Report By</td></tr><tr><td>UNK </td><td>MONUMENTED </td><td>BOR</td></tr><tr><td>1932 </td><td>GOOD </td><td>NGS</td></tr><tr><td>1935 </td><td>MARK NOT FOUND </td><td>NGS</td></tr> </table> <p> <h2>STATION DESCRIPTION </h2> <p>DESCRIBED BY NATIONAL GEODETIC SURVEY 1932 3.4 MI S FROM WEITCHPEC. 3.4 MILES SOUTH ALONG STATE HIGHWAY 96 FROM WEITCHPEC, HUMBOLDT COUNTY, AT HIGHWAY STATION 262+25 ON THE OLD ROUTE OF THE HIGHWAY, AND 25 FEET NORTH OF THE CENTERLINE OF THE OLD HIGHWAY. A NAIL IN THE TRUNK OF A 12-INCH MADRONA TREE. <p> <h2>STATION RECOVERY (1935) </h2> <p>RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1935 MARK NOT FOUND. MX0657 513 USGS http://www.geocaching.com/mark/details.asp?PID=MX0657 513 USGS Geocache Geocache 513 USGS USGS Unknown Cache Regular 1 1 United States California NGS Datasheet <h1>513 USGS</h1> <b> PID </b> MX0657 <br> <b> STATE/COUNTY</b> CA/HUMBOLDT <br> <b> USGS QUAD </b> WEITCHPEC (1979) <br> <p> <h2>Current Survey Control</h2> <hr> <b> NAD 83(1986)</b> 41 12 10. (N) 123 45 02. (W) SCALED <br> <b> NAVD 88 </b> 157.472 (meters) 516.64 (feet) POSTED <br> <hr> <b> GEOID HEIGHT</b> -28.05 (meters) GEOID03 <br> <b> DYNAMIC HT </b> 157.400 (meters) 516.40 (feet) COMP <br> <b> MODELED GRAV</b> 980,146.0 (mgal) NAVD 88 <br> <p> <b> VERT ORDER </b> * POSTED, Code F , SEE BELOW <br> <p>The horizontal coordinates were scaled from a topographic map and have an estimated accuracy of +/- 6 seconds. <p>The orthometric height was determined by differential leveling and adjusted by the National Geodetic Survey in 1992. * This is a POSTED BENCH MARK height. Code F indicates a distribution rate greater than 8.0 mm/km. <p>The geoid height was determined by GEOID03. <p>The dynamic height is computed by dividing the NAVD 88 geopotential number by the normal gravity value computed on the Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45 degrees latitude (g = 980.6199 gals.). <p>The modeled gravity was interpolated from observed gravity values. <p> <table border=1><tr><td> </td><td> North </td><td> East </td><td> Units</td><td> Estimated Accuracy</td></tr><tr><td>SPC CA 1 </td><td> 709,050. </td><td> 1,853,190. </td><td> MT</td><td> (+/- 180 meters Scaled)</td></tr> </table> <p> <h2>Superseded Survey Control</h2> <p> NGVD 29 (??/??/92) 156.45 (m) 513.3 (f) COMPUTED 2 0 <br> <p>Superseded values are not recommended for survey control. NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums. See file dsdata.txt to determine how the superseded data were derived. <p> <h2>Marker Information</h2>U.S. NATIONAL GRID SPATIAL ADDRESS: 10TDL370615(NAD 83) <br>MARKER: N = NAIL <br>SETTING: 30 = SET IN A LIGHT STRUCTURE <br>SP_SET: TREE <br>STAMPING: USGS BM 513 1942 <br>STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY <br> </table> <p> <h2>History</h2><table border=1><tr><td>Date </td><td>Condition </td><td>Report By</td></tr><tr><td>1942 </td><td>MONUMENTED </td><td>USGS</td></tr><tr><td>1942 </td><td>GOOD </td><td>NGS</td></tr><tr><td>1942 </td><td>MARK NOT FOUND </td><td>NGS</td></tr><tr><td>19740709</td><td>MARK NOT FOUND </td><td>USPSQD</td></tr> </table> <p> <h2>STATION DESCRIPTION </h2> <p>DESCRIBED BY NATIONAL GEODETIC SURVEY 1942 2.6 MI W FROM WEITCHPEC. 2.6 MILES WEST ALONG THE ORICK ROAD FROM WEITCHPEC, HUMBOLDT COUNTY, 7 FEET SOUTH OF THE CENTERLINE OF THE ROAD, IN A NOTCH AT THE NORTH SIDE OF A 30-INCH OAK TREE, AND ABOUT ONE FOOT HIGHER THAN THE ROAD. A UNITED STATES GEOLOGICAL SURVEY STANDARD COPPER NAIL AND WASHER, STAMPED USGS BM. <p> <h2>STATION RECOVERY (1942) </h2> <p>RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1942 MARK NOT FOUND. <p> <h2>STATION RECOVERY (1974) </h2> <p>RECOVERY NOTE BY US POWER SQUADRON 1974 (WFM) MARK NOT FOUND. LV0285 60 http://www.geocaching.com/mark/details.asp?PID=LV0285 60 Geocache Geocache 60 CA1220 CA1220 Unknown Cache Regular 1 1 United States California NGS Datasheet <h1>60</h1> <b> PID </b> LV0285 <br> <b> STATE/COUNTY</b> CA/HUMBOLDT <br> <b> USGS QUAD </b> EUREKA (1972) <br> <p> <h2>Current Survey Control</h2> <hr> <b> NAD 83(1986)</b> 40 48 16. (N) 124 08 52. (W) SCALED <br> <b> NAVD 88 </b> 6.641 (meters) 21.79 (feet) ADJUSTED <br> <hr> <b> GEOID HEIGHT</b> -30.44 (meters) GEOID03 <br> <b> DYNAMIC HT </b> 6.638 (meters) 21.78 (feet) COMP <br> <b> MODELED GRAV</b> 980,206.4 (mgal) NAVD 88 <br> <p> <b> VERT ORDER </b> FIRST CLASS II <br> <p>The horizontal coordinates were scaled from a topographic map and have an estimated accuracy of +/- 6 seconds. <p>The orthometric height was determined by differential leveling and adjusted by the National Geodetic Survey in June 1991. <p>The geoid height was determined by GEOID03. <p>The dynamic height is computed by dividing the NAVD 88 geopotential number by the normal gravity value computed on the Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45 degrees latitude (g = 980.6199 gals.). <p>The modeled gravity was interpolated from observed gravity values. <p> <table border=1><tr><td> </td><td> North </td><td> East </td><td> Units</td><td> Estimated Accuracy</td></tr><tr><td>SPC CA 1 </td><td> 665,570. </td><td> 1,818,800. </td><td> MT</td><td> (+/- 180 meters Scaled)</td></tr> </table> <p> <h2>Superseded Survey Control</h2> <p> NGVD 29 (12/02/92) 5.630 (m) 18.47 (f) ADJUSTED 1 2 <br> <p>Superseded values are not recommended for survey control. NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums. See file dsdata.txt to determine how the superseded data were derived. <p> <h2>Marker Information</h2>U.S. NATIONAL GRID SPATIAL ADDRESS: 10TDL031176(NAD 83) <br>MARKER: B = BOLT <br>SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT <br>SP_SET: CONCRETE POST <br>MARK LOGO: CA1220 <br>STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO <br>STABILITY: SURFACE MOTION <br> </table> <p> <h2>History</h2><table border=1><tr><td>Date </td><td>Condition </td><td>Report By</td></tr><tr><td>UNK </td><td>MONUMENTED </td><td>CA1220</td></tr><tr><td>19511101</td><td>MARK NOT FOUND </td><td>USPSQD</td></tr><tr><td>1967 </td><td>GOOD </td><td>NGS</td></tr><tr><td>1971 </td><td>GOOD </td><td>NGS</td></tr><tr><td>19880221</td><td>GOOD </td><td>NGS</td></tr> </table> <p> <h2>STATION DESCRIPTION </h2> <p>DESCRIBED BY US POWER SQUADRON 1951 (WBJ) MARK NOT FOUND. <p> <h2>STATION RECOVERY (1967) </h2> <p>RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1967 AT EUREKA. AT EUREKA, IN THE CENTER OF THE INTERSECTION OF 4TH STREET (U.S. HIGHWAY 101) AND W STREET, AND IN THE TOP OF A CONCRETE POST ABOUT 1/2 FOOT UNDER GROUND. ACCESS TO THE MARK IS THRU THE REMOVAL OF A MAN HOLE COVER. <p> <h2>STATION RECOVERY (1971) </h2> <p>RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1971 RECOVERED IN GOOD CONDITION. <p> <h2>STATION RECOVERY (1988) </h2> <p>RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1988 RECOVERED IN GOOD CONDITION. LV0283 63 http://www.geocaching.com/mark/details.asp?PID=LV0283 63 Geocache Geocache 63 CA1220 CA1220 Unknown Cache Regular 1 1 United States California NGS Datasheet <h1>63</h1> <b> PID </b> LV0283 <br> <b> STATE/COUNTY</b> CA/HUMBOLDT <br> <b> USGS QUAD </b> EUREKA (1972) <br> <p> <h2>Current Survey Control</h2> <hr> <b> NAD 83(1986)</b> 40 48 16. (N) 124 09 16. (W) SCALED <br> <b> NAVD 88 </b> 12.026 (meters) 39.46 (feet) ADJUSTED <br> <hr> <b> GEOID HEIGHT</b> -30.46 (meters) GEOID03 <br> <b> DYNAMIC HT </b> 12.021 (meters) 39.44 (feet) COMP <br> <b> MODELED GRAV</b> 980,206.8 (mgal) NAVD 88 <br> <p> <b> VERT ORDER </b> FIRST CLASS II <br> <p>The horizontal coordinates were scaled from a topographic map and have an estimated accuracy of +/- 6 seconds. <p>The orthometric height was determined by differential leveling and adjusted by the National Geodetic Survey in June 1991. <p>The geoid height was determined by GEOID03. <p>The dynamic height is computed by dividing the NAVD 88 geopotential number by the normal gravity value computed on the Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45 degrees latitude (g = 980.6199 gals.). <p>The modeled gravity was interpolated from observed gravity values. <p> <table border=1><tr><td> </td><td> North </td><td> East </td><td> Units</td><td> Estimated Accuracy</td></tr><tr><td>SPC CA 1 </td><td> 665,580. </td><td> 1,818,240. </td><td> MT</td><td> (+/- 180 meters Scaled)</td></tr> </table> <p> <h2>Superseded Survey Control</h2> <p> NGVD 29 (12/02/92) 11.015 (m) 36.14 (f) ADJUSTED 1 2 <br> <p>Superseded values are not recommended for survey control. NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums. See file dsdata.txt to determine how the superseded data were derived. <p> <h2>Marker Information</h2>U.S. NATIONAL GRID SPATIAL ADDRESS: 10TDL026176(NAD 83) <br>MARKER: B = BOLT <br>SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT <br>SP_SET: SQUARE CONCRETE MONUMENT <br>MARK LOGO: CA1220 <br>STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO <br>STABILITY: SURFACE MOTION <br> </table> <p> <h2>History</h2><table border=1><tr><td>Date </td><td>Condition </td><td>Report By</td></tr><tr><td>UNK </td><td>MONUMENTED </td><td>CA1220</td></tr><tr><td>1967 </td><td>GOOD </td><td>NGS</td></tr><tr><td>1971 </td><td>GOOD </td><td>NGS</td></tr><tr><td>19880221</td><td>GOOD </td><td>NGS</td></tr> </table> <p> <h2>STATION DESCRIPTION </h2> <p>DESCRIBED BY NATIONAL GEODETIC SURVEY 1967 AT EUREKA. AT EUREKA, IN THE CENTER OF THE INTERSECTION OF 4TH STREET (U.S. HIGHWAY 101) AND Q STREET, AND IN THE TOP OF A CONCRETE POST ABOUT 1/2 FOOT UNDER GROUND. ACCESS TO THE MARK IS THRU THE REMOVAL OF A MAN HOLE COVER. <p> <h2>STATION RECOVERY (1971) </h2> <p>RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1971 RECOVERED IN GOOD CONDITION. <p> <h2>STATION RECOVERY (1988) </h2> <p>RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1988 RECOVERED IN GOOD CONDITION. LU1513 646 B http://www.geocaching.com/mark/details.asp?PID=LU1513 646 B Geocache Geocache 646 B USGS Unknown Cache Regular 1 1 United States California NGS Datasheet <h1>646 B</h1> <b> PID </b> LU1513 <br> <b> STATE/COUNTY</b> CA/HUMBOLDT <br> <b> USGS QUAD </b> SALYER (1979) <br> <p> <h2>Current Survey Control</h2> <hr> <b> NAD 83(1986)</b> 40 55 07. (N) 123 37 15. (W) SCALED <br> <b> NAVD 88 </b> 197.787 (meters) 648.91 (feet) ADJUSTED <br> <hr> <b> GEOID HEIGHT</b> -27.86 (meters) GEOID03 <br> <b> DYNAMIC HT </b> 197.687 (meters) 648.58 (feet) COMP <br> <b> MODELED GRAV</b> 980,117.9 (mgal) NAVD 88 <br> <p> <b> VERT ORDER </b> FIRST CLASS II <br> <p>The horizontal coordinates were scaled from a topographic map and have an estimated accuracy of +/- 6 seconds. <p>The orthometric height was determined by differential leveling and adjusted by the National Geodetic Survey in June 1991. <p>The geoid height was determined by GEOID03. <p>The dynamic height is computed by dividing the NAVD 88 geopotential number by the normal gravity value computed on the Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45 degrees latitude (g = 980.6199 gals.). <p>The modeled gravity was interpolated from observed gravity values. <p> <table border=1><tr><td> </td><td> North </td><td> East </td><td> Units</td><td> Estimated Accuracy</td></tr><tr><td>SPC CA 1 </td><td> 677,290. </td><td> 1,863,490. </td><td> MT</td><td> (+/- 180 meters Scaled)</td></tr> </table> <p> <h2>Superseded Survey Control</h2> <p> NGVD 29 (??/??/92) 196.756 (m) 645.52 (f) ADJ UNCH 1 2 <br> <p>Superseded values are not recommended for survey control. NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums. See file dsdata.txt to determine how the superseded data were derived. <p> <h2>Marker Information</h2>U.S. NATIONAL GRID SPATIAL ADDRESS: 10TDL477299(NAD 83) <br>MARKER: DD = SURVEY DISK <br>SETTING: 80 = SET IN A BOULDER <br>STAMPING: 645.064 B 1906 <br>STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO <br>STABILITY: SURFACE MOTION <br> </table> <p> <h2>History</h2><table border=1><tr><td>Date </td><td>Condition </td><td>Report By</td></tr><tr><td>1906 </td><td>MONUMENTED </td><td>USGS</td></tr><tr><td>1935 </td><td>GOOD </td><td>NGS</td></tr><tr><td>1988 </td><td>MARK NOT FOUND </td><td>NGS</td></tr> </table> <p> <h2>STATION DESCRIPTION </h2> <p>DESCRIBED BY NATIONAL GEODETIC SURVEY 1935 1.5 MI SE FROM WILLOW CREEK. 1.5 MILES SOUTHEAST ALONG U.S. HIGHWAY 299 FROM WILLOW CREEK, HUMBOLDT COUNTY, AT CHINA FLAT, 600 FEET EAST OF GAMBLES AUTO CAMP IN 1931, 300 FEET SOUTH OF THE NEW HIGHWAY, AND IN THE TOP OF A LARGE BOULDER. A UNITED STATES GEOLOGICAL SURVEY STANDARD DISK, STAMPED 645.064 B 1906. <p> <h2>STATION RECOVERY (1988) </h2> <p>RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1988 MARK NOT FOUND. LU1520 656.07 USBPR http://www.geocaching.com/mark/details.asp?PID=LU1520 656.07 USBPR Geocache Geocache 656.07 USBPR BPR Unknown Cache Regular 1 1 United States California NGS Datasheet <h1>656.07 USBPR</h1> <b> PID </b> LU1520 <br> <b> STATE/COUNTY</b> CA/HUMBOLDT <br> <b> USGS QUAD </b> WILLOW CREEK (1979) <br> <p> <h2>Current Survey Control</h2> <hr> <b> NAD 83(1986)</b> 40 59 41. (N) 123 37 46. (W) SCALED <br> <b> NAVD 88 </b> 187.136 (meters) 613.96 (feet) ADJUSTED <br> <hr> <b> GEOID HEIGHT</b> -27.81 (meters) GEOID03 <br> <b> DYNAMIC HT </b> 187.042 (meters) 613.65 (feet) COMP <br> <b> MODELED GRAV</b> 980,116.5 (mgal) NAVD 88 <br> <p> <b> VERT ORDER </b> SECOND CLASS 0 <br> <p>The horizontal coordinates were scaled from a topographic map and have an estimated accuracy of +/- 6 seconds. <p>The orthometric height was determined by differential leveling and adjusted by the National Geodetic Survey in June 1991. <p>The geoid height was determined by GEOID03. <p>The dynamic height is computed by dividing the NAVD 88 geopotential number by the normal gravity value computed on the Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45 degrees latitude (g = 980.6199 gals.). <p>The modeled gravity was interpolated from observed gravity values. <p> <table border=1><tr><td> </td><td> North </td><td> East </td><td> Units</td><td> Estimated Accuracy</td></tr><tr><td>SPC CA 1 </td><td> 685,750. </td><td> 1,862,920. </td><td> MT</td><td> (+/- 180 meters Scaled)</td></tr> </table> <p> <h2>Superseded Survey Control</h2> <p> NGVD 29 (??/??/92) 186.104 (m) 610.58 (f) ADJ UNCH 2 0 <br> <p>Superseded values are not recommended for survey control. NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums. See file dsdata.txt to determine how the superseded data were derived. <p> <h2>Marker Information</h2>U.S. NATIONAL GRID SPATIAL ADDRESS: 10TDL470383(NAD 83) <br>MARKER: N = NAIL <br>SETTING: 30 = SET IN A LIGHT STRUCTURE <br>SP_SET: TREE <br>STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY <br> </table> <p> <h2>History</h2><table border=1><tr><td>Date </td><td>Condition </td><td>Report By</td></tr><tr><td>UNK </td><td>MONUMENTED </td><td>BPR</td></tr><tr><td>1931 </td><td>GOOD </td><td>NGS</td></tr><tr><td>1935 </td><td>MARK NOT FOUND </td><td>NGS</td></tr> </table> <p> <h2>STATION DESCRIPTION </h2> <p>DESCRIBED BY NATIONAL GEODETIC SURVEY 1931 4 MI N FROM WILLOW CREEK. 4.0 MILES NORTH ALONG STATE HIGHWAY 96 FROM WILLOW CREEK, HUMBOLDT COUNTY, AT HIGHWAY STATION 280+50 ON THE OLD ROUTE OF THE HIGHWAY, AND 20 FEET NORTH OF THE CENTERLINE OF THE OLD HIGHWAY. A NAIL IN A 6-INCH FIR TREE. <p> <h2>STATION RECOVERY (1935) </h2> <p>RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1935 MARK NOT FOUND. LV0278 68 http://www.geocaching.com/mark/details.asp?PID=LV0278 68 Geocache Geocache 68 CA1220 Unknown Cache Regular 1 1 United States California NGS Datasheet <h1>68</h1> <b> PID </b> LV0278 <br> <b> STATE/COUNTY</b> CA/HUMBOLDT <br> <b> USGS QUAD </b> EUREKA (1972) <br> <p> <h2>Current Survey Control</h2> <hr> <b> NAD 83(1986)</b> 40 48 05. (N) 124 10 29. (W) SCALED <br> <b> NAVD 88 </b> 3.01 (+/-2cm) 9.9 (feet) VERTCON <br> <hr> <b> GEOID HEIGHT</b> -30.55 (meters) GEOID03 <br> <p> <b> VERT ORDER </b> FIRST CLASS II (See Below) <br> <p>The horizontal coordinates were scaled from a topographic map and have an estimated accuracy of +/- 6 seconds. <p>The NAVD 88 height was computed by applying the VERTCON shift value to the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.) The vertical order pertains to the NGVD 29 superseded value. <p>The geoid height was determined by GEOID03. <p> <table border=1><tr><td> </td><td> North </td><td> East </td><td> Units</td><td> Estimated Accuracy</td></tr><tr><td>SPC CA 1 </td><td> 665,290. </td><td> 1,816,520. </td><td> MT</td><td> (+/- 180 meters Scaled)</td></tr> </table> <p> <h2>Superseded Survey Control</h2> <p> NGVD 29 (??/??/??) 1.994 (m) 6.54 (f) ADJUSTED 1 2 <br> <p>Superseded values are not recommended for survey control. NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums. See file dsdata.txt to determine how the superseded data were derived. <p> <h2>Marker Information</h2>U.S. NATIONAL GRID SPATIAL ADDRESS: 10TDL009173(NAD 83) <br>MARKER: B = BOLT <br>SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT <br>SP_SET: SET IN TOP OF CONCRETE MONUMENT <br>STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO <br>STABILITY: SURFACE MOTION <br> </table> <p> <h2>History</h2><table border=1><tr><td>Date </td><td>Condition </td><td>Report By</td></tr><tr><td>UNK </td><td>MONUMENTED </td><td>CA1220</td></tr><tr><td>1967 </td><td>GOOD </td><td>NGS</td></tr><tr><td>1971 </td><td>GOOD</td><td>NGS</td></tr><tr><td>19880418</td><td>MARK NOT FOUND </td><td>NGS</td></tr> </table> <p> <h2>STATION DESCRIPTION </h2> <p>DESCRIBED BY NATIONAL GEODETIC SURVEY 1967 AT EUREKA. AT EUREKA, AT THE CENTER OF THE INTERSECTION OF U.S. HIGHWAY 101 (BROADWAY) AND 4TH STREET, 3.3 FEET SOUTHEAST OF THE SOUTHEAST EDGE OF A CONCRETE CURB OF AN ISLAND, AND IN THE TOP OF A CONCRETE POST ABOUT 1/2 FOOT UNDER GROUND. ACCESS TO THE MARK IS THRU THE REMOVAL OF A MAN HOLE COVER. <p> <h2>STATION RECOVERY (1971) </h2> <p>RECOVERED 1971 RECOVERED IN GOOD CONDITION. <p> <h2>STATION RECOVERY (1988) </h2> <p>RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1988 THERE HAS BEEN ROAD CONSTRUCTION AT THIS LOCATION. LU1461 69 RS USGS http://www.geocaching.com/mark/details.asp?PID=LU1461 69 RS USGS Geocache Geocache 69 RS USGS USGS Unknown Cache Regular 1 1 United States California NGS Datasheet <h1>69 RS USGS</h1> <b> PID </b> LU1461 <br> <b> STATE/COUNTY</b> CA/HUMBOLDT <br> <b> USGS QUAD </b> DINSMORE (1977) <br> <p> <h2>Current Survey Control</h2> <hr> <b> NAD 83(1986)</b> 40 28 02. (N) 123 32 44. (W) SCALED <br> <b> NAVD 88 </b> 758.68 (+/-2cm) 2489.1 (feet) VERTCON <br> <hr> <b> GEOID HEIGHT</b> -28.43 (meters) GEOID03 <br> <p> <b> VERT ORDER </b> SECOND CLASS 0 (See Below) <br> <p>The horizontal coordinates were scaled from a topographic map and have an estimated accuracy of +/- 6 seconds. <p>The NAVD 88 height was computed by applying the VERTCON shift value to the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.) The vertical order pertains to the NGVD 29 superseded value. <p>The geoid height was determined by GEOID03. <p> <table border=1><tr><td> </td><td> North </td><td> East </td><td> Units</td><td> Estimated Accuracy</td></tr><tr><td>SPC CA 1 </td><td> 627,060. </td><td> 1,868,940. </td><td> MT</td><td> (+/- 180 meters Scaled)</td></tr> </table> <p> <h2>Superseded Survey Control</h2> <p> NGVD 29 (??/??/92) 757.683 (m) 2485.83 (f) ADJ UNCH 2 0 <br> <p>Superseded values are not recommended for survey control. NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums. See file dsdata.txt to determine how the superseded data were derived. <p> <h2>Marker Information</h2>U.S. NATIONAL GRID SPATIAL ADDRESS: 10TDK537797(NAD 83) <br>MARKER: DD = SURVEY DISK <br>SETTING: 66 = SET IN ROCK OUTCROP <br>SP_SET: ROCK OUTCROP <br>STAMPING: 2486 69 RS 1932 <br>STABILITY: A = MOST RELIABLE AND EXPECTED TO HOLD <br>STABILITY: POSITION/ELEVATION WELL <br> </table> <p> <h2>History</h2><table border=1><tr><td>Date </td><td>Condition </td><td>Report By</td></tr><tr><td>1932 </td><td>MONUMENTED </td><td>USGS</td></tr><tr><td>1949 </td><td>GOOD </td><td>NGS</td></tr><tr><td>1973 </td><td>GOOD</td><td>NGS</td></tr> </table> <p> <h2>STATION DESCRIPTION </h2> <p>DESCRIBED BY NATIONAL GEODETIC SURVEY 1949 1.6 MI NW FROM MAD RIVER R.S.. 1.6 MILES NORTHWEST ALONG STATE HIGHWAY 36 FROM THE MAD RIVER RANGER STATION, ON THE SOUTH SIDE OF A HILL, ABOUT 16 FEET WEST OF THE HUMBOLDT-TRINITY COUNTY LINE, IN THE TOP OF A ROCK OUTCROP MARKED BY THE WHITE PAINTED LETTERS BM, 62 FEET NORTH OF THE CENTERLINE OF THE HIGHWAY, 22 1/2 FEET SOUTH OF A MASSIVE ROCK OUTCROP, AND ABOUT 15 FEET HIGHER THAN THE HIGHWAY. <p> <h2>STATION RECOVERY (1973) </h2> <p>RECOVERED 1973 RECOVERED IN GOOD CONDITION. MX0633 698 USGS http://www.geocaching.com/mark/details.asp?PID=MX0633 698 USGS Geocache Geocache 698 USGS CGS Unknown Cache Regular 1 1 United States California NGS Datasheet <h1>698 USGS</h1> <b> PID </b> MX0633 <br> <b> STATE/COUNTY</b> CA/HUMBOLDT <br> <b> USGS QUAD </b> ORLEANS (1978) <br> <p> <h2>Current Survey Control</h2> <hr> <b> NAD 83(1986)</b> 41 16 44. (N) 123 35 15. (W) SCALED <br> <b> NAVD 88 </b> 183.470 (meters) 601.93 (feet) ADJUSTED <br> <hr> <b> GEOID HEIGHT</b> -27.30 (meters) GEOID03 <br> <b> DYNAMIC HT </b> 183.376 (meters) 601.63 (feet) COMP <br> <b> MODELED GRAV</b> 980,110.6 (mgal) NAVD 88 <br> <p> <b> VERT ORDER </b> SECOND CLASS 0 <br> <p>The horizontal coordinates were scaled from a topographic map and have an estimated accuracy of +/- 6 seconds. <p>The orthometric height was determined by differential leveling and adjusted by the National Geodetic Survey in June 1991. <p>The geoid height was determined by GEOID03. <p>The dynamic height is computed by dividing the NAVD 88 geopotential number by the normal gravity value computed on the Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45 degrees latitude (g = 980.6199 gals.). <p>The modeled gravity was interpolated from observed gravity values. <p> <table border=1><tr><td> </td><td> North </td><td> East </td><td> Units</td><td> Estimated Accuracy</td></tr><tr><td>SPC CA 1 </td><td> 717,240. </td><td> 1,867,020. </td><td> MT</td><td> (+/- 180 meters Scaled)</td></tr> </table> <p> <h2>Superseded Survey Control</h2> <p> NGVD 29 (??/??/??) 182.465 (m) 598.64 (f) ADJUSTED 2 0 <br> <p>Superseded values are not recommended for survey control. NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums. See file dsdata.txt to determine how the superseded data were derived. <p> <h2>Marker Information</h2>U.S. NATIONAL GRID SPATIAL ADDRESS: 10TDL507698(NAD 83) <br>MARKER: N = NAIL <br>SETTING: 30 = SET IN A LIGHT STRUCTURE <br>SP_SET: TREE <br>STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY <br> </table> <p> <h2>History</h2><table border=1><tr><td>Date </td><td>Condition </td><td>Report By</td></tr><tr><td>UNK </td><td>MONUMENTED </td><td>CGS</td></tr><tr><td>1949 </td><td>GOOD </td><td>NGS</td></tr> </table> <p> <h2>STATION DESCRIPTION </h2> <p>DESCRIBED BY NATIONAL GEODETIC SURVEY 1949 3.6 MI SW FROM ORLEANS. 3.6 MILES SOUTHWEST ALONG STATE HIGHWAY 96 FROM THE POST OFFICE AT ORLEANS, ON THE OUTSIDE OF A CURVE, 76 FEET NORTHEAST OF THE JUNCTION OF CEDAR CAMP ROAD, 27 1/2 FEET SOUTH OF THE CENTER LINE OF THE HIGHWAY, ABOUT LEVEL WITH THE HIGHWAY, DRIVEN IN A ROOT ON THE NORTH SIDE OF A 22-INCH MADRONA TREE, AND MARKED BY THE WHITE PAINTED LETTERS UE1 698. LU1458 70 RS USGS http://www.geocaching.com/mark/details.asp?PID=LU1458 70 RS USGS Geocache Geocache 70 RS USGS USGS Unknown Cache Regular 1 1 United States California NGS Datasheet <h1>70 RS USGS</h1> <b> PID </b> LU1458 <br> <b> STATE/COUNTY</b> CA/HUMBOLDT <br> <b> USGS QUAD </b> DINSMORE (1977) <br> <p> <h2>Current Survey Control</h2> <hr> <b> NAD 83(1986)</b> 40 28 54. (N) 123 34 29. (W) SCALED <br> <b> NAVD 88 </b> 738.12 (+/-2cm) 2421.6 (feet) VERTCON <br> <hr> <b> GEOID HEIGHT</b> -28.51 (meters) GEOID03 <br> <p> <b> VERT ORDER </b> SECOND CLASS 0 (See Below) <br> <p>The horizontal coordinates were scaled from a topographic map and have an estimated accuracy of +/- 6 seconds. <p>The NAVD 88 height was computed by applying the VERTCON shift value to the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.) The vertical order pertains to the NGVD 29 superseded value. <p>The geoid height was determined by GEOID03. <p> <table border=1><tr><td> </td><td> North </td><td> East </td><td> Units</td><td> Estimated Accuracy</td></tr><tr><td>SPC CA 1 </td><td> 628,710. </td><td> 1,866,500. </td><td> MT</td><td> (+/- 180 meters Scaled)</td></tr> </table> <p> <h2>Superseded Survey Control</h2> <p> NGVD 29 (??/??/92) 737.127 (m) 2418.39 (f) ADJ UNCH 2 0 <br> <p>Superseded values are not recommended for survey control. NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums. See file dsdata.txt to determine how the superseded data were derived. <p> <h2>Marker Information</h2>U.S. NATIONAL GRID SPATIAL ADDRESS: 10TDK512813(NAD 83) <br>MARKER: DD = SURVEY DISK <br>SETTING: 80 = SET IN A BOULDER <br>STAMPING: 2419 70 RS 1932 <br>STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO <br>STABILITY: SURFACE MOTION <br> </table> <p> <h2>History</h2><table border=1><tr><td>Date </td><td>Condition </td><td>Report By</td></tr><tr><td>1932 </td><td>MONUMENTED </td><td>USGS</td></tr><tr><td>1949 </td><td>GOOD </td><td>NGS</td></tr> </table> <p> <h2>STATION DESCRIPTION </h2> <p>DESCRIBED BY NATIONAL GEODETIC SURVEY 1949 3.6 MI NW FROM MAD RIVER R.S.. 3.6 MILES NORTHWEST ALONG STATE HIGHWAY 36 FROM THE MAD RIVER RANGER STATION, 0.3 MILE NORTHWEST OF COBBS STORE, IN THE TOP OF A SMALL BOULDER, 33 FEET NORTHEAST OF THE CENTERLINE OF THE HIGHWAY, 8 1/2 FEET NORTH OF A 36-INCH FIR TREE MARKED BY THE WHITE PAINTED LETTERS BM, AND ABOUT 4 FEET HIGHER THAN THE HIGHWAY. LU1454 71 RS USGS http://www.geocaching.com/mark/details.asp?PID=LU1454 71 RS USGS Geocache Geocache 71 RS USGS USGS Unknown Cache Regular 1 1 United States California NGS Datasheet <h1>71 RS USGS</h1> <b> PID </b> LU1454 <br> <b> STATE/COUNTY</b> CA/HUMBOLDT <br> <b> USGS QUAD </b> DINSMORE (1977) <br> <p> <h2>Current Survey Control</h2> <hr> <b> NAD 83(1986)</b> 40 29 35. (N) 123 36 21. (W) SCALED <br> <b> NAVD 88 </b> 732.77 (+/-2cm) 2404.1 (feet) VERTCON <br> <hr> <b> GEOID HEIGHT</b> -28.61 (meters) GEOID03 <br> <p> <b> VERT ORDER </b> SECOND CLASS 0 (See Below) <br> <p>The horizontal coordinates were scaled from a topographic map and have an estimated accuracy of +/- 6 seconds. <p>The NAVD 88 height was computed by applying the VERTCON shift value to the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.) The vertical order pertains to the NGVD 29 superseded value. <p>The geoid height was determined by GEOID03. <p> <table border=1><tr><td> </td><td> North </td><td> East </td><td> Units</td><td> Estimated Accuracy</td></tr><tr><td>SPC CA 1 </td><td> 630,020. </td><td> 1,863,880. </td><td> MT</td><td> (+/- 180 meters Scaled)</td></tr> </table> <p> <h2>Superseded Survey Control</h2> <p> NGVD 29 (??/??/92) 731.781 (m) 2400.85 (f) ADJ UNCH 2 0 <br> <p>Superseded values are not recommended for survey control. NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums. See file dsdata.txt to determine how the superseded data were derived. <p> <h2>Marker Information</h2>U.S. NATIONAL GRID SPATIAL ADDRESS: 10TDK486826(NAD 83) <br>MARKER: DD = SURVEY DISK <br>SETTING: 66 = SET IN ROCK OUTCROP <br>SP_SET: ROCK OUTCROP <br>STAMPING: 2401 71 RS 1932 <br>STABILITY: A = MOST RELIABLE AND EXPECTED TO HOLD <br>STABILITY: POSITION/ELEVATION WELL <br> </table> <p> <h2>History</h2><table border=1><tr><td>Date </td><td>Condition </td><td>Report By</td></tr><tr><td>1932 </td><td>MONUMENTED </td><td>USGS</td></tr><tr><td>1949 </td><td>GOOD </td><td>NGS</td></tr><tr><td>1973 </td><td>GOOD</td><td>NGS</td></tr> </table> <p> <h2>STATION DESCRIPTION </h2> <p>DESCRIBED BY NATIONAL GEODETIC SURVEY 1949 5.6 MI NW FROM MAD RIVER R.S.. 5.6 MILES NORTHWEST ALONG STATE HIGHWAY 36 FROM THE MAD RIVER RANGER STATION, 148 YARDS NORTHEAST OF DINNSMORES STORE, ABOUT 58 YARDS NORTH OF AND ACROSS THE HIGHWAY FROM THE NORTHEAST CORNER OF A LARGE BARN, IN THE TOP OF A ROCK OUTCROP, 48 FEET NORTHWEST OF THE CENTERLINE OF THE HIGHWAY, 4.9 FEET NORTHWEST OF A FENCE, ABOUT 6 FEET HIGHER THAN THE HIGHWAY, AND MARKED BY THE WHITE PAINTED LETTERS BM. <p> <h2>STATION RECOVERY (1973) </h2> <p>RECOVERED 1973 RECOVERED IN GOOD CONDITION. LU1521 721.55 USBPR http://www.geocaching.com/mark/details.asp?PID=LU1521 721.55 USBPR Geocache Geocache 721.55 USBPR BPR Unknown Cache Regular 1 1 United States California NGS Datasheet <h1>721.55 USBPR</h1> <b> PID </b> LU1521 <br> <b> STATE/COUNTY</b> CA/HUMBOLDT <br> <b> USGS QUAD </b> SALYER (1979) <br> <p> <h2>Current Survey Control</h2> <hr> <b> NAD 83(1986)</b> 40 59 58. (N) 123 37 30. (W) SCALED <br> <b> NAVD 88 </b> 220.856 (meters) 724.59 (feet) ADJUSTED <br> <hr> <b> GEOID HEIGHT</b> -27.78 (meters) GEOID03 <br> <b> DYNAMIC HT </b> 220.744 (meters) 724.22 (feet) COMP <br> <b> MODELED GRAV</b> 980,113.1 (mgal) NAVD 88 <br> <p> <b> VERT ORDER </b> SECOND CLASS 0 <br> <p>The horizontal coordinates were scaled from a topographic map and have an estimated accuracy of +/- 6 seconds. <p>The orthometric height was determined by differential leveling and adjusted by the National Geodetic Survey in June 1991. <p>The geoid height was determined by GEOID03. <p>The dynamic height is computed by dividing the NAVD 88 geopotential number by the normal gravity value computed on the Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45 degrees latitude (g = 980.6199 gals.). <p>The modeled gravity was interpolated from observed gravity values. <p> <table border=1><tr><td> </td><td> North </td><td> East </td><td> Units</td><td> Estimated Accuracy</td></tr><tr><td>SPC CA 1 </td><td> 686,270. </td><td> 1,863,300. </td><td> MT</td><td> (+/- 180 meters Scaled)</td></tr> </table> <p> <h2>Superseded Survey Control</h2> <p> NGVD 29 (??/??/92) 219.823 (m) 721.20 (f) ADJ UNCH 2 0 <br> <p>Superseded values are not recommended for survey control. NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums. See file dsdata.txt to determine how the superseded data were derived. <p> <h2>Marker Information</h2>U.S. NATIONAL GRID SPATIAL ADDRESS: 10TDL474388(NAD 83) <br>MARKER: N = NAIL <br>SETTING: 30 = SET IN A LIGHT STRUCTURE <br>SP_SET: TREE <br>STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY <br> </table> <p> <h2>History</h2><table border=1><tr><td>Date </td><td>Condition </td><td>Report By</td></tr><tr><td>UNK </td><td>MONUMENTED </td><td>BPR</td></tr><tr><td>1935 </td><td>GOOD </td><td>NGS</td></tr> </table> <p> <h2>STATION DESCRIPTION </h2> <p>DESCRIBED BY NATIONAL GEODETIC SURVEY 1935 4.4 MI N FROM WILLOW CREEK. 4.4 MILES NORTH ALONG STATE HIGHWAY 96 FROM WILLOW CREEK, HUMBOLDT COUNTY, AT HIGHWAY STATION 286+00 ON THE OLD ROUTE OF THE HIGHWAY, AT THE NORTH EDGE OF THE OLD HIGHWAY, AT A FIR TREE TO WHICH IS NAILED A STAKE BEARING THE INSTRIPTION PBM 27 ELEV 271.55, AND ABOUT 3 FEET ABOVE THE GROUND. A NAIL IN A FIR TREE. LU1450 73 RS USGS http://www.geocaching.com/mark/details.asp?PID=LU1450 73 RS USGS Geocache Geocache 73 RS USGS USGS Unknown Cache Regular 1 1 United States California NGS Datasheet <h1>73 RS USGS</h1> <b> PID </b> LU1450 <br> <b> STATE/COUNTY</b> CA/HUMBOLDT <br> <b> USGS QUAD </b> LARABEE VALLEY (1977) <br> <p> <h2>Current Survey Control</h2> <hr> <b> NAD 83(1986)</b> 40 28 26. (N) 123 39 14. (W) SCALED <br> <b> NAVD 88 </b> 816.41 (+/-2cm) 2678.5 (feet) VERTCON <br> <hr> <b> GEOID HEIGHT</b> -28.88 (meters) GEOID03 <br> <p> <b> VERT ORDER </b> SECOND CLASS 0 (See Below) <br> <p>The horizontal coordinates were scaled from a topographic map and have an estimated accuracy of +/- 6 seconds. <p>The NAVD 88 height was computed by applying the VERTCON shift value to the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.) The vertical order pertains to the NGVD 29 superseded value. <p>The geoid height was determined by GEOID03. <p> <table border=1><tr><td> </td><td> North </td><td> East </td><td> Units</td><td> Estimated Accuracy</td></tr><tr><td>SPC CA 1 </td><td> 627,970. </td><td> 1,859,770. </td><td> MT</td><td> (+/- 180 meters Scaled)</td></tr> </table> <p> <h2>Superseded Survey Control</h2> <p> NGVD 29 (??/??/92) 815.409 (m) 2675.22 (f) ADJ UNCH 2 0 <br> <p>Superseded values are not recommended for survey control. NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums. See file dsdata.txt to determine how the superseded data were derived. <p> <h2>Marker Information</h2>U.S. NATIONAL GRID SPATIAL ADDRESS: 10TDK445805(NAD 83) <br>MARKER: DB = BENCH MARK DISK <br>SETTING: 66 = SET IN ROCK OUTCROP <br>SP_SET: ROCK OUTCROP <br>STAMPING: 2675 73 RS 1932 <br>STABILITY: A = MOST RELIABLE AND EXPECTED TO HOLD <br>STABILITY: POSITION/ELEVATION WELL <br> </table> <p> <h2>History</h2><table border=1><tr><td>Date </td><td>Condition </td><td>Report By</td></tr><tr><td>1932 </td><td>MONUMENTED </td><td>USGS</td></tr><tr><td>1949 </td><td>GOOD </td><td>NGS</td></tr><tr><td>1973 </td><td>GOOD</td><td>NGS</td></tr> </table> <p> <h2>STATION DESCRIPTION </h2> <p>DESCRIBED BY NATIONAL GEODETIC SURVEY 1949 9.5 MI W FROM MAD RIVER R.S.. 9.5 MILES WEST ALONG STATE HIGHWAY 36 FROM THE MAD RIVER RANGER STATION, 0.2 MILE NORTHEAST OF A POINT WHERE THE HIGHWAY PASSES BETWEEN TWO LARGE ROCK OUTCROPS, AT A WOODED PASTURE, IN THE TOP OF A ROCK OUTCROP, 57 FEET WEST OF THE CENTER LINE OF THE HIGHWAY, AND ABOUT 2 FEET LOWER THAN THE HIGHWAY. <p> <h2>STATION RECOVERY (1973) </h2> <p>RECOVERED 1973 RECOVERED IN GOOD CONDITION. LU1526 732 USGS http://www.geocaching.com/mark/details.asp?PID=LU1526 732 USGS Geocache Geocache 732 USGS USGS Unknown Cache Regular 1 1 United States California NGS Datasheet <h1>732 USGS</h1> <b> PID </b> LU1526 <br> <b> STATE/COUNTY</b> CA/HUMBOLDT <br> <b> USGS QUAD </b> LORD-ELLIS SUMMIT (1973) <br> <p> <h2>Current Survey Control</h2> <hr> <b> NAD 83(1986)</b> 40 57 35. (N) 123 50 09. (W) SCALED <br> <b> NAVD 88 </b> 225.055 (meters) 738.37 (feet) ADJUSTED <br> <hr> <b> GEOID HEIGHT</b> -28.59 (meters) GEOID03 <br> <b> DYNAMIC HT </b> 224.941 (meters) 737.99 (feet) COMP <br> <b> MODELED GRAV</b> 980,113.0 (mgal) NAVD 88 <br> <p> <b> VERT ORDER </b> SECOND CLASS 0 <br> <p>The horizontal coordinates were scaled from a topographic map and have an estimated accuracy of +/- 6 seconds. <p>The orthometric height was determined by differential leveling and adjusted by the National Geodetic Survey in June 1991. <p>The geoid height was determined by GEOID03. <p>The dynamic height is computed by dividing the NAVD 88 geopotential number by the normal gravity value computed on the Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45 degrees latitude (g = 980.6199 gals.). <p>The modeled gravity was interpolated from observed gravity values. <p> <table border=1><tr><td> </td><td> North </td><td> East </td><td> Units</td><td> Estimated Accuracy</td></tr><tr><td>SPC CA 1 </td><td> 682,210. </td><td> 1,845,480. </td><td> MT</td><td> (+/- 180 meters Scaled)</td></tr> </table> <p> <h2>Superseded Survey Control</h2> <p> NGVD 29 (??/??/92) 224.049 (m) 735.07 (f) ADJ UNCH 2 0 <br> <p>Superseded values are not recommended for survey control. NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums. See file dsdata.txt to determine how the superseded data were derived. <p> <h2>Marker Information</h2>U.S. NATIONAL GRID SPATIAL ADDRESS: 10TDL296346(NAD 83) <br>MARKER: DD = SURVEY DISK <br>SETTING: 36 = SET IN A MASSIVE STRUCTURE <br>SP_SET: BRIDGE <br>STAMPING: B 30 732 06 <br>STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL <br> </table> <p> <h2>History</h2><table border=1><tr><td>Date </td><td>Condition </td><td>Report By</td></tr><tr><td>UNK </td><td>MONUMENTED </td><td>USGS</td></tr><tr><td>1942 </td><td>GOOD </td><td>NGS</td></tr> </table> <p> <h2>STATION DESCRIPTION </h2> <p>DESCRIBED BY NATIONAL GEODETIC SURVEY 1942 14 MI NE FROM KORBEL. ABOUT 10.5 MILES EAST ALONG U.S. HIGHWAY 299 FROM KORBEL, THENCE ABOUT 3.5 MILES NORTH ALONG THE REDWOOD CREEK COUNTY ROAD, AT THE SOUTHWEST CORNER OF A BRIDGE OVER RECWOOD CREEK, IN TOP OF THE CONCRETE PILING. A UNITED STATES GEOLOGICAL SURVEY STANDARD DISK, STAMPED B 30 732 06. LU1448 74 RS USGS http://www.geocaching.com/mark/details.asp?PID=LU1448 74 RS USGS Geocache Geocache 74 RS USGS USGS Unknown Cache Regular 1 1 United States California NGS Datasheet <h1>74 RS USGS</h1> <b> PID </b> LU1448 <br> <b> STATE/COUNTY</b> CA/HUMBOLDT <br> <b> USGS QUAD </b> LARABEE VALLEY (1977) <br> <p> <h2>Current Survey Control</h2> <hr> <b> NAD 83(1986)</b> 40 27 18. (N) 123 39 07. (W) SCALED <br> <b> NAVD 88 </b> 801.76 (+/-2cm) 2630.4 (feet) VERTCON <br> <hr> <b> GEOID HEIGHT</b> -28.91 (meters) GEOID03 <br> <p> <b> VERT ORDER </b> SECOND CLASS 0 (See Below) <br> <p>The horizontal coordinates were scaled from a topographic map and have an estimated accuracy of +/- 6 seconds. <p>The NAVD 88 height was computed by applying the VERTCON shift value to the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.) The vertical order pertains to the NGVD 29 superseded value. <p>The geoid height was determined by GEOID03. <p> <table border=1><tr><td> </td><td> North </td><td> East </td><td> Units</td><td> Estimated Accuracy</td></tr><tr><td>SPC CA 1 </td><td> 625,870. </td><td> 1,859,900. </td><td> MT</td><td> (+/- 180 meters Scaled)</td></tr> </table> <p> <h2>Superseded Survey Control</h2> <p> NGVD 29 (??/??/92) 800.76 (m) 2627.2 (f) COMPUTED 2 0 <br> <p>Superseded values are not recommended for survey control. NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums. See file dsdata.txt to determine how the superseded data were derived. <p> <h2>Marker Information</h2>U.S. NATIONAL GRID SPATIAL ADDRESS: 10TDK447784(NAD 83) <br>MARKER: DD = SURVEY DISK <br>SETTING: 80 = SET IN A BOULDER <br>STAMPING: 2627 74 RS 1932 <br>STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO <br>STABILITY: SURFACE MOTION <br> </table> <p> <h2>History</h2><table border=1><tr><td>Date </td><td>Condition </td><td>Report By</td></tr><tr><td>1932 </td><td>MONUMENTED </td><td>USGS</td></tr><tr><td>1949 </td><td>GOOD </td><td>NGS</td></tr> </table> <p> <h2>STATION DESCRIPTION </h2> <p>DESCRIBED BY NATIONAL GEODETIC SURVEY 1949 11.3 MI W FROM MAD RIVER R.S.. 11.3 MILES WEST ALONG STATE HIGHWAY 36 FROM THE MAD RIVER RANGER STATION, 66 FEET EAST OF THE SCHOBER MAIL BOX, IN THE TOP OF A SMALL BOULDER, 59 1/2 FEET EAST OF THE CENTER LINE OF THE HIGHWAY, 27 FEET SOUTHEAST OF A 24-INCH FIR TREE WITH A TRIANGULAR BLAZE, 9 FEET SOUTH OF A 36-INCH FIR TREE, AND ABOUT LEVEL WITH THE HIGHWAY. LU1443 76 RS USGS http://www.geocaching.com/mark/details.asp?PID=LU1443 76 RS USGS Geocache Geocache 76 RS USGS USGS Unknown Cache Regular 1 1 United States California NGS Datasheet <h1>76 RS USGS</h1> <b> PID </b> LU1443 <br> <b> STATE/COUNTY</b> CA/HUMBOLDT <br> <b> USGS QUAD </b> LARABEE VALLEY (1977) <br> <p> <h2>Current Survey Control</h2> <hr> <b> NAD 83(1986)</b> 40 27 14. (N) 123 41 36. (W) SCALED <br> <b> NAVD 88 </b> 766.94 (+/-2cm) 2516.2 (feet) VERTCON <br> <hr> <b> GEOID HEIGHT</b> -29.12 (meters) GEOID03 <br> <p> <b> VERT ORDER </b> SECOND CLASS 0 (See Below) <br> <p>The horizontal coordinates were scaled from a topographic map and have an estimated accuracy of +/- 6 seconds. <p>The NAVD 88 height was computed by applying the VERTCON shift value to the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.) The vertical order pertains to the NGVD 29 superseded value. <p>The geoid height was determined by GEOID03. <p> <table border=1><tr><td> </td><td> North </td><td> East </td><td> Units</td><td> Estimated Accuracy</td></tr><tr><td>SPC CA 1 </td><td> 625,810. </td><td> 1,856,380. </td><td> MT</td><td> (+/- 180 meters Scaled)</td></tr> </table> <p> <h2>Superseded Survey Control</h2> <p> NGVD 29 (??/??/92) 765.943 (m) 2512.93 (f) ADJ UNCH 2 0 <br> <p>Superseded values are not recommended for survey control. NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums. See file dsdata.txt to determine how the superseded data were derived. <p> <h2>Marker Information</h2>U.S. NATIONAL GRID SPATIAL ADDRESS: 10TDK412783(NAD 83) <br>MARKER: DB = BENCH MARK DISK <br>SETTING: 80 = SET IN A BOULDER <br>STAMPING: 2514 76 RS 1932 <br>STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO <br>STABILITY: SURFACE MOTION <br> </table> <p> <h2>History</h2><table border=1><tr><td>Date </td><td>Condition </td><td>Report By</td></tr><tr><td>1932 </td><td>MONUMENTED </td><td>USGS</td></tr><tr><td>1949 </td><td>GOOD </td><td>NGS</td></tr> </table> <p> <h2>STATION DESCRIPTION </h2> <p>DESCRIBED BY NATIONAL GEODETIC SURVEY 1949 9.8 MI E FROM BRIDGEVILLE. 9.8 MILES EAST ALONG STATE HIGHWAY 36 FROM THE POST OFFICE AT BRIDGEVILLE, ON THE SOUTH SLOPE OF A HILL, AT THE NORTH END OF A TANGENT, 70 YARDS NORTH OF THE NORTH BANK OF A SMALL CREEK, IN THE TOP OF A BOULDER MARKED BY THE WHITE PAINTED LETTERS BM, 113 1/2 FEET WEST OF THE CENTERLINE OF THE HIGHWAY, AND ABOUT 12 FEET HIGHER THAN THE HIGHWAY. LU1439 77 RS USGS http://www.geocaching.com/mark/details.asp?PID=LU1439 77 RS USGS Geocache Geocache 77 RS USGS USGS Unknown Cache Regular 1 1 United States California NGS Datasheet <h1>77 RS USGS</h1> <b> PID </b> LU1439 <br> <b> STATE/COUNTY</b> CA/HUMBOLDT <br> <b> USGS QUAD </b> LARABEE VALLEY (1977) <br> <p> <h2>Current Survey Control</h2> <hr> <b> NAD 83(1986)</b> 40 28 32. (N) 123 42 36. (W) SCALED <br> <b> NAVD 88 </b> 670.17 (+/-2cm) 2198.7 (feet) VERTCON <br> <hr> <b> GEOID HEIGHT</b> -29.16 (meters) GEOID03 <br> <p> <b> VERT ORDER </b> SECOND CLASS 0 (See Below) <br> <p>The horizontal coordinates were scaled from a topographic map and have an estimated accuracy of +/- 6 seconds. <p>The NAVD 88 height was computed by applying the VERTCON shift value to the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.) The vertical order pertains to the NGVD 29 superseded value. <p>The geoid height was determined by GEOID03. <p> <table border=1><tr><td> </td><td> North </td><td> East </td><td> Units</td><td> Estimated Accuracy</td></tr><tr><td>SPC CA 1 </td><td> 628,240. </td><td> 1,855,020. </td><td> MT</td><td> (+/- 180 meters Scaled)</td></tr> </table> <p> <h2>Superseded Survey Control</h2> <p> NGVD 29 (??/??/92) 669.180 (m) 2195.47 (f) ADJ UNCH 2 0 <br> <p>Superseded values are not recommended for survey control. NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums. See file dsdata.txt to determine how the superseded data were derived. <p> <h2>Marker Information</h2>U.S. NATIONAL GRID SPATIAL ADDRESS: 10TDK398807(NAD 83) <br>MARKER: DD = SURVEY DISK <br>SETTING: 66 = SET IN ROCK OUTCROP <br>SP_SET: ROCK LEDGE <br>STAMPING: 2196 77 RS 1932 <br>STABILITY: A = MOST RELIABLE AND EXPECTED TO HOLD <br>STABILITY: POSITION/ELEVATION WELL <br> </table> <p> <h2>History</h2><table border=1><tr><td>Date </td><td>Condition </td><td>Report By</td></tr><tr><td>1932 </td><td>MONUMENTED </td><td>USGS</td></tr><tr><td>1949 </td><td>GOOD </td><td>NGS</td></tr> </table> <p> <h2>STATION DESCRIPTION </h2> <p>DESCRIBED BY NATIONAL GEODETIC SURVEY 1949 7.5 MI E FROM BRIDGEVILLE. 7.5 MILES EAST ALONG STATE HIGHWAY 36 FROM THE POST OFFICE AT BRIDGEVILLE, 0.5 MILE EAST OF A Y JUNCTION OF A DIRT ROAD LEADING TO AN OLD MILL, AT A STEEP GRADE, IN THE TOP OF A LEDGE ON THE SOUTH SIDE OF A LARGE ROCK OUTCROP, 23 1/2 FEET WEST OF THE CENTERLINE OF THE HIGHWAY, AND ABOUT 2 FEET HIGHER THAN THE HIGHWAY. LU1436 78 RS USGS http://www.geocaching.com/mark/details.asp?PID=LU1436 78 RS USGS Geocache Geocache 78 RS USGS USGS Unknown Cache Regular 1 1 United States California NGS Datasheet <h1>78 RS USGS</h1> <b> PID </b> LU1436 <br> <b> STATE/COUNTY</b> CA/HUMBOLDT <br> <b> USGS QUAD </b> LARABEE VALLEY (1977) <br> <p> <h2>Current Survey Control</h2> <hr> <b> NAD 83(1986)</b> 40 28 52. (N) 123 43 57. (W) SCALED <br> <b> NAVD 88 </b> 659.45 (+/-2cm) 2163.5 (feet) VERTCON <br> <hr> <b> GEOID HEIGHT</b> -29.27 (meters) GEOID03 <br> <p> <b> VERT ORDER </b> SECOND CLASS 0 (See Below) <br> <p>The horizontal coordinates were scaled from a topographic map and have an estimated accuracy of +/- 6 seconds. <p>The NAVD 88 height was computed by applying the VERTCON shift value to the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.) The vertical order pertains to the NGVD 29 superseded value. <p>The geoid height was determined by GEOID03. <p> <table border=1><tr><td> </td><td> North </td><td> East </td><td> Units</td><td> Estimated Accuracy</td></tr><tr><td>SPC CA 1 </td><td> 628,900. </td><td> 1,853,120. </td><td> MT</td><td> (+/- 180 meters Scaled)</td></tr> </table> <p> <h2>Superseded Survey Control</h2> <p> NGVD 29 (??/??/92) 658.466 (m) 2160.32 (f) ADJ UNCH 2 0 <br> <p>Superseded values are not recommended for survey control. NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums. See file dsdata.txt to determine how the superseded data were derived. <p> <h2>Marker Information</h2>U.S. NATIONAL GRID SPATIAL ADDRESS: 10TDK379814(NAD 83) <br>MARKER: DD = SURVEY DISK <br>SETTING: 66 = SET IN ROCK OUTCROP <br>SP_SET: ROCK OUTCROP <br>STAMPING: 2160 78 RS 1932 <br>STABILITY: A = MOST RELIABLE AND EXPECTED TO HOLD <br>STABILITY: POSITION/ELEVATION WELL <br> </table> <p> <h2>History</h2><table border=1><tr><td>Date </td><td>Condition </td><td>Report By</td></tr><tr><td>1932 </td><td>MONUMENTED </td><td>USGS</td></tr><tr><td>1949 </td><td>GOOD </td><td>NGS</td></tr> </table> <p> <h2>STATION DESCRIPTION </h2> <p>DESCRIBED BY NATIONAL GEODETIC SURVEY 1949 5.7 MI E FROM BRIDGEVILLE. 5.7 MILES EAST ALONG STATE HIGHWAY 36 FROM THE POST OFFICE AT BRIDGEVILLE, ABOUT 90 YARDS SOUTH OF A COUNTRY SCHOOL, 87 YARDS SOUTHWEST OF A SCHOOL SIGN, 41 YARDS WEST OF THE WEST END OF A CATTLE GUARD, IN THE TOP OF A GRANITE ROCK OUTCROP, 54 FEET SOUTH OF THE CENTERLINE OF THE HIGHWAY, 36.6 FEET SOUTH OF A FENCE, AND ABOUT 10 FEET LOWER THAN THE HIGHWAY. LU1434 79 RS USGS http://www.geocaching.com/mark/details.asp?PID=LU1434 79 RS USGS Geocache Geocache 79 RS USGS USGS Unknown Cache Regular 1 1 United States California NGS Datasheet <h1>79 RS USGS</h1> <b> PID </b> LU1434 <br> <b> STATE/COUNTY</b> CA/HUMBOLDT <br> <b> USGS QUAD </b> BRIDGEVILLE (1969) <br> <p> <h2>Current Survey Control</h2> <hr> <b> NAD 83(1986)</b> 40 29 14. (N) 123 45 40. (W) SCALED <br> <b> NAVD 88 </b> 530.87 (+/-2cm) 1741.7 (feet) VERTCON <br> <hr> <b> GEOID HEIGHT</b> -29.41 (meters) GEOID03 <br> <p> <b> VERT ORDER </b> SECOND CLASS 0 (See Below) <br> <p>The horizontal coordinates were scaled from a topographic map and have an estimated accuracy of +/- 6 seconds. <p>The NAVD 88 height was computed by applying the VERTCON shift value to the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.) The vertical order pertains to the NGVD 29 superseded value. <p>The geoid height was determined by GEOID03. <p> <table border=1><tr><td> </td><td> North </td><td> East </td><td> Units</td><td> Estimated Accuracy</td></tr><tr><td>SPC CA 1 </td><td> 629,630. </td><td> 1,850,710. </td><td> MT</td><td> (+/- 180 meters Scaled)</td></tr> </table> <p> <h2>Superseded Survey Control</h2> <p> NGVD 29 (??/??/92) 529.888 (m) 1738.47 (f) ADJ UNCH 2 0 <br> <p>Superseded values are not recommended for survey control. NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums. See file dsdata.txt to determine how the superseded data were derived. <p> <h2>Marker Information</h2>U.S. NATIONAL GRID SPATIAL ADDRESS: 10TDK354821(NAD 83) <br>MARKER: DD = SURVEY DISK <br>SETTING: 66 = SET IN ROCK OUTCROP <br>SP_SET: ROCK OUTCROP <br>STAMPING: 1738 79 RS 1933 <br>STABILITY: A = MOST RELIABLE AND EXPECTED TO HOLD <br>STABILITY: POSITION/ELEVATION WELL <br> </table> <p> <h2>History</h2><table border=1><tr><td>Date </td><td>Condition </td><td>Report By</td></tr><tr><td>1933 </td><td>MONUMENTED </td><td>USGS</td></tr><tr><td>1949 </td><td>GOOD </td><td>NGS</td></tr><tr><td>1972 </td><td>GOOD</td><td>NGS</td></tr> </table> <p> <h2>STATION DESCRIPTION </h2> <p>DESCRIBED BY NATIONAL GEODETIC SURVEY 1949 3.7 MI E FROM BRIDGEVILLE. 3.7 MILES EAST ALONG STATE HIGHWAY 36 FROM THE POST OFFICE AT BRIDGEVILLE, ON A GRASSY SLOPE, ABOUT 75 YARDS WEST OF THE EAST EDGE OF A CLEARING, 82 FEET NORTH OF THE CENTERLINE OF THE HIGHWAY, 34.6 FEET NORTH OF A FENCE, IN THE TOP OF A ROCK OUTCROP, AND ABOUT 15 FEET HIGHER THAN THE HIGHWAY. <p> <h2>STATION RECOVERY (1972) </h2> <p>RECOVERED 1972 RECOVERED IN GOOD CONDITION. MX1223 9 http://www.geocaching.com/mark/details.asp?PID=MX1223 9 Geocache Geocache 9 USFS Unknown Cache Regular 1 1 United States California NGS Datasheet <h1>9</h1> <b> PID </b> MX1223 <br> <b> STATE/COUNTY</b> CA/HUMBOLDT <br> <b> USGS QUAD </b> WEITCHPEC (1979) <br> <p> <h2>Current Survey Control</h2> <hr> <b> NAD 83(1992)</b> 41 14 12.47984(N) 123 42 49.38899(W) ADJUSTED <br> <b> NAVD 88 </b> 1327. (meters) 4354. (feet) SCALED <br> <hr> <b> EPOCH DATE </b> 1991.35 <br> <b> LAPLACE CORR</b> 10.08 (seconds) DEFLEC99 <br> <b> GEOID HEIGHT</b> -27.78 (meters) GEOID03 <br> <p> <b> HORZ ORDER </b> SECOND <br> <p>The horizontal coordinates were established by classical geodetic methods and adjusted by the National Geodetic Survey in March 1994. The horizontal coordinates are valid at the epoch date displayed above. The epoch date for horizontal control is a decimal equivalence of Year/Month/Day. <p>The orthometric height was scaled from a topographic map. <p>The Laplace correction was computed from DEFLEC99 derived deflections. <p>The geoid height was determined by GEOID03. <p> <table border=1><tr><td> </td><td> North </td><td> East </td><td>Units</td><td>Scale Fact</td><td>r Converg.</td></tr><tr><td>SPC CA 1 </td><td> 712,762.933 1</td><td>856,353.958</td><td> MT </td><td>0.99991917</td><td> -1 ' 07 14.1"</td></tr><tr><td>SPC CA 1 </td><td>2,338,456.39 6</td><td>090,387.94 </td><td> sFT </td><td>0.99991917</td><td> -1 ' 07 14.1"</td></tr><tr><td>UTM 10 </td><td>4,565,290.205 </td><td>440,190.261</td><td> MT </td><td>0.99964402</td><td> -0 ' 28 13.7"</td></tr> </table> <p> <b> </b> Elev Factor x Scale Factor = Combined Factor <br> <b>SPC CA 1 </b> 0.99979625 x 0.99991917 = 0.99971543 <br> <b>UTM 10 </b> 0.99979625 x 0.99964402 = 0.99944034 <br> <p> <h2>Superseded Survey Control</h2> <p> <b> NAD 83(1986)</b> 41 14 12.47156(N) 123 42 49.40121(W) AD(1984.00) 2 <br> <b> NAD 27 </b> 41 14 13.02070(N) 123 42 45.17920(W) AD( ) 2 <br> <p>Superseded values are not recommended for survey control. NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums. See file dsdata.txt to determine how the superseded data were derived. <p> <h2>Marker Information</h2>U.S. NATIONAL GRID SPATIAL ADDRESS: 10TDL4019065290(NAD 83) <br> </table> <p> <h2>History</h2><table border=1><tr><td>Date </td><td>Condition </td><td>Report By</td></tr><tr><td>1928 </td><td>MONUMENTED </td><td>USFS</td></tr><tr><td>1952 </td><td>SEE DESCRIPTION </td><td>CGS</td></tr><tr><td>1961 </td><td>SEE DESCRIPTION </td><td>CGS</td></tr> </table> <p> <h2>STATION DESCRIPTION </h2> <p>DESCRIBED BY COAST AND GEODETIC SURVEY 1952 RECOVERED AS DESCRIBED. <p> <h2>STATION RECOVERY (1961) </h2> <p>RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1961 SEE STATION BURRILL PEAK USGS. LV0656 941 8723 A TIDAL http://www.geocaching.com/mark/details.asp?PID=LV0656 941 8723 A TIDAL Geocache Geocache 941 8723 A TIDAL NOS NOS Unknown Cache Regular 1 1 United States California NGS Datasheet <b> TIDAL BM </b> This is a Tidal Bench Mark. <br> <h1>941 8723 A TIDAL</h1> <b> PID </b> LV0656 <br> <b> STATE/COUNTY</b> CA/HUMBOLDT <br> <b> USGS QUAD </b> FIELDS LANDING (1972) <br> <p> <h2>Current Survey Control</h2> <hr> <b> NAD 83(1986)</b> 40 43 32. (N) 124 13 14. (W) SCALED <br> <b> NAVD 88 </b> 3.602 (meters) 11.82 (feet) ADJUSTED <br> <hr> <b> GEOID HEIGHT</b> -30.85 (meters) GEOID03 <br> <b> DYNAMIC HT </b> 3.601 (meters) 11.81 (feet) COMP <br> <b> MODELED GRAV</b> 980,179.5 (mgal) NAVD 88 <br> <p> <b> VERT ORDER </b> FIRST CLASS II <br> <p>The horizontal coordinates were scaled from a topographic map and have an estimated accuracy of +/- 6 seconds. <p>The orthometric height was determined by differential leveling and adjusted by the National Geodetic Survey in June 1991. <p>This Tidal Bench Mark is designated as VM 8710 by the Center for Operational Oceanographic Products and Services. <p>The geoid height was determined by GEOID03. <p>The dynamic height is computed by dividing the NAVD 88 geopotential number by the normal gravity value computed on the Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45 degrees latitude (g = 980.6199 gals.). <p>The modeled gravity was interpolated from observed gravity values. <p> <table border=1><tr><td> </td><td> North </td><td> East </td><td> Units</td><td> Estimated Accuracy</td></tr><tr><td>SPC CA 1 </td><td> 656,970. </td><td> 1,812,440. </td><td> MT</td><td> (+/- 180 meters Scaled)</td></tr> </table> <p> <h2>Superseded Survey Control</h2> <p> NGVD 29 (12/02/92) 2.605 (m) 8.55 (f) ADJUSTED 1 2 <br> <p>Superseded values are not recommended for survey control. NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums. See file dsdata.txt to determine how the superseded data were derived. <p> <h2>Marker Information</h2>U.S. NATIONAL GRID SPATIAL ADDRESS: 10TCL969090(NAD 83) <br>MARKER: DJ = TIDAL STATION DISK <br>SETTING: 49 = STAINLESS STEEL ROD W/O SLEEVE (10 FT.+) <br>SP_SET: STAINLESS STEEL ROD <br>STAMPING: 8723 A 1978 <br>MARK LOGO: NOS <br>PROJECTION: FLUSH <br>MAGNETIC: I = MARKER IS A STEEL ROD <br>STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL <br>SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR <br>SATELLITE: SATELLITE OBSERVATIONS - July 27, 1992 <br>ROD/PIPE-DEPTH: 15.8 meters <br> </table> <p> <h2>History</h2><table border=1><tr><td>Date </td><td>Condition </td><td>Report By</td></tr><tr><td>1978 </td><td>MONUMENTED </td><td>NOS</td></tr><tr><td>19880222</td><td>GOOD </td><td>NGS</td></tr><tr><td>19920727</td><td>GOOD </td><td>NGS</td></tr> </table> <p> <h2>STATION DESCRIPTION </h2> <p>DESCRIBED BY NATIONAL GEODETIC SURVEY 1988 10.6 KM (6.60 MI) SOUTHERLY ALONG U.S. HIGHWAY 101 FROM THE POST OFFICE IN EUREKA, THENCE 0.4 KM (0.25 MI) WESTERLY ALONG RAILROAD AVENUE, NEAR THE NORTHWEST CORNER OF A SMALL PARK, 30.8 M (101.0 FT) SOUTH OF THE CENTERLINE OF THE AVENUE, 4.2 M (13.8 FT) EAST OF THE EAST CURB OF A PARKING LOT, 3.4 M (11.2 FT) WEST OF THE SOUTH CORNER OF A RESTROOM, AND LEVEL WITH THE AVENUE. <p> <h2>STATION RECOVERY (1992) </h2> <p>RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1992 0.1 KM (0.05 MI) NORTHWESTERLY ALONG H STREET FROM THE POST OFFICE AND COURTHOUSE IN EUREKA, THENCE 10.7 KM (6.65 MI) SOUTHERLY ALONG U.S. HIGHWAY 101 (4TH STREET), THENCE 0.4 KM (0.25 MI) WESTERLY ALONG RAILROAD AVENUE, NEAR THE NORTHWEST CORNER OF A SMALL PARK, 30.8 M (101.0 FT) SOUTH OF AND LEVEL WITH THE AVENUE CENTERLINE, 4.2 M (13.8 FT) EAST OF THE EAST CURB OF A PARKING LOT, AND 3.4 M (11.2 FT) WEST OF THE SOUTH CORNER OF A RESTROOM. NOTE--THE DISK IS ENCASED IN A 4-INCH PIPE AND IS RECESSED 0.02 M (0.07 FT) BELOW THE GROUND SURFACE. LV0655 941 8723 TIDAL 7 RESET http://www.geocaching.com/mark/details.asp?PID=LV0655 941 8723 TIDAL 7 RESET Geocache Geocache 941 8723 TIDAL 7 RESET CGS CGS Unknown Cache Regular 1 1 United States California NGS Datasheet <b> TIDAL BM </b> This is a Tidal Bench Mark. <br> <h1>941 8723 TIDAL 7 RESET</h1> <b> PID </b> LV0655 <br> <b> STATE/COUNTY</b> CA/HUMBOLDT <br> <b> USGS QUAD </b> FIELDS LANDING (1972) <br> <p> <h2>Current Survey Control</h2> <hr> <b> NAD 83(1986)</b> 40 43 24. (N) 124 12 57. (W) SCALED <br> <b> NAVD 88 </b> 3.114 (meters) 10.22 (feet) ADJUSTED <br> <hr> <b> GEOID HEIGHT</b> -30.83 (meters) GEOID03 <br> <b> DYNAMIC HT </b> 3.113 (meters) 10.21 (feet) COMP <br> <b> MODELED GRAV</b> 980,175.9 (mgal) NAVD 88 <br> <p> <b> VERT ORDER </b> FIRST CLASS II <br> <p>The horizontal coordinates were scaled from a topographic map and have an estimated accuracy of +/- 6 seconds. <p>The orthometric height was determined by differential leveling and adjusted by the National Geodetic Survey in June 1991. <p>This Tidal Bench Mark is designated as VM 8712 by the Center for Operational Oceanographic Products and Services. <p>The geoid height was determined by GEOID03. <p>The dynamic height is computed by dividing the NAVD 88 geopotential number by the normal gravity value computed on the Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45 degrees latitude (g = 980.6199 gals.). <p>The modeled gravity was interpolated from observed gravity values. <p> <table border=1><tr><td> </td><td> North </td><td> East </td><td> Units</td><td> Estimated Accuracy</td></tr><tr><td>SPC CA 1 </td><td> 656,710. </td><td> 1,812,830. </td><td> MT</td><td> (+/- 180 meters Scaled)</td></tr> </table> <p> <h2>Superseded Survey Control</h2> <p> NGVD 29 (12/02/92) 2.117 (m) 6.95 (f) ADJUSTED 1 2 <br> <p>Superseded values are not recommended for survey control. NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums. See file dsdata.txt to determine how the superseded data were derived. <p> <h2>Marker Information</h2>U.S. NATIONAL GRID SPATIAL ADDRESS: 10TCL973087(NAD 83) <br>MARKER: DJ = TIDAL STATION DISK <br>SETTING: 31 = SET IN A PAVEMENT SUCH AS STREET, SIDEWALK, CURB, ETC. <br>SP_SET: CURB <br>STAMPING: NO 7 RESET 1961 <br>MARK LOGO: CGS <br>MAGNETIC: N = NO MAGNETIC MATERIAL <br>STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY <br>SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR <br>SATELLITE: SATELLITE OBSERVATIONS - July 27, 1992 <br> </table> <p> <h2>History</h2><table border=1><tr><td>Date </td><td>Condition </td><td>Report By</td></tr><tr><td>1961 </td><td>MONUMENTED </td><td>CGS</td></tr><tr><td>19880222</td><td>GOOD </td><td>NGS</td></tr><tr><td>19920727</td><td>GOOD </td><td>NGS</td></tr> </table> <p> <h2>STATION DESCRIPTION </h2> <p>DESCRIBED BY NATIONAL GEODETIC SURVEY 1988 IN FIELDS LANDING, AT THE INTERSECTION OF FIELDS LANDING DRIVE AND CENTRAL AVENUE, IN TOP OF A CONCRETE CURB, 22.9 M (75.1 FT) WEST OF THE CENTERLINE OF THE DRIVE, 10.6 M (34.8 FT) SOUTH OF THE CENTER OF THE AVENUE, 0.95 M (3.1 FT) SOUTHEAST OF THE NORTHEAST CORNER OF THE SILVER SIDE MOTEL OFFICE BUILDING, 0.45 M (1.5 FT) EAST OF THE EAST FACE OF THE BUILDING, AND LEVEL WITH THE MOTEL DRIVEWAY. <p> <h2>STATION RECOVERY (1992) </h2> <p>RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1992 IN FIELDS LANDING, AT THE INTERSECTION OF FIELDS LANDING DRIVE AND CENTRAL AVENUE, IN A CONCRETE CURB ALONG THE WEST SIDE OF THE DRIVE, 22.9 M (75.1 FT) WEST OF THE CENTERLINE OF THE DRIVE, 10.6 M (34.8 FT) SOUTH OF THE CENTER OF THE AVENUE, 0.9 M (3.0 FT) SOUTHEAST OF THE NORTHEAST CORNER OF THE SILVER SIDE MOTEL OFFICE, 0.4 M (1.3 FT) EAST OF THE EAST FACE OF THE BUILDING, AND LEVEL WITH THE MOTEL DRIVEWAY. LV0654 941 8739 A TIDAL http://www.geocaching.com/mark/details.asp?PID=LV0654 941 8739 A TIDAL Geocache Geocache 941 8739 A TIDAL NOS NOS Unknown Cache Regular 1 1 United States California NGS Datasheet <b> TIDAL BM </b> This is a Tidal Bench Mark. <br> <h1>941 8739 A TIDAL</h1> <b> PID </b> LV0654 <br> <b> STATE/COUNTY</b> CA/HUMBOLDT <br> <b> USGS QUAD </b> FIELDS LANDING (1972) <br> <p> <h2>Current Survey Control</h2> <hr> <b> NAD 83(1986)</b> 40 44 21. (N) 124 12 47. (W) SCALED <br> <b> NAVD 88 </b> 2.922 (meters) 9.59 (feet) ADJUSTED <br> <hr> <b> GEOID HEIGHT</b> -30.80 (meters) GEOID03 <br> <b> DYNAMIC HT </b> 2.921 (meters) 9.58 (feet) COMP <br> <b> MODELED GRAV</b> 980,187.8 (mgal) NAVD 88 <br> <p> <b> VERT ORDER </b> FIRST CLASS II <br> <p>The horizontal coordinates were scaled from a topographic map and have an estimated accuracy of +/- 6 seconds. <p>The orthometric height was determined by differential leveling and adjusted by the National Geodetic Survey in June 1991. <p>This Tidal Bench Mark is designated as VM 8716 by the Center for Operational Oceanographic Products and Services. <p>The geoid height was determined by GEOID03. <p>The dynamic height is computed by dividing the NAVD 88 geopotential number by the normal gravity value computed on the Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45 degrees latitude (g = 980.6199 gals.). <p>The modeled gravity was interpolated from observed gravity values. <p> <table border=1><tr><td> </td><td> North </td><td> East </td><td> Units</td><td> Estimated Accuracy</td></tr><tr><td>SPC CA 1 </td><td> 658,460. </td><td> 1,813,110. </td><td> MT</td><td> (+/- 180 meters Scaled)</td></tr> </table> <p> <h2>Superseded Survey Control</h2> <p> NGVD 29 (12/02/92) 1.924 (m) 6.31 (f) ADJUSTED 1 2 <br> <p>Superseded values are not recommended for survey control. NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums. See file dsdata.txt to determine how the superseded data were derived. <p> <h2>Marker Information</h2>U.S. NATIONAL GRID SPATIAL ADDRESS: 10TCL975105(NAD 83) <br>MARKER: DJ = TIDAL STATION DISK <br>SETTING: 35 = SET IN A MAT FOUNDATION OR CONCRETE SLAB OTHER THAN <br>WITH SETTING: PAVEMENT <br>SP_SET: FOUNDATION <br>STAMPING: 8739 A 1978 <br>MARK LOGO: NOS <br>MAGNETIC: N = NO MAGNETIC MATERIAL <br>STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO <br>STABILITY: SURFACE MOTION <br> </table> <p> <h2>History</h2><table border=1><tr><td>Date </td><td>Condition </td><td>Report By</td></tr><tr><td>1978 </td><td>MONUMENTED </td><td>NOS</td></tr><tr><td>19880222</td><td>GOOD </td><td>NGS</td></tr><tr><td>19920727</td><td>MARK NOT FOUND </td><td>NGS</td></tr> </table> <p> <h2>STATION DESCRIPTION </h2> <p>DESCRIBED BY NATIONAL GEODETIC SURVEY 1988 9.3 KM (5.80 MI) SOUTHERLY ALONG U.S. HIGHWAY 101 FROM THE POST OFFICE IN EUREKA, THENCE 0.4 KM (0.25 MI) NORTHWESTERLY ALONG KING SALMON ROAD, IN THE SOUTH CORNER OF A 9 BY 9 FOOT CONCRETE SEWER PUMP FOUNDATION, 25.7 M (84.3 FT) NORTHWEST OF THE NORTHWEST CORNER OF RED BLUFF BRIDGE, 11.5 M (37.7 FT) SOUTHWEST OF THE CENTERLINE OF THE ROAD, 3.7 M (12.1 FT) NORTH OF THE CENTER OF A TRACK ROAD, AND LEVEL WITH THE ROAD. <p> <h2>STATION RECOVERY (1992) </h2> <p>RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1992 THE SEWER PUMP FOUNDATION HAS BEEN REPLACED. ASSUMED DESTROYED. LV0653 941 8739 B TIDAL http://www.geocaching.com/mark/details.asp?PID=LV0653 941 8739 B TIDAL Geocache Geocache 941 8739 B TIDAL NOS NOS Unknown Cache Regular 1 1 United States California NGS Datasheet <b> TIDAL BM </b> This is a Tidal Bench Mark. <br> <h1>941 8739 B TIDAL</h1> <b> PID </b> LV0653 <br> <b> STATE/COUNTY</b> CA/HUMBOLDT <br> <b> USGS QUAD </b> FIELDS LANDING (1972) <br> <p> <h2>Current Survey Control</h2> <hr> <b> NAD 83(1986)</b> 40 44 18. (N) 124 12 46. (W) SCALED <br> <b> NAVD 88 </b> 2.582 (meters) 8.47 (feet) ADJUSTED <br> <hr> <b> GEOID HEIGHT</b> -30.80 (meters) GEOID03 <br> <b> DYNAMIC HT </b> 2.581 (meters) 8.47 (feet) COMP <br> <b> MODELED GRAV</b> 980,187.1 (mgal) NAVD 88 <br> <p> <b> VERT ORDER </b> FIRST CLASS II <br> <p>The horizontal coordinates were scaled from a topographic map and have an estimated accuracy of +/- 6 seconds. <p>The orthometric height was determined by differential leveling and adjusted by the National Geodetic Survey in June 1991. <p>This Tidal Bench Mark is designated as VM 8717 by the Center for Operational Oceanographic Products and Services. <p>The geoid height was determined by GEOID03. <p>The dynamic height is computed by dividing the NAVD 88 geopotential number by the normal gravity value computed on the Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45 degrees latitude (g = 980.6199 gals.). <p>The modeled gravity was interpolated from observed gravity values. <p> <table border=1><tr><td> </td><td> North </td><td> East </td><td> Units</td><td> Estimated Accuracy</td></tr><tr><td>SPC CA 1 </td><td> 658,370. </td><td> 1,813,130. </td><td> MT</td><td> (+/- 180 meters Scaled)</td></tr> </table> <p> <h2>Superseded Survey Control</h2> <p> NGVD 29 (12/02/92) 1.583 (m) 5.19 (f) ADJUSTED 1 2 <br> <p>Superseded values are not recommended for survey control. NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums. See file dsdata.txt to determine how the superseded data were derived. <p> <h2>Marker Information</h2>U.S. NATIONAL GRID SPATIAL ADDRESS: 10TCL976104(NAD 83) <br>MARKER: DJ = TIDAL STATION DISK <br>SETTING: 48 = GALVANIZED STEEL ROD W/O SLEEVE (1O FT.+) <br>SP_SET: GALVANIZED STEEL ROD <br>STAMPING: 8739 B 1978 <br>MARK LOGO: NOS <br>PROJECTION: PROJECTING 7 CENTIMETERS <br>MAGNETIC: I = MARKER IS A STEEL ROD <br>STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL <br>SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR <br>SATELLITE: SATELLITE OBSERVATIONS - July 06, 1992 <br>ROD/PIPE-DEPTH: 15.5 meters <br> </table> <p> <h2>History</h2><table border=1><tr><td>Date </td><td>Condition </td><td>Report By</td></tr><tr><td>1978 </td><td>MONUMENTED </td><td>NOS</td></tr><tr><td>19880222</td><td>GOOD </td><td>NGS</td></tr><tr><td>19920706</td><td>GOOD </td><td>NGS</td></tr> </table> <p> <h2>STATION DESCRIPTION </h2> <p>DESCRIBED BY NATIONAL GEODETIC SURVEY 1988 9.3 KM (5.80 MI) SOUTHERLY ALONG U.S. HIGHWAY 101 FROM THE POST OFFICE IN EUREKA, THENCE 0.3 KM (0.20 MI) NORTHWESTERLY ALONG KING SALMON ROAD, 27.7 M (90.9 FT) SOUTH OF THE SOUTHWEST CORNER OF RED BLUFF BRIDGE, 17.5 M (57.4 FT) NORTHWEST OF THE CENTER OF A ROAD AND GATE LEADING TO THE KING SALMON SEAWATER REARING PONDS, 9.8 M (32.2 FT) SOUTHWEST OF THE CENTERLINE OF THE ROAD, 4.1 M (13.5 FT) NORTHWEST OF THE CENTER OF A TRACK ROAD, 0.6 M (2.0 FT) BELOW THE SURFACE OF THE ROAD, AND 0.3 M (1.0 FT) WEST OF A WITNESS POST. <p> <h2>STATION RECOVERY (1992) </h2> <p>RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1992 0.1 KM (0.05 MI) NORTHWESTERLY ALONG H STREET FROM THE POST OFFICE AND COURTHOUSE IN EUREKA, THENCE 9.3 KM (5.75 MI) SOUTHERLY ALONG U.S. HIGHWAY 101 (4TH STREET), THENCE 0.3 KM (0.20 MI) NORTHWESTERLY ALONG KING SALMON ROAD, 27.7 M (90.9 FT) SOUTH OF THE SOUTHWEST CORNER OF RED BLUFF BRIDGE, 17.5 M (57.4 FT) NORTHWEST OF THE CENTER OF A ROAD AND GATE LEADING TO THE KING SALMON SEAWATER REARING PONDS, 9.8 M (32.2 FT) SOUTHWEST OF THE CENTERLINE OF THE ROAD, 4.1 M (13.5 FT) NORTHWEST OF THE CENTER OF A TRACK ROAD, 0.6 M (2.0 FT) BELOW THE LEVEL OF THE ROAD, AND 0.3 M (1.0 FT) WEST OF A WITNESS POST. NOTE--THE DISK IS ENCASED IN A 4-INCH PIPE AND IS FLUSH WITH THE GROUND SURFACE. LV0652 941 8739 C TIDAL http://www.geocaching.com/mark/details.asp?PID=LV0652 941 8739 C TIDAL Geocache Geocache 941 8739 C TIDAL NOS NOS Unknown Cache Regular 1 1 United States California NGS Datasheet <b> TIDAL BM </b> This is a Tidal Bench Mark. <br> <h1>941 8739 C TIDAL</h1> <b> PID </b> LV0652 <br> <b> STATE/COUNTY</b> CA/HUMBOLDT <br> <b> USGS QUAD </b> FIELDS LANDING (1972) <br> <p> <h2>Current Survey Control</h2> <hr> <b> NAD 83(1986)</b> 40 44 13. (N) 124 12 41. (W) SCALED <br> <b> NAVD 88 </b> 2.769 (meters) 9.08 (feet) ADJUSTED <br> <hr> <b> GEOID HEIGHT</b> -30.80 (meters) GEOID03 <br> <b> DYNAMIC HT </b> 2.768 (meters) 9.08 (feet) COMP <br> <b> MODELED GRAV</b> 980,185.9 (mgal) NAVD 88 <br> <p> <b> VERT ORDER </b> FIRST CLASS II <br> <p>The horizontal coordinates were scaled from a topographic map and have an estimated accuracy of +/- 6 seconds. <p>The orthometric height was determined by differential leveling and adjusted by the National Geodetic Survey in June 1991. <p>This Tidal Bench Mark is designated as VM 8718 by the Center for Operational Oceanographic Products and Services. <p>The geoid height was determined by GEOID03. <p>The dynamic height is computed by dividing the NAVD 88 geopotential number by the normal gravity value computed on the Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45 degrees latitude (g = 980.6199 gals.). <p>The modeled gravity was interpolated from observed gravity values. <p> <table border=1><tr><td> </td><td> North </td><td> East </td><td> Units</td><td> Estimated Accuracy</td></tr><tr><td>SPC CA 1 </td><td> 658,210. </td><td> 1,813,250. </td><td> MT</td><td> (+/- 180 meters Scaled)</td></tr> </table> <p> <h2>Superseded Survey Control</h2> <p> NGVD 29 (12/02/92) 1.771 (m) 5.81 (f) ADJUSTED 1 2 <br> <p>Superseded values are not recommended for survey control. NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums. See file dsdata.txt to determine how the superseded data were derived. <p> <h2>Marker Information</h2>U.S. NATIONAL GRID SPATIAL ADDRESS: 10TCL977102(NAD 83) <br>MARKER: DJ = TIDAL STATION DISK <br>SETTING: 48 = GALVANIZED STEEL ROD W/O SLEEVE (1O FT.+) <br>SP_SET: GALVANIZED STEEL ROD <br>STAMPING: 8739 C 1978 <br>MARK LOGO: NOS <br>PROJECTION: PROJECTING 5 CENTIMETERS <br>MAGNETIC: I = MARKER IS A STEEL ROD <br>STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL <br>SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR <br>SATELLITE: SATELLITE OBSERVATIONS - July 06, 1992 <br>ROD/PIPE-DEPTH: 14.6 meters <br> </table> <p> <h2>History</h2><table border=1><tr><td>Date </td><td>Condition </td><td>Report By</td></tr><tr><td>1978 </td><td>MONUMENTED </td><td>NOS</td></tr><tr><td>19880222</td><td>GOOD </td><td>NGS</td></tr><tr><td>19920706</td><td>GOOD </td><td>NGS</td></tr> </table> <p> <h2>STATION DESCRIPTION </h2> <p>DESCRIBED BY NATIONAL GEODETIC SURVEY 1988 9.3 KM (5.80 MI) SOUTHERLY ALONG U.S. HIGHWAY 101 FROM THE POST OFFICE IN EUREKA, THENCE 0.1 KM (0.05 MI) NORTHWESTERLY ALONG KING SALMON ROAD, 11.0 M (36.1 FT) SOUTHWEST OF THE CENTERLINE OF THE ROAD, 3.5 M (11.5 FT) NORTHWEST OF THE CENTER OF A PRIVATE PAVED ROAD, AND LEVEL WITH THE PRIVATE ROAD. <p> <h2>STATION RECOVERY (1992) </h2> <p>RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1992 0.1 KM (0.05 MI) NORTHWESTERLY ALONG H STREET FROM THE POST OFFICE AND COURTHOUSE IN EUREKA, THENCE 9.3 KM (5.75 MI) SOUTHERLY ALONG U.S. HIGHWAY 101 (4TH STREET), THENCE 0.1 KM (0.05 MI) NORTHWESTERLY ALONG KING SALMON ROAD, 11.0 M (36.1 FT) SOUTHWEST OF THE CENTERLINE OF THE ROAD, AND 3.5 M (11.5 FT) NORTHWEST OF AND LEVEL WITH THE CENTER OF A PAVED ROAD. NOTE--THE DISK IS ENCASED IN A 4-INCH PIPE AND IS FLUSH WITH THE GROUND SURFACE. LV0650 941 8757 A TIDAL http://www.geocaching.com/mark/details.asp?PID=LV0650 941 8757 A TIDAL Geocache Geocache 941 8757 A TIDAL NOS NOS Unknown Cache Regular 1 1 United States California NGS Datasheet <b> TIDAL BM </b> This is a Tidal Bench Mark. <br> <h1>941 8757 A TIDAL</h1> <b> PID </b> LV0650 <br> <b> STATE/COUNTY</b> CA/HUMBOLDT <br> <b> USGS QUAD </b> EUREKA (1972) <br> <p> <h2>Current Survey Control</h2> <hr> <b> NAD 83(1986)</b> 40 45 21. (N) 124 11 41. (W) SCALED <br> <b> NAVD 88 </b> 4.059 (meters) 13.32 (feet) ADJUSTED <br> <hr> <b> GEOID HEIGHT</b> -30.70 (meters) GEOID03 <br> <b> DYNAMIC HT </b> 4.058 (meters) 13.31 (feet) COMP <br> <b> MODELED GRAV</b> 980,201.7 (mgal) NAVD 88 <br> <p> <b> VERT ORDER </b> FIRST CLASS II <br> <p>The horizontal coordinates were scaled from a topographic map and have an estimated accuracy of +/- 6 seconds. <p>The orthometric height was determined by differential leveling and adjusted by the National Geodetic Survey in June 1991. <p>This Tidal Bench Mark is designated as VM 11954 by the Center for Operational Oceanographic Products and Services. <p>The geoid height was determined by GEOID03. <p>The dynamic height is computed by dividing the NAVD 88 geopotential number by the normal gravity value computed on the Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45 degrees latitude (g = 980.6199 gals.). <p>The modeled gravity was interpolated from observed gravity values. <p> <table border=1><tr><td> </td><td> North </td><td> East </td><td> Units</td><td> Estimated Accuracy</td></tr><tr><td>SPC CA 1 </td><td> 660,270. </td><td> 1,814,710. </td><td> MT</td><td> (+/- 180 meters Scaled)</td></tr> </table> <p> <h2>Superseded Survey Control</h2> <p> NGVD 29 (12/02/92) 3.058 (m) 10.03 (f) ADJUSTED 1 2 <br> <p>Superseded values are not recommended for survey control. NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums. See file dsdata.txt to determine how the superseded data were derived. <p> <h2>Marker Information</h2>U.S. NATIONAL GRID SPATIAL ADDRESS: 10TCL991123(NAD 83) <br>MARKER: DJ = TIDAL STATION DISK <br>SETTING: 38 = SET IN THE ABUTMENT OR PIER OF A LARGE BRIDGE <br>SP_SET: PIER <br>STAMPING: 8757 A 1977 <br>MARK LOGO: NOS <br>MAGNETIC: N = NO MAGNETIC MATERIAL <br>STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL <br> </table> <p> <h2>History</h2><table border=1><tr><td>Date </td><td>Condition </td><td>Report By</td></tr><tr><td>1977 </td><td>MONUMENTED </td><td>NOS</td></tr><tr><td>19880222</td><td>GOOD </td><td>NGS</td></tr> </table> <p> <h2>STATION DESCRIPTION </h2> <p>DESCRIBED BY NATIONAL GEODETIC SURVEY 1988 8.0 KM (4.95 MI) SOUTHERLY ALONG U.S. HIGHWAY 101 FROM THE POST OFFICE IN EUREKA, IN TOP OF THE MOST EASTERLY 1 OF 2 CONCRETE PILES AT THE SOUTHEAST CORNER OF THE NORTHWESTERN PACIFIC RAILROAD BRIDGE SPANNING THE ELK RIVER, 335.3 M (1100.1 FT) WEST OF THE CENTERLINE OF THE SOUTHBOUND LANES OF THE HIGHWAY, 3.7 M (12.1 FT) EAST OF THE NEAR RAIL, AND 1.0 M (3.3 FT) BELOW THE LEVEL OF THE TRACKS. LV0634 941 8767 A TIDAL http://www.geocaching.com/mark/details.asp?PID=LV0634 941 8767 A TIDAL Geocache Geocache 941 8767 A TIDAL NOS NOS Unknown Cache Regular 1 1 United States California NGS Datasheet <b> TIDAL BM </b> This is a Tidal Bench Mark. <br> <h1>941 8767 A TIDAL</h1> <b> PID </b> LV0634 <br> <b> STATE/COUNTY</b> CA/HUMBOLDT <br> <b> USGS QUAD </b> EUREKA (1972) <br> <p> <h2>Current Survey Control</h2> <hr> <b> NAD 83(1986)</b> 40 46 00. (N) 124 13 07. (W) SCALED <br> <b> NAVD 88 </b> 4.710 (meters) 15.45 (feet) ADJUSTED <br> <hr> <b> GEOID HEIGHT</b> -30.78 (meters) GEOID03 <br> <b> DYNAMIC HT </b> 4.708 (meters) 15.45 (feet) COMP <br> <b> MODELED GRAV</b> 980,203.6 (mgal) NAVD 88 <br> <p> <b> VERT ORDER </b> FIRST CLASS II <br> <p>The horizontal coordinates were scaled from a topographic map and have an estimated accuracy of +/- 6 seconds. <p>The orthometric height was determined by differential leveling and adjusted by the National Geodetic Survey in June 1991. <p>This Tidal Bench Mark is designated as VM 1720 by the Center for Operational Oceanographic Products and Services. <p>The geoid height was determined by GEOID03. <p>The dynamic height is computed by dividing the NAVD 88 geopotential number by the normal gravity value computed on the Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45 degrees latitude (g = 980.6199 gals.). <p>The modeled gravity was interpolated from observed gravity values. <p> <table border=1><tr><td> </td><td> North </td><td> East </td><td> Units</td><td> Estimated Accuracy</td></tr><tr><td>SPC CA 1 </td><td> 661,520. </td><td> 1,812,720. </td><td> MT</td><td> (+/- 180 meters Scaled)</td></tr> </table> <p> <h2>Superseded Survey Control</h2> <p> NGVD 29 (12/02/92) 3.687 (m) 12.10 (f) ADJUSTED 1 2 <br> <p>Superseded values are not recommended for survey control. NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums. See file dsdata.txt to determine how the superseded data were derived. <p> <h2>Marker Information</h2>U.S. NATIONAL GRID SPATIAL ADDRESS: 10TCL971135(NAD 83) <br>MARKER: DJ = TIDAL STATION DISK <br>SETTING: 35 = SET IN A MAT FOUNDATION OR CONCRETE SLAB OTHER THAN <br>WITH SETTING: PAVEMENT <br>SP_SET: FLAG POLE BASE <br>STAMPING: 8767 A 1981 <br>MARK LOGO: NOS <br>MAGNETIC: N = NO MAGNETIC MATERIAL <br>STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO <br>STABILITY: SURFACE MOTION <br> </table> <p> <h2>History</h2><table border=1><tr><td>Date </td><td>Condition </td><td>Report By</td></tr><tr><td>1981 </td><td>MONUMENTED </td><td>NOS</td></tr><tr><td>19880220</td><td>GOOD </td><td>NGS</td></tr> </table> <p> <h2>STATION DESCRIPTION </h2> <p>DESCRIBED BY NATIONAL GEODETIC SURVEY 1988 19.1 KM (11.85 MI) SOUTHWESTERLY ALONG STATE HIGHWAY 255 FROM THE JUNCTION WITH U.S. HIGHWAY 101 IN ARCATA, IN THE BASE OF A FLAG POLE, 34.3 M (112.5 FT) SOUTHEAST OF A FENCE, 10.7 M (35.1 FT) NORTHWEST OF THE WEST CORNER OF THE U.S. COAST GUARD STATION, 7.0 M (23.0 FT) NORTHEAST OF A FIRE HYDRANT, AND LEVEL WITH THE GROUND SURFACE. LV0632 941 8767 B TIDAL http://www.geocaching.com/mark/details.asp?PID=LV0632 941 8767 B TIDAL Geocache Geocache 941 8767 B TIDAL NOS NOS Unknown Cache Regular 1 1 United States California NGS Datasheet <b> TIDAL BM </b> This is a Tidal Bench Mark. <br> <h1>941 8767 B TIDAL</h1> <b> PID </b> LV0632 <br> <b> STATE/COUNTY</b> CA/HUMBOLDT <br> <b> USGS QUAD </b> EUREKA (1972) <br> <p> <h2>Current Survey Control</h2> <hr> <b> NAD 83(1986)</b> 40 46 05. (N) 124 13 03. (W) SCALED <br> <b> NAVD 88 </b> 3.167 (meters) 10.39 (feet) ADJUSTED <br> <hr> <b> GEOID HEIGHT</b> -30.78 (meters) GEOID03 <br> <b> DYNAMIC HT </b> 3.166 (meters) 10.39 (feet) COMP <br> <b> MODELED GRAV</b> 980,204.0 (mgal) NAVD 88 <br> <p> <b> VERT ORDER </b> FIRST CLASS II <br> <p>The horizontal coordinates were scaled from a topographic map and have an estimated accuracy of +/- 6 seconds. <p>The orthometric height was determined by differential leveling and adjusted by the National Geodetic Survey in June 1991. <p>This Tidal Bench Mark is designated as VM 1721 by the Center for Operational Oceanographic Products and Services. <p>The geoid height was determined by GEOID03. <p>The dynamic height is computed by dividing the NAVD 88 geopotential number by the normal gravity value computed on the Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45 degrees latitude (g = 980.6199 gals.). <p>The modeled gravity was interpolated from observed gravity values. <p> <table border=1><tr><td> </td><td> North </td><td> East </td><td> Units</td><td> Estimated Accuracy</td></tr><tr><td>SPC CA 1 </td><td> 661,680. </td><td> 1,812,820. </td><td> MT</td><td> (+/- 180 meters Scaled)</td></tr> </table> <p> <h2>Superseded Survey Control</h2> <p> NGVD 29 (12/02/92) 2.144 (m) 7.03 (f) ADJUSTED 1 2 <br> <p>Superseded values are not recommended for survey control. NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums. See file dsdata.txt to determine how the superseded data were derived. <p> <h2>Marker Information</h2>U.S. NATIONAL GRID SPATIAL ADDRESS: 10TCL972137(NAD 83) <br>MARKER: DJ = TIDAL STATION DISK <br>SETTING: 49 = STAINLESS STEEL ROD W/O SLEEVE (10 FT.+) <br>SP_SET: STAINLESS STEEL ROD <br>STAMPING: 8767 B 1981 <br>MARK LOGO: NOS <br>PROJECTION: PROJECTING 20 CENTIMETERS <br>MAGNETIC: N = NO MAGNETIC MATERIAL <br>STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL <br>ROD/PIPE-DEPTH: 14.6 meters <br> </table> <p> <h2>History</h2><table border=1><tr><td>Date </td><td>Condition </td><td>Report By</td></tr><tr><td>1981 </td><td>MONUMENTED </td><td>NOS</td></tr><tr><td>19880216</td><td>GOOD </td><td>NGS</td></tr> </table> <p> <h2>STATION DESCRIPTION </h2> <p>DESCRIBED BY NATIONAL GEODETIC SURVEY 1988 18.9 KM (11.75 MI) SOUTHWESTERLY ALONG STATE HIGHWAY 255 FROM THE JUNCTION OF U.S. HIGHWAY 101 IN ARCATA, AT THE U.S. COAST GUARD STATION, 86.0 M (282.2 FT) SOUTHEAST OF THE CENTER OF THE ROAD, 16.1 M (52.8 FT) EAST OF THE EAST CORNER OF THE MOST SOUTHEASTERLY 1 OF 3 APARTMENT COMPLEXS, 12.0 M (39.4 FT) NORTHEAST OF A FIRE HYDRANT, 1.1 M (3.6 FT) NORTH OF A WITNESS POST, 0.4 M (1.3 FT) WEST OF A WITNESS POST, AND LEVEL WITH THE ROAD. NOTE--THE DISK IS 0.3 M (1.0 FT) BELOW THE GROUND SURFACE AND IS ENCASED IN A 5-INCH PVC PIPE. LV0630 941 8767 C TIDAL http://www.geocaching.com/mark/details.asp?PID=LV0630 941 8767 C TIDAL Geocache Geocache 941 8767 C TIDAL NOS NOS Unknown Cache Regular 1 1 United States California NGS Datasheet <b> TIDAL BM </b> This is a Tidal Bench Mark. <br> <h1>941 8767 C TIDAL</h1> <b> PID </b> LV0630 <br> <b> STATE/COUNTY</b> CA/HUMBOLDT <br> <b> USGS QUAD </b> EUREKA (1972) <br> <p> <h2>Current Survey Control</h2> <hr> <b> NAD 83(1986)</b> 40 46 04. (N) 124 13 07. (W) SCALED <br> <b> NAVD 88 </b> 3.225 (meters) 10.58 (feet) ADJUSTED <br> <hr> <b> GEOID HEIGHT</b> -30.78 (meters) GEOID03 <br> <b> DYNAMIC HT </b> 3.224 (meters) 10.58 (feet) COMP <br> <b> MODELED GRAV</b> 980,203.9 (mgal) NAVD 88 <br> <p> <b> VERT ORDER </b> FIRST CLASS II <br> <p>The horizontal coordinates were scaled from a topographic map and have an estimated accuracy of +/- 6 seconds. <p>The orthometric height was determined by differential leveling and adjusted by the National Geodetic Survey in June 1991. <p>This Tidal Bench Mark is designated as VM 1722 by the Center for Operational Oceanographic Products and Services. <p>The geoid height was determined by GEOID03. <p>The dynamic height is computed by dividing the NAVD 88 geopotential number by the normal gravity value computed on the Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45 degrees latitude (g = 980.6199 gals.). <p>The modeled gravity was interpolated from observed gravity values. <p> <table border=1><tr><td> </td><td> North </td><td> East </td><td> Units</td><td> Estimated Accuracy</td></tr><tr><td>SPC CA 1 </td><td> 661,650. </td><td> 1,812,720. </td><td> MT</td><td> (+/- 180 meters Scaled)</td></tr> </table> <p> <h2>Superseded Survey Control</h2> <p> NGVD 29 (12/02/92) 2.202 (m) 7.22 (f) ADJUSTED 1 2 <br> <p>Superseded values are not recommended for survey control. NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums. See file dsdata.txt to determine how the superseded data were derived. <p> <h2>Marker Information</h2>U.S. NATIONAL GRID SPATIAL ADDRESS: 10TCL971136(NAD 83) <br>MARKER: DJ = TIDAL STATION DISK <br>SETTING: 49 = STAINLESS STEEL ROD W/O SLEEVE (10 FT.+) <br>SP_SET: STAINLESS STEEL ROD <br>STAMPING: 8767 C 1981 <br>MARK LOGO: NOS <br>PROJECTION: PROJECTING 10 CENTIMETERS <br>MAGNETIC: N = NO MAGNETIC MATERIAL <br>STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL <br>ROD/PIPE-DEPTH: 12.2 meters <br> </table> <p> <h2>History</h2><table border=1><tr><td>Date </td><td>Condition </td><td>Report By</td></tr><tr><td>1981 </td><td>MONUMENTED </td><td>NOS</td></tr><tr><td>19880220</td><td>GOOD </td><td>NGS</td></tr> </table> <p> <h2>STATION DESCRIPTION </h2> <p>DESCRIBED BY NATIONAL GEODETIC SURVEY 1988 19.0 KM (11.80 MI) SOUTHWESTERLY ALONG STATE HIGHWAY 255 FROM THE JUNCTION WITH U.S. HIGHWAY 101 IN ARCATA, AT THE U.S. COAST GUARD STATION, 25.2 M (82.7 FT) SOUTHWEST OF A JOG IN A FENCE, 10.6 M (34.8 FT) NORTHWEST OF THE CENTER OF THE ROAD, 10.5 M (34.4 FT) WEST OF A METAL STREET LIGHT POLE, 0.6 M (2.0 FT) NORTHWEST OF A FENCE, AND LEVEL WITH THE ROAD. NOTE--THE DISK IS ENCASED IN A 5-INCH PVC PIPE. LV0631 941 8767 D TIDAL http://www.geocaching.com/mark/details.asp?PID=LV0631 941 8767 D TIDAL Geocache Geocache 941 8767 D TIDAL NOS NOS Unknown Cache Regular 1 1 United States California NGS Datasheet <b> TIDAL BM </b> This is a Tidal Bench Mark. <br> <h1>941 8767 D TIDAL</h1> <b> PID </b> LV0631 <br> <b> STATE/COUNTY</b> CA/HUMBOLDT <br> <b> USGS QUAD </b> EUREKA (1972) <br> <p> <h2>Current Survey Control</h2> <hr> <b> NAD 83(1986)</b> 40 46 06. (N) 124 13 05. (W) SCALED <br> <b> NAVD 88 </b> 3.622 (meters) 11.88 (feet) ADJUSTED <br> <hr> <b> GEOID HEIGHT</b> -30.78 (meters) GEOID03 <br> <b> DYNAMIC HT </b> 3.620 (meters) 11.88 (feet) COMP <br> <b> MODELED GRAV</b> 980,204.1 (mgal) NAVD 88 <br> <p> <b> VERT ORDER </b> FIRST CLASS II <br> <p>The horizontal coordinates were scaled from a topographic map and have an estimated accuracy of +/- 6 seconds. <p>The orthometric height was determined by differential leveling and adjusted by the National Geodetic Survey in June 1991. <p>This Tidal Bench Mark is designated as VM 1723 by the Center for Operational Oceanographic Products and Services. <p>The geoid height was determined by GEOID03. <p>The dynamic height is computed by dividing the NAVD 88 geopotential number by the normal gravity value computed on the Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45 degrees latitude (g = 980.6199 gals.). <p>The modeled gravity was interpolated from observed gravity values. <p> <table border=1><tr><td> </td><td> North </td><td> East </td><td> Units</td><td> Estimated Accuracy</td></tr><tr><td>SPC CA 1 </td><td> 661,710. </td><td> 1,812,770. </td><td> MT</td><td> (+/- 180 meters Scaled)</td></tr> </table> <p> <h2>Superseded Survey Control</h2> <p> NGVD 29 (12/02/92) 2.599 (m) 8.53 (f) ADJUSTED 1 2 <br> <p>Superseded values are not recommended for survey control. NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums. See file dsdata.txt to determine how the superseded data were derived. <p> <h2>Marker Information</h2>U.S. NATIONAL GRID SPATIAL ADDRESS: 10TCL972137(NAD 83) <br>MARKER: DJ = TIDAL STATION DISK <br>SETTING: 49 = STAINLESS STEEL ROD W/O SLEEVE (10 FT.+) <br>SP_SET: STAINLESS STEEL ROD <br>STAMPING: 8767 D 1981 <br>MARK LOGO: NOS <br>PROJECTION: PROJECTING 10 CENTIMETERS <br>MAGNETIC: N = NO MAGNETIC MATERIAL <br>STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL <br>ROD/PIPE-DEPTH: 14.6 meters <br> </table> <p> <h2>History</h2><table border=1><tr><td>Date </td><td>Condition </td><td>Report By</td></tr><tr><td>1981 </td><td>MONUMENTED </td><td>NOS</td></tr><tr><td>19880220</td><td>GOOD </td><td>NGS</td></tr> </table> <p> <h2>STATION DESCRIPTION </h2> <p>DESCRIBED BY NATIONAL GEODETIC SURVEY 1988 18.9 KM (11.75 MI) SOUTHWESTERLY ALONG STATE HIGHWAY 255 FROM THE JUNCTION WITH U.S. HIGHWAY 101 IN ARCATA, AT THE U.S. COAST GUARD STATION, 16.5 M (54.1 FT) NORTHWEST OF THE NORTH CORNER OF THE MOST NORTHEASTERLY ONE OF THREE APARTMENT COMPLEXS, 8.3 M (27.2 FT) EAST-SOUTHEAST OF THE CENTER OF THE ENTRANCE ROAD, 3.7 M (12.1 FT) EAST OF A METAL STREET LIGHT POLE, AND LEVEL WITH THE ROAD. NOTE--THE DISK IS 0.22 M (0.7 FT) BELOW THE GROUND SURFACE AND IS ENCASED IN A 5-INCH PVC PIPE. LV0635 941 8767 E TIDAL http://www.geocaching.com/mark/details.asp?PID=LV0635 941 8767 E TIDAL Geocache Geocache 941 8767 E TIDAL NOS NOS Unknown Cache Regular 1 1 United States California NGS Datasheet <b> TIDAL BM </b> This is a Tidal Bench Mark. <br> <h1>941 8767 E TIDAL</h1> <b> PID </b> LV0635 <br> <b> STATE/COUNTY</b> CA/HUMBOLDT <br> <b> USGS QUAD </b> EUREKA (1972) <br> <p> <h2>Current Survey Control</h2> <hr> <b> NAD 83(1986)</b> 40 46 00. (N) 124 13 09. (W) SCALED <br> <b> NAVD 88 </b> 3.592 (meters) 11.78 (feet) ADJUSTED <br> <hr> <b> GEOID HEIGHT</b> -30.79 (meters) GEOID03 <br> <b> DYNAMIC HT </b> 3.591 (meters) 11.78 (feet) COMP <br> <b> MODELED GRAV</b> 980,203.6 (mgal) NAVD 88 <br> <p> <b> VERT ORDER </b> FIRST CLASS II <br> <p>The horizontal coordinates were scaled from a topographic map and have an estimated accuracy of +/- 6 seconds. <p>The orthometric height was determined by differential leveling and adjusted by the National Geodetic Survey in June 1991. <p>This Tidal Bench Mark is designated as VM 1724 by the Center for Operational Oceanographic Products and Services. <p>The geoid height was determined by GEOID03. <p>The dynamic height is computed by dividing the NAVD 88 geopotential number by the normal gravity value computed on the Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45 degrees latitude (g = 980.6199 gals.). <p>The modeled gravity was interpolated from observed gravity values. <p> <table border=1><tr><td> </td><td> North </td><td> East </td><td> Units</td><td> Estimated Accuracy</td></tr><tr><td>SPC CA 1 </td><td> 661,530. </td><td> 1,812,670. </td><td> MT</td><td> (+/- 180 meters Scaled)</td></tr> </table> <p> <h2>Superseded Survey Control</h2> <p> NGVD 29 (12/02/92) 2.569 (m) 8.43 (f) ADJUSTED 1 2 <br> <p>Superseded values are not recommended for survey control. NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums. See file dsdata.txt to determine how the superseded data were derived. <p> <h2>Marker Information</h2>U.S. NATIONAL GRID SPATIAL ADDRESS: 10TCL971135(NAD 83) <br>MARKER: DJ = TIDAL STATION DISK <br>SETTING: 35 = SET IN A MAT FOUNDATION OR CONCRETE SLAB OTHER THAN <br>WITH SETTING: PAVEMENT <br>SP_SET: CONCRETE PAD <br>STAMPING: 8767 E 1983 <br>MARK LOGO: NOS <br>MAGNETIC: N = NO MAGNETIC MATERIAL <br>STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO <br>STABILITY: SURFACE MOTION <br> </table> <p> <h2>History</h2><table border=1><tr><td>Date </td><td>Condition </td><td>Report By</td></tr><tr><td>1983 </td><td>MONUMENTED </td><td>NOS</td></tr><tr><td>19880220</td><td>GOOD </td><td>NGS</td></tr> </table> <p> <h2>STATION DESCRIPTION </h2> <p>DESCRIBED BY NATIONAL GEODETIC SURVEY 1988 19.1 KM (11.85 MI) SOUTHWESTERLY ALONG STATE HIGHWAY 255 FROM THE JUNCTION WITH U.S. HIGHWAY 101 IN ARCATA, IN THE NORTH CORNER OF A 10 BY 10 FOOT CONCRETE PAD OVER A FUEL STORAGE TANK, 49.6 M (162.7 FT) WEST OF THE WEST CORNER OF THE U.S. COAST GUARD STATION, 14.3 M (46.9 FT) EAST OF THE SOUTH CORNER OF THE MOST SOUTHWESTERLY 1 OF 2 PARKING LOTS, 6.5 M (21.3 FT) SOUTHEAST OF THE SOUTHEAST CURB OF THE PARKING LOT, 4.3 M (14.1 FT) NORTHEAST OF A FENCE, AND LEVEL WITH THE GROUND SURFACE. LV0636 941 8767 F TIDAL http://www.geocaching.com/mark/details.asp?PID=LV0636 941 8767 F TIDAL Geocache Geocache 941 8767 F TIDAL NOS NOS Unknown Cache Regular 1 1 United States California NGS Datasheet <b> TIDAL BM </b> This is a Tidal Bench Mark. <br> <h1>941 8767 F TIDAL</h1> <b> PID </b> LV0636 <br> <b> STATE/COUNTY</b> CA/HUMBOLDT <br> <b> USGS QUAD </b> EUREKA (1972) <br> <p> <h2>Current Survey Control</h2> <hr> <b> NAD 83(1986)</b> 40 45 58. (N) 124 13 07. (W) SCALED <br> <b> NAVD 88 </b> 4.129 (meters) 13.55 (feet) ADJUSTED <br> <hr> <b> GEOID HEIGHT</b> -30.78 (meters) GEOID03 <br> <b> DYNAMIC HT </b> 4.127 (meters) 13.54 (feet) COMP <br> <b> MODELED GRAV</b> 980,203.4 (mgal) NAVD 88 <br> <p> <b> VERT ORDER </b> FIRST CLASS II <br> <p>The horizontal coordinates were scaled from a topographic map and have an estimated accuracy of +/- 6 seconds. <p>The orthometric height was determined by differential leveling and adjusted by the National Geodetic Survey in June 1991. <p>This Tidal Bench Mark is designated as VM 1725 by the Center for Operational Oceanographic Products and Services. <p>The geoid height was determined by GEOID03. <p>The dynamic height is computed by dividing the NAVD 88 geopotential number by the normal gravity value computed on the Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45 degrees latitude (g = 980.6199 gals.). <p>The modeled gravity was interpolated from observed gravity values. <p> <table border=1><tr><td> </td><td> North </td><td> East </td><td> Units</td><td> Estimated Accuracy</td></tr><tr><td>SPC CA 1 </td><td> 661,460. </td><td> 1,812,720. </td><td> MT</td><td> (+/- 180 meters Scaled)</td></tr> </table> <p> <h2>Superseded Survey Control</h2> <p> NGVD 29 (12/02/92) 3.106 (m) 10.19 (f) ADJUSTED 1 2 <br> <p>Superseded values are not recommended for survey control. NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums. See file dsdata.txt to determine how the superseded data were derived. <p> <h2>Marker Information</h2>U.S. NATIONAL GRID SPATIAL ADDRESS: 10TCL971135(NAD 83) <br>MARKER: DJ = TIDAL STATION DISK <br>SETTING: 30 = SET IN A LIGHT STRUCTURE <br>SP_SET: SEAWALL <br>STAMPING: 8767 F 1983 <br>MARK LOGO: NOS <br>MAGNETIC: N = NO MAGNETIC MATERIAL <br>STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL <br> </table> <p> <h2>History</h2><table border=1><tr><td>Date </td><td>Condition </td><td>Report By</td></tr><tr><td>1983 </td><td>MONUMENTED </td><td>NOS</td></tr><tr><td>19880220</td><td>GOOD </td><td>NGS</td></tr> </table> <p> <h2>STATION DESCRIPTION </h2> <p>DESCRIBED BY NATIONAL GEODETIC SURVEY 1988 19.1 KM (11.85 MI) SOUTHWESTERLY ALONG STATE HIGHWAY 255 FROM THE JUNCTION WITH U.S. HIGHWAY 101 IN ARCATA, IN A CONCRETE SEAWALL, 52.6 M (172.6 FT) SOUTHWEST OF THE SOUTH CORNER OF THE U.S. COAST GUARD STATION, 10.2 M (33.5 FT) EAST OF THE SOUTHEAST END OF A CHAIN LINK FENCE, 5.9 M (19.4 FT) SOUTHWEST OF THE SOUTHEAST END OF A WOODEN FENCE, AND 0.8 M (2.6 FT) ABOVE THE GROUND SURFACE. LV0633 941 8767 G TIDAL http://www.geocaching.com/mark/details.asp?PID=LV0633 941 8767 G TIDAL Geocache Geocache 941 8767 G TIDAL NOS NOS Unknown Cache Regular 1 1 United States California NGS Datasheet <b> TIDAL BM </b> This is a Tidal Bench Mark. <br> <h1>941 8767 G TIDAL</h1> <b> PID </b> LV0633 <br> <b> STATE/COUNTY</b> CA/HUMBOLDT <br> <b> USGS QUAD </b> EUREKA (1972) <br> <p> <h2>Current Survey Control</h2> <hr> <b> NAD 83(1986)</b> 40 46 01. (N) 124 13 04. (W) SCALED <br> <b> NAVD 88 </b> 4.184 (meters) 13.73 (feet) ADJUSTED <br> <hr> <b> GEOID HEIGHT</b> -30.78 (meters) GEOID03 <br> <b> DYNAMIC HT </b> 4.182 (meters) 13.72 (feet) COMP <br> <b> MODELED GRAV</b> 980,203.7 (mgal) NAVD 88 <br> <p> <b> VERT ORDER </b> FIRST CLASS II <br> <p>The horizontal coordinates were scaled from a topographic map and have an estimated accuracy of +/- 6 seconds. <p>The orthometric height was determined by differential leveling and adjusted by the National Geodetic Survey in June 1991. <p>This Tidal Bench Mark is designated as VM 1726 by the Center for Operational Oceanographic Products and Services. <p>The geoid height was determined by GEOID03. <p>The dynamic height is computed by dividing the NAVD 88 geopotential number by the normal gravity value computed on the Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45 degrees latitude (g = 980.6199 gals.). <p>The modeled gravity was interpolated from observed gravity values. <p> <table border=1><tr><td> </td><td> North </td><td> East </td><td> Units</td><td> Estimated Accuracy</td></tr><tr><td>SPC CA 1 </td><td> 661,550. </td><td> 1,812,790. </td><td> MT</td><td> (+/- 180 meters Scaled)</td></tr> </table> <p> <h2>Superseded Survey Control</h2> <p> NGVD 29 (12/02/92) 3.161 (m) 10.37 (f) ADJUSTED 1 2 <br> <p>Superseded values are not recommended for survey control. NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums. See file dsdata.txt to determine how the superseded data were derived. <p> <h2>Marker Information</h2>U.S. NATIONAL GRID SPATIAL ADDRESS: 10TCL972135(NAD 83) <br>MARKER: DJ = TIDAL STATION DISK <br>SETTING: 34 = SET IN THE FOOTINGS OF SMALL/MEDIUM STRUCTURES <br>SP_SET: FOUNDATION <br>STAMPING: 8767 G 1987 <br>MARK LOGO: NOS <br>MAGNETIC: N = NO MAGNETIC MATERIAL <br>STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO <br>STABILITY: SURFACE MOTION <br> </table> <p> <h2>History</h2><table border=1><tr><td>Date </td><td>Condition </td><td>Report By</td></tr><tr><td>1987 </td><td>MONUMENTED </td><td>NOS</td></tr><tr><td>19880220</td><td>GOOD </td><td>NGS</td></tr> </table> <p> <h2>STATION DESCRIPTION </h2> <p>DESCRIBED BY NATIONAL GEODETIC SURVEY 1988 19.1 KM (11.85 MI) SOUTHWESTERLY ALONG STATE HIGHWAY 255 FROM THE JUNCTION WITH U.S. HIGHWAY 101 IN ARCATA, IN TOP OF THE NORTH CORNER OF A 4.5 BY 5.5 FOOT CONCRETE BOX HOUSING VALVE CONTROLS FOR A WASTE TANK, 40.3 M (132.2 FT) EAST-NORTHEAST OF THE EAST CORNER OF THE U.S. COAST GUARD STATION, 13.5 M (44.3 FT) SOUTHEAST OF THE SOUTHEAST EDGE OF A CONCRETE SIDEWALK, 11.7 M (38.4 FT) NORTHWEST OF THE NORTHEAST END OF A SEAWALL, AND 0.1 M (0.3 FT) ABOVE THE LEVEL OF THE GROUND. LV0358 941 8767 TIDAL 1 http://www.geocaching.com/mark/details.asp?PID=LV0358 941 8767 TIDAL 1 Geocache Geocache 941 8767 TIDAL 1 CGS Unknown Cache Regular 1 1 United States California NGS Datasheet <b> TIDAL BM </b> This is a Tidal Bench Mark. <br> <h1>941 8767 TIDAL 1</h1> <b> PID </b> LV0358 <br> <b> STATE/COUNTY</b> CA/HUMBOLDT <br> <b> USGS QUAD </b> EUREKA (1972) <br> <p> <h2>Current Survey Control</h2> <hr> <b> NAD 83(1986)</b> 40 46 00. (N) 124 13 05. (W) SCALED <br> <b> NAVD 88 </b> 3.26 (+/-2cm) 10.7 (feet) VERTCON <br> <hr> <b> GEOID HEIGHT</b> -30.78 (meters) GEOID03 <br> <p> <b> VERT ORDER </b> FIRST CLASS II (See Below) <br> <p>The horizontal coordinates were scaled from a topographic map and have an estimated accuracy of +/- 6 seconds. <p>The NAVD 88 height was computed by applying the VERTCON shift value to the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.) The vertical order pertains to the NGVD 29 superseded value. <p>This Tidal Bench Mark is designated as VM 12548 by the Center for Operational Oceanographic Products and Services. <p>The geoid height was determined by GEOID03. <p> <table border=1><tr><td> </td><td> North </td><td> East </td><td> Units</td><td> Estimated Accuracy</td></tr><tr><td>SPC CA 1 </td><td> 661,520. </td><td> 1,812,770. </td><td> MT</td><td> (+/- 180 meters Scaled)</td></tr> </table> <p> <h2>Superseded Survey Control</h2> <p> NGVD 29 (??/??/??) 2.252 (m) 7.39 (f) ADJUSTED 1 2 <br> <p>Superseded values are not recommended for survey control. NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums. See file dsdata.txt to determine how the superseded data were derived. <p> <h2>Marker Information</h2>U.S. NATIONAL GRID SPATIAL ADDRESS: 10TCL971135(NAD 83) <br>MARKER: DJ = TIDAL STATION DISK <br>SETTING: 30 = SET IN A LIGHT STRUCTURE <br>SP_SET: SIDEWALK <br>STAMPING: 1 1929 <br>STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY <br> </table> <p> <h2>History</h2><table border=1><tr><td>Date </td><td>Condition </td><td>Report By</td></tr><tr><td>1929 </td><td>MONUMENTED </td><td>CGS</td></tr><tr><td>1967 </td><td>GOOD </td><td>NGS</td></tr><tr><td>19880417</td><td>MARK NOT FOUND </td><td>NGS</td></tr> </table> <p> <h2>STATION DESCRIPTION </h2> <p>DESCRIBED BY NATIONAL GEODETIC SURVEY 1967 11.6 MI SW FROM ARCATA. 11.55 MILES SOUTHWEST ALONG SAMOA ROAD FROM THE INTERSECTION OF H STREET AT ARCATA, AT THE COAST GUARD LIFEBOAT STATION, NEAR THE SOUTH END OF THE NORTH SPIT, IN THE TOP OF THE CONCRETE SIDEWALK ALONG THE NORTH SIDE OF THE STATION, 150 FEET NORTH-NORTHWEST OF THE NORTHEAST CORNER OF THE STATION, 132 FEET NORTH OF THE NORTH EDGE OF STEPS LEADING TO THE STATION, 110 FEET WEST-NORTHWEST OF BENCH MARK TIDAL 11 AND SEAWALL, ABOUT 5 FEET LOWER THAN THE BOTTOM STEP OF STATION. <p> <h2>STATION RECOVERY (1988) </h2> <p>RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1988 COAST GUARD PERSONNEL STATED THAT THE SIDEWALK HAD BEEN REPLACED AND THE MARK WAS DESTROYED. LV0359 941 8767 TIDAL 11 http://www.geocaching.com/mark/details.asp?PID=LV0359 941 8767 TIDAL 11 Geocache Geocache 941 8767 TIDAL 11 CGS CGS Unknown Cache Regular 1 1 United States California NGS Datasheet <b> FBN </b> This is a Federal Base Network Control Station. <br> <b> TIDAL BM </b> This is a Tidal Bench Mark. <br> <h1>941 8767 TIDAL 11</h1> <b> PID </b> LV0359 <br> <b> STATE/COUNTY</b> CA/HUMBOLDT <br> <b> USGS QUAD </b> EUREKA (1972) <br> <p> <h2>Current Survey Control</h2> <hr> <b> NAD 83(1998)</b> 40 46 00.90245(N) 124 13 03.45797(W) ADJUSTED <br> <b> NAVD 88 </b> 4.155 (meters) 13.63 (feet) ADJUSTED <br> <hr> <b> EPOCH DATE </b> 1998.50 <br> <b> X </b> -2,720,316.196 (meters) COMP <br> <b> Y </b> -4,000,175.944 (meters) COMP <br> <b> Z </b> 4,142,836.195 (meters) COMP <br> <b> LAPLACE CORR</b> 7.64 (seconds) DEFLEC99 <br> <b> ELLIP HEIGHT</b> -26.73 (meters) (04/06/00) GPS OBS <br> <b> GEOID HEIGHT</b> -30.78 (meters) GEOID03 <br> <b> DYNAMIC HT </b> 4.153 (meters) 13.63 (feet) COMP <br> <b> MODELED GRAV</b> 980,203.6 (mgal) NAVD 88 <br> <p> <b> HORZ ORDER </b> A <br> <b> VERT ORDER </b> FIRST CLASS II <br> <b> ELLP ORDER </b> THIRD CLASS I <br> <p>ITRF positions are available for this station. The horizontal coordinates were established by GPS observations and adjusted by the National Geodetic Survey in April 2000. This is a SPECIAL STATUS position. See SPECIAL STATUS under the DATUM ITEM on the data sheet items page. The horizontal coordinates are valid at the epoch date displayed above. The epoch date for horizontal control is a decimal equivalence of Year/Month/Day. <p>The orthometric height was determined by differential leveling and adjusted by the National Geodetic Survey in June 1991. WARNING-GPS observations at this control monument resulted in a GPS derived orthometric height which differed from the leveled height by more than one decimeter (0.1 meter). <p>This Tidal Bench Mark is designated as VM 1718 by the Center for Operational Oceanographic Products and Services. <p>The X, Y, and Z were computed from the position and the ellipsoidal ht. <p>The Laplace correction was computed from DEFLEC99 derived deflections. <p>The ellipsoidal height was determined by GPS observations and is referenced to NAD 83. <p>The geoid height was determined by GEOID03. <p>The dynamic height is computed by dividing the NAVD 88 geopotential number by the normal gravity value computed on the Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45 degrees latitude (g = 980.6199 gals.). <p>The modeled gravity was interpolated from observed gravity values. <p> <table border=1><tr><td> </td><td> North </td><td> East </td><td>Units</td><td>Scale Fact</td><td>r Converg.</td></tr><tr><td>SPC CA 1 </td><td> 661,549.971 1</td><td>812,803.375</td><td> MT </td><td>0.99989534</td><td> -1 ' 27 00.3"</td></tr><tr><td>SPC CA 1 </td><td>2,170,435.20 5</td><td>947,505.74 </td><td> sFT </td><td>0.99989534</td><td> -1 ' 27 00.3"</td></tr><tr><td>UTM 10 </td><td>4,513,596.294 </td><td>397,234.635</td><td> MT </td><td>0.99972998</td><td> -0 ' 47 42.6"</td></tr> </table> <p> <b> </b> Elev Factor x Scale Factor = Combined Factor <br> <b>SPC CA 1 </b> 1.00000419 x 0.99989534 = 0.99989953 <br> <b>UTM 10 </b> 1.00000419 x 0.99972998 = 0.99973417 <br> <p> <h2>Superseded Survey Control</h2> <p> NGVD 29 (12/02/92) 3.132 (m) 10.28 (f) ADJUSTED 1 2 <br> <p>Superseded values are not recommended for survey control. NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums. See file dsdata.txt to determine how the superseded data were derived. <p> <h2>Marker Information</h2>U.S. NATIONAL GRID SPATIAL ADDRESS: 10TCL9723513596(NAD 83) <br>MARKER: DB = BENCH MARK DISK <br>SETTING: 37 = SET IN A MASSIVE RETAINING WALL <br>SP_SET: MASSIVE RETAINING WALL/SEAWALL <br>STAMPING: 1940 NO 11 <br>MARK LOGO: CGS <br>PROJECTION: FLUSH <br>MAGNETIC: N = NO MAGNETIC MATERIAL <br>STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL <br>SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR <br>SATELLITE: SATELLITE OBSERVATIONS - August 24, 2003 <br> </table> <p> <h2>History</h2><table border=1><tr><td>Date </td><td>Condition </td><td>Report By</td></tr><tr><td>1940 </td><td>MONUMENTED </td><td>CGS</td></tr><tr><td>1967 </td><td>GOOD </td><td>NGS</td></tr><tr><td>19880216</td><td>GOOD </td><td>NGS</td></tr><tr><td>19980519</td><td>GOOD </td><td>NGS</td></tr><tr><td>20030824</td><td>GOOD </td><td>ORBITE</td></tr> </table> <p> <h2>STATION DESCRIPTION </h2> <p>DESCRIBED BY NATIONAL GEODETIC SURVEY 1967 11.6 MI SW FROM ARCATA. 11.55 MILES SOUTHWEST ALONG SAMOA ROAD FROM THE INTERSECTION OF H STREET AT ARCATA, AT THE COAST GUARD LIFEBOAT STATION, IN THE TOP AND 67 FEET SOUTH OF THE NORTH END OF A CONCRETE SEAWALL, 110 FEET EAST-SOUTHEAST OF BENCH MARK TIDAL 1, 99 FEET NORTHEAST OF THE NORTHEAST CORNER OF THE STATION BUILDING, 40 FEET NORTH OF BENCH MARK TIDAL 12. <p> <h2>STATION RECOVERY (1988) </h2> <p>RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1988 RECOVERED IN GOOD CONDITION. A NEW TO REACH FOLLOWS. 19.1 KM (11.85 MI) SOUTHWESTERLY ALONG STATE HIGHWAY 255 FROM THE JUNCTION WITH U.S. HIGHWAY 101 IN ARCATA. DELETE--110 FEET EAST-SOUTHEAST OF BENCH MARK TIDAL 1. <p> <h2>STATION RECOVERY (1998) </h2> <p>RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1998 (CSM) THE STATION IS LOCATED ABOUT 4.0 KM (2.50 MI) WEST OF EUREKA, AT THE U.S. COAST GUARD STATION HUMBOLDT BAY, BEHIND THE STATION HOUSE AND JUST WEST OF A 2 BAY BOATHOUSE, IN TOP OF A CONCRETE SEAWALL. OWNERSHIP--U.S. COAST GUARD, COMMANDING OFFICER USCG STATION HUMBOLDT BAY, SAMOA CA 95564-9999, PHONE 707-443-2213, FAX 707-269-2541. NOTE--CONTACT COMMANDING OFFICER OR OFFICER OF THE DAY 24 HOURS IN ADVANCE. TO REACH THE STATION FROM THE JUNCTION OF U.S. HIGHWAY 101 AND STATE HIGHWAY 255 (SAMOA EXIT) IN NORTH EUREKA, GO NORTHWESTERLY FOR 3.14 KM (1.95 MI) ON HIGHWAY 255 TO A T-JUNCTION. TURN LEFT, SOUTHWESTERLY FOR 7.64 KM (4.75 MI) ON THE NAVY BASE RD. TO A GATE AND CALL BOX AT THE ENTRANCE TO THE COAST GUARD STATION. CHECK IN WITH THE COMMANDING OFFICER OR OFFICER OF THE DAY. CONTINUE SOUTHWEST THROUGH GATE FOR 0.30 KM (0.20 MI) ON THE ROAD TO AN ASPHALT DRIVE ON THE LEFT LEADING TO A BOATHOUSE. TURN LEFT, SOUTHEAST FOR 0.14 KM (0.10 MI) ON THE DRIVE TO ITS END AND THE STATION ON THE RIGHT, IN TOP OF THE SEAWALL. STATION IS 12.5 M (41.0 FT) NORTH-NORTHEAST OF BENCH MARK NO 12 AT A BEND IN THE SEAWALL, 4.4 M (14.4 FT) SOUTHWEST OF THE SOUTH 1 OF 2 METAL PIPE HANDRAILS, 3.65 M (11.98 FT) SOUTH-SOUTHEAST OF THE SOUTH-SOUTHEAST EDGE OF THE DRIVE, 0.7 M (2.3 FT) WEST OF A FIBERGLASS WITNESS POST, 0.65 M (2.13 FT) SOUTH-SOUTHEAST OF A CONCRETE ELECTRIC JUNCTION BOX COVER CENTER, FLUSH WITH GROUND AND TOP OF THE SEAWALL. <p> <h2>STATION RECOVERY (2003) </h2> <p>RECOVERY NOTE BY ORBITECH INC 2003 (SHG) RECOVERED IN GOOD CONDITION. LV0360 941 8767 TIDAL 12 http://www.geocaching.com/mark/details.asp?PID=LV0360 941 8767 TIDAL 12 Geocache Geocache 941 8767 TIDAL 12 CGS CGS Unknown Cache Regular 1 1 United States California NGS Datasheet <b> TIDAL BM </b> This is a Tidal Bench Mark. <br> <h1>941 8767 TIDAL 12</h1> <b> PID </b> LV0360 <br> <b> STATE/COUNTY</b> CA/HUMBOLDT <br> <b> USGS QUAD </b> EUREKA (1972) <br> <p> <h2>Current Survey Control</h2> <hr> <b> NAD 83(1986)</b> 40 45 59. (N) 124 13 04. (W) SCALED <br> <b> NAVD 88 </b> 4.132 (meters) 13.56 (feet) ADJUSTED <br> <hr> <b> GEOID HEIGHT</b> -30.78 (meters) GEOID03 <br> <b> DYNAMIC HT </b> 4.130 (meters) 13.55 (feet) COMP <br> <b> MODELED GRAV</b> 980,203.5 (mgal) NAVD 88 <br> <p> <b> VERT ORDER </b> FIRST CLASS II <br> <p>The horizontal coordinates were scaled from a topographic map and have an estimated accuracy of +/- 6 seconds. <p>The orthometric height was determined by differential leveling and adjusted by the National Geodetic Survey in June 1991. <p>This Tidal Bench Mark is designated as VM 1719 by the Center for Operational Oceanographic Products and Services. <p>The geoid height was determined by GEOID03. <p>The dynamic height is computed by dividing the NAVD 88 geopotential number by the normal gravity value computed on the Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45 degrees latitude (g = 980.6199 gals.). <p>The modeled gravity was interpolated from observed gravity values. <p> <table border=1><tr><td> </td><td> North </td><td> East </td><td> Units</td><td> Estimated Accuracy</td></tr><tr><td>SPC CA 1 </td><td> 661,490. </td><td> 1,812,790. </td><td> MT</td><td> (+/- 180 meters Scaled)</td></tr> </table> <p> <h2>Superseded Survey Control</h2> <p> NGVD 29 (12/02/92) 3.109 (m) 10.20 (f) ADJUSTED 1 2 <br> <p>Superseded values are not recommended for survey control. NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums. See file dsdata.txt to determine how the superseded data were derived. <p> <h2>Marker Information</h2>U.S. NATIONAL GRID SPATIAL ADDRESS: 10TCL972135(NAD 83) <br>MARKER: DJ = TIDAL STATION DISK <br>SETTING: 37 = SET IN A MASSIVE RETAINING WALL <br>SP_SET: SEAWALL <br>STAMPING: NO 12 1962 <br>MARK LOGO: CGS <br>STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL <br> </table> <p> <h2>History</h2><table border=1><tr><td>Date </td><td>Condition </td><td>Report By</td></tr><tr><td>1962 </td><td>MONUMENTED </td><td>CGS</td></tr><tr><td>1967 </td><td>GOOD </td><td>NGS</td></tr><tr><td>19880216</td><td>GOOD </td><td>NGS</td></tr> </table> <p> <h2>STATION DESCRIPTION </h2> <p>DESCRIBED BY NATIONAL GEODETIC SURVEY 1967 11.6 MI SW FROM ARCATA. 11.55 MILES SOUTHWEST ALONG SAMOA ROAD FROM THE INTERSECTION OF H STREET AT ARCATA, AT THE COAST GUARD LIFEBOAT STATION, IN THE TOP OF THE CONCRETE SEAWALL, 69 FEET EAST-NORTHEAST OF THE NORTHEAST CORNER OF THE STATION BUILDING, 121 FEET NORTHEAST OF BENCH MARK TIDAL 9, 40 FEET SOUTH OF BENCH MARK TIDAL 11. <p> <h2>STATION RECOVERY (1988) </h2> <p>RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1988 RECOVERED IN GOOD CONDITION. A NEW TO REACH FOLLOWS. 19.1 KM (11.85 MI) SOUTHWESTERLY ALONG STATE HIGHWAY 255 FROM THE JUNCTION WITH U.S. HIGHWAY 101 IN ARCATA. LV0361 941 8767 TIDAL 9 http://www.geocaching.com/mark/details.asp?PID=LV0361 941 8767 TIDAL 9 Geocache Geocache 941 8767 TIDAL 9 CGS CGS Unknown Cache Regular 1 1 United States California NGS Datasheet <b> TIDAL BM </b> This is a Tidal Bench Mark. <br> <h1>941 8767 TIDAL 9</h1> <b> PID </b> LV0361 <br> <b> STATE/COUNTY</b> CA/HUMBOLDT <br> <b> USGS QUAD </b> EUREKA (1972) <br> <p> <h2>Current Survey Control</h2> <hr> <b> NAD 83(1986)</b> 40 45 59. (N) 124 13 05. (W) SCALED <br> <b> NAVD 88 </b> 4.669 (meters) 15.32 (feet) ADJUSTED <br> <hr> <b> GEOID HEIGHT</b> -30.78 (meters) GEOID03 <br> <b> DYNAMIC HT </b> 4.667 (meters) 15.31 (feet) COMP <br> <b> MODELED GRAV</b> 980,203.5 (mgal) NAVD 88 <br> <p> <b> VERT ORDER </b> FIRST CLASS II <br> <p>The horizontal coordinates were scaled from a topographic map and have an estimated accuracy of +/- 6 seconds. <p>The orthometric height was determined by differential leveling and adjusted by the National Geodetic Survey in June 1991. <p>This Tidal Bench Mark is designated as VM 1717 by the Center for Operational Oceanographic Products and Services. <p>The geoid height was determined by GEOID03. <p>The dynamic height is computed by dividing the NAVD 88 geopotential number by the normal gravity value computed on the Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45 degrees latitude (g = 980.6199 gals.). <p>The modeled gravity was interpolated from observed gravity values. <p> <table border=1><tr><td> </td><td> North </td><td> East </td><td> Units</td><td> Estimated Accuracy</td></tr><tr><td>SPC CA 1 </td><td> 661,490. </td><td> 1,812,770. </td><td> MT</td><td> (+/- 180 meters Scaled)</td></tr> </table> <p> <h2>Superseded Survey Control</h2> <p> NGVD 29 (12/02/92) 3.646 (m) 11.96 (f) ADJUSTED 1 2 <br> <p>Superseded values are not recommended for survey control. NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums. See file dsdata.txt to determine how the superseded data were derived. <p> <h2>Marker Information</h2>U.S. NATIONAL GRID SPATIAL ADDRESS: 10TCL971135(NAD 83) <br>MARKER: DJ = TIDAL STATION DISK <br>SETTING: 31 = SET IN A PAVEMENT SUCH AS STREET, SIDEWALK, CURB, ETC. <br>SP_SET: CONCRETE RAMP <br>STAMPING: NO 9 1937 <br>MARK LOGO: CGS <br>STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY <br> </table> <p> <h2>History</h2><table border=1><tr><td>Date </td><td>Condition </td><td>Report By</td></tr><tr><td>1937 </td><td>MONUMENTED </td><td>CGS</td></tr><tr><td>1967 </td><td>GOOD </td><td>NGS</td></tr><tr><td>19880216</td><td>GOOD </td><td>NGS</td></tr> </table> <p> <h2>STATION DESCRIPTION </h2> <p>DESCRIBED BY NATIONAL GEODETIC SURVEY 1967 11.6 MI SW FROM ARCATA. 11.55 MILES SOUTHWEST ALONG SAMOA ROAD FROM THE INTERSECTION OF H STREET AT ARCATA, AT THE COAST GUARD LIFEBOAT STATION, IN THE TOP OF THE SOUTHWEST CORNER OF THE CONCRETE RAMP FOR MARINE RAILWAY TO THE DOCK, 69 FEET SOUTH OF THE NORTHEAST CORNER OF THE STATION BUILDING, 121 FEET SOUTHWEST OF BENCH MARK TIDAL 12, 39 FEET WEST OF THE WEST END OF THE DOCK, 1.0 FOOT EAST OF A CORNER STONE MARKED AD 1936. <p> <h2>STATION RECOVERY (1988) </h2> <p>RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1988 RECOVERED IN GOOD CONDITION. A NEW TO REACH FOLLOWS. 19.1 KM (11.85 MI) SOUTHWESTERLY ALONG STATE HIGHWAY 255 FROM THE JUNCTION WITH U.S. HIGHWAY 101 IN ARCATA. LV0647 941 8778 A TIDAL http://www.geocaching.com/mark/details.asp?PID=LV0647 941 8778 A TIDAL Geocache Geocache 941 8778 A TIDAL NOS NGS Unknown Cache Regular 1 1 United States California NGS Datasheet <b> TIDAL BM </b> This is a Tidal Bench Mark. <br> <h1>941 8778 A TIDAL</h1> <b> PID </b> LV0647 <br> <b> STATE/COUNTY</b> CA/HUMBOLDT <br> <b> USGS QUAD </b> EUREKA (1972) <br> <p> <h2>Current Survey Control</h2> <hr> <b> NAD 83(1986)</b> 40 46 37. (N) 124 11 37. (W) SCALED <br> <b> NAVD 88 </b> 2.940 (meters) 9.65 (feet) ADJUSTED <br> <hr> <b> GEOID HEIGHT</b> -30.66 (meters) GEOID03 <br> <b> DYNAMIC HT </b> 2.939 (meters) 9.64 (feet) COMP <br> <b> MODELED GRAV</b> 980,206.3 (mgal) NAVD 88 <br> <p> <b> VERT ORDER </b> FIRST CLASS II <br> <p>The horizontal coordinates were scaled from a topographic map and have an estimated accuracy of +/- 6 seconds. <p>The orthometric height was determined by differential leveling and adjusted by the National Geodetic Survey in June 1991. <p>This Tidal Bench Mark is designated as VM 8723 by the Center for Operational Oceanographic Products and Services. <p>The geoid height was determined by GEOID03. <p>The dynamic height is computed by dividing the NAVD 88 geopotential number by the normal gravity value computed on the Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45 degrees latitude (g = 980.6199 gals.). <p>The modeled gravity was interpolated from observed gravity values. <p> <table border=1><tr><td> </td><td> North </td><td> East </td><td> Units</td><td> Estimated Accuracy</td></tr><tr><td>SPC CA 1 </td><td> 662,610. </td><td> 1,814,860. </td><td> MT</td><td> (+/- 180 meters Scaled)</td></tr> </table> <p> <h2>Superseded Survey Control</h2> <p> NGVD 29 (12/02/92) 1.937 (m) 6.36 (f) ADJUSTED 1 2 <br> <p>Superseded values are not recommended for survey control. NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums. See file dsdata.txt to determine how the superseded data were derived. <p> <h2>Marker Information</h2>U.S. NATIONAL GRID SPATIAL ADDRESS: 10TCL992146(NAD 83) <br>MARKER: DJ = TIDAL STATION DISK <br>SETTING: 46 = COPPER-CLAD STEEL ROD W/O SLEEVE (10 FT.+) <br>SP_SET: COPPER-CLAD STEEL ROD <br>STAMPING: 8778 A 1977 <br>MARK LOGO: NGS <br>PROJECTION: PROJECTING 30 CENTIMETERS <br>MAGNETIC: N = NO MAGNETIC MATERIAL <br>STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL <br>ROD/PIPE-DEPTH: 9.8 meters <br> </table> <p> <h2>History</h2><table border=1><tr><td>Date </td><td>Condition </td><td>Report By</td></tr><tr><td>1977 </td><td>MONUMENTED </td><td>NOS</td></tr><tr><td>19880221</td><td>GOOD </td><td>NGS</td></tr><tr><td>19930401</td><td>MARK NOT FOUND </td><td>LOCSUR</td></tr> </table> <p> <h2>STATION DESCRIPTION </h2> <p>DESCRIBED BY NATIONAL GEODETIC SURVEY 1988 IN EUREKA, AT THE INTERSECTION OF TRUESDALE AVENUE AND HOWELL STREET, 110.0 M (360.9 FT) NORTH OF THE CENTER OF THE AVENUE, 21.6 M (70.9 FT) WEST OF THE CENTER OF THE STREET, 21.5 M (70.5 FT) SOUTH OF THE CENTER OF THE ENTRANCE ROAD TO THE STANDARD OIL BULK PLANT, 2.2 M (7.2 FT) WEST OF THE NEAR RAIL OF THE NORTHWESTERN PACIFIC RAILROAD, 0.8 M (2.6 FT) EAST OF A UTILITY POLE, AND LEVEL WITH THE TRACKS. <p> <h2>STATION RECOVERY (1993) </h2> <p>RECOVERY NOTE BY LOCAL SURVEYOR (INDIVIDUAL OR FIRM) 1993 (JSE) N404638 W1241138 ELEV = 2M ID NO. LV0647 QUAD 401241 COPPER-CLAD STEEL ROD 8778 A 1977 COND = G LATEST OBS DATE = 19880916 IN EUREKA, AT THE INTERSECTION OF TRUESDALE AVENUE AND HOWELL STREET, 110.0 M (360.9 FT) NORTH OF THE CENTER OF THE AVENUE, 21.6MWEST OF THE CENTER OF THE STREET, 21.5 M (70.5 FT) SOUTH OF THE CENTER OF THE ENTRANCE ROAD TO THE STANDARD OIL BULK PLANT, 2.2 M (7.2 FT) WEST OF THE NEAR RAIL OF THE NORTHWESTERN PACIFIC RAILROAD, 0.8 M (2.6 FT) EAST OF A UTILITY POLE, AND LEVEL WITH THE TRACKS. LV0643 941 8799 A TIDAL http://www.geocaching.com/mark/details.asp?PID=LV0643 941 8799 A TIDAL Geocache Geocache 941 8799 A TIDAL NOS NOS Unknown Cache Regular 1 1 United States California NGS Datasheet <b> TIDAL BM </b> This is a Tidal Bench Mark. <br> <h1>941 8799 A TIDAL</h1> <b> PID </b> LV0643 <br> <b> STATE/COUNTY</b> CA/HUMBOLDT <br> <b> USGS QUAD </b> ARCATA SOUTH (1972) <br> <p> <h2>Current Survey Control</h2> <hr> <b> NAD 83(1986)</b> 40 47 42. (N) 124 07 16. (W) SCALED <br> <b> NAVD 88 </b> 2.772 (meters) 9.09 (feet) ADJUSTED <br> <hr> <b> GEOID HEIGHT</b> -30.33 (meters) GEOID03 <br> <b> DYNAMIC HT </b> 2.771 (meters) 9.09 (feet) COMP <br> <b> MODELED GRAV</b> 980,204.8 (mgal) NAVD 88 <br> <p> <b> VERT ORDER </b> FIRST CLASS II <br> <p>The horizontal coordinates were scaled from a topographic map and have an estimated accuracy of +/- 6 seconds. <p>The orthometric height was determined by differential leveling and adjusted by the National Geodetic Survey in June 1991. <p>This Tidal Bench Mark is designated as VM 8728 by the Center for Operational Oceanographic Products and Services. <p>The geoid height was determined by GEOID03. <p>The dynamic height is computed by dividing the NAVD 88 geopotential number by the normal gravity value computed on the Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45 degrees latitude (g = 980.6199 gals.). <p>The modeled gravity was interpolated from observed gravity values. <p> <table border=1><tr><td> </td><td> North </td><td> East </td><td> Units</td><td> Estimated Accuracy</td></tr><tr><td>SPC CA 1 </td><td> 664,470. </td><td> 1,821,020. </td><td> MT</td><td> (+/- 180 meters Scaled)</td></tr> </table> <p> <h2>Superseded Survey Control</h2> <p> NGVD 29 (12/02/92) 1.762 (m) 5.78 (f) ADJUSTED 1 2 <br> <p>Superseded values are not recommended for survey control. NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums. See file dsdata.txt to determine how the superseded data were derived. <p> <h2>Marker Information</h2>U.S. NATIONAL GRID SPATIAL ADDRESS: 10TDL054166(NAD 83) <br>MARKER: DJ = TIDAL STATION DISK <br>SETTING: 46 = COPPER-CLAD STEEL ROD W/O SLEEVE (10 FT.+) <br>SP_SET: COPPER-CLAD STEEL ROD <br>STAMPING: 8799 A 1978 <br>MARK LOGO: NOS <br>PROJECTION: PROJECTING 5 CENTIMETERS <br>MAGNETIC: N = NO MAGNETIC MATERIAL <br>STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL <br>ROD/PIPE-DEPTH: 17.1 meters <br> </table> <p> <h2>History</h2><table border=1><tr><td>Date </td><td>Condition </td><td>Report By</td></tr><tr><td>1978 </td><td>MONUMENTED </td><td>NOS</td></tr><tr><td>19880221</td><td>GOOD </td><td>NGS</td></tr> </table> <p> <h2>STATION DESCRIPTION </h2> <p>DESCRIBED BY NATIONAL GEODETIC SURVEY 1988 0.8 KM (0.50 MI) EASTERLY ALONG U.S. HIGHWAY 101 FROM THE POST OFFICE IN EUREKA, THENCE 1.8 KM (1.10 MI) SOUTHEASTERLY ALONG MYRTLE AVENUE, THENCE 1.3 KM (0.80 MI) EASTERLY ALONG PARK STREET, 62.0 M (203.4 FT) SOUTHWEST OF THE SOUTHWEST CORNER OF A WOODEN BRIDGE SPANNING FRESHWATER SLOUGH, 4.1 M (13.5 FT) NORTH OF THE CENTER OF THE STREET, 0.6 M (2.0 FT) WEST OF A FENCE CORNER, AND LEVEL WITH THE STREET. LV0642 941 8799 E TIDAL http://www.geocaching.com/mark/details.asp?PID=LV0642 941 8799 E TIDAL Geocache Geocache 941 8799 E TIDAL NOS NOS Unknown Cache Regular 1 1 United States California NGS Datasheet <b> TIDAL BM </b> This is a Tidal Bench Mark. <br> <h1>941 8799 E TIDAL</h1> <b> PID </b> LV0642 <br> <b> STATE/COUNTY</b> CA/HUMBOLDT <br> <b> USGS QUAD </b> EUREKA (1972) <br> <p> <h2>Current Survey Control</h2> <hr> <b> NAD 83(1986)</b> 40 47 41. (N) 124 07 34. (W) SCALED <br> <b> NAVD 88 </b> 20.504 (meters) 67.27 (feet) ADJUSTED <br> <hr> <b> GEOID HEIGHT</b> -30.35 (meters) GEOID03 <br> <b> DYNAMIC HT </b> 20.495 (meters) 67.24 (feet) COMP <br> <b> MODELED GRAV</b> 980,204.4 (mgal) NAVD 88 <br> <p> <b> VERT ORDER </b> FIRST CLASS II <br> <p>The horizontal coordinates were scaled from a topographic map and have an estimated accuracy of +/- 6 seconds. <p>The orthometric height was determined by differential leveling and adjusted by the National Geodetic Survey in June 1991. <p>This Tidal Bench Mark is designated as VM 8731 by the Center for Operational Oceanographic Products and Services. <p>The geoid height was determined by GEOID03. <p>The dynamic height is computed by dividing the NAVD 88 geopotential number by the normal gravity value computed on the Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45 degrees latitude (g = 980.6199 gals.). <p>The modeled gravity was interpolated from observed gravity values. <p> <table border=1><tr><td> </td><td> North </td><td> East </td><td> Units</td><td> Estimated Accuracy</td></tr><tr><td>SPC CA 1 </td><td> 664,450. </td><td> 1,820,600. </td><td> MT</td><td> (+/- 180 meters Scaled)</td></tr> </table> <p> <h2>Superseded Survey Control</h2> <p> NGVD 29 (12/02/92) 19.493 (m) 63.95 (f) ADJUSTED 1 2 <br> <p>Superseded values are not recommended for survey control. NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums. See file dsdata.txt to determine how the superseded data were derived. <p> <h2>Marker Information</h2>U.S. NATIONAL GRID SPATIAL ADDRESS: 10TDL049165(NAD 83) <br>MARKER: DJ = TIDAL STATION DISK <br>SETTING: 31 = SET IN A PAVEMENT SUCH AS STREET, SIDEWALK, CURB, ETC. <br>SP_SET: SIDEWALK <br>STAMPING: 8799 E 1978 <br>MARK LOGO: NOS <br>MAGNETIC: N = NO MAGNETIC MATERIAL <br>STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY <br> </table> <p> <h2>History</h2><table border=1><tr><td>Date </td><td>Condition </td><td>Report By</td></tr><tr><td>1978 </td><td>MONUMENTED </td><td>NOS</td></tr><tr><td>19880221</td><td>GOOD </td><td>NGS</td></tr> </table> <p> <h2>STATION DESCRIPTION </h2> <p>DESCRIBED BY NATIONAL GEODETIC SURVEY 1988 IN EUREKA, AT THE INTERSECTION OF PARK AND QUAKER STREETS, IN THE SIDEWALK AT THE SOUTHWEST CORNER OF THE INTERSECTION, 8.0 M (26.2 FT) WEST OF THE CENTERLINE OF QUAKER STREET, 7.9 M (25.9 FT) SOUTH OF THE CENTERLINE OF PARK STREET, 3.7 M (12.1 FT) EAST OF A FIRE HYDRANT, AND 0.15 M (0.5 FT) ABOVE THE LEVEL OF THE STREETS. LV0279 941 8801 TIDAL 1 http://www.geocaching.com/mark/details.asp?PID=LV0279 941 8801 TIDAL 1 Geocache Geocache 941 8801 TIDAL 1 CGS CGS Unknown Cache Regular 1 1 United States California NGS Datasheet <b> TIDAL BM </b> This is a Tidal Bench Mark. <br> <h1>941 8801 TIDAL 1</h1> <b> PID </b> LV0279 <br> <b> STATE/COUNTY</b> CA/HUMBOLDT <br> <b> USGS QUAD </b> EUREKA (1972) <br> <p> <h2>Current Survey Control</h2> <hr> <b> NAD 83(1986)</b> 40 48 09. (N) 124 10 01. (W) SCALED <br> <b> NAVD 88 </b> 5.686 (meters) 18.65 (feet) ADJUSTED <br> <hr> <b> GEOID HEIGHT</b> -30.52 (meters) GEOID03 <br> <b> DYNAMIC HT </b> 5.684 (meters) 18.65 (feet) COMP <br> <b> MODELED GRAV</b> 980,207.5 (mgal) NAVD 88 <br> <p> <b> VERT ORDER </b> FIRST CLASS II <br> <p>The horizontal coordinates were scaled from a topographic map and have an estimated accuracy of +/- 6 seconds. <p>The orthometric height was determined by differential leveling and adjusted by the National Geodetic Survey in June 1991. <p>This Tidal Bench Mark is designated as VM 8732 by the Center for Operational Oceanographic Products and Services. <p>The geoid height was determined by GEOID03. <p>The dynamic height is computed by dividing the NAVD 88 geopotential number by the normal gravity value computed on the Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45 degrees latitude (g = 980.6199 gals.). <p>The modeled gravity was interpolated from observed gravity values. <p> <table border=1><tr><td> </td><td> North </td><td> East </td><td> Units</td><td> Estimated Accuracy</td></tr><tr><td>SPC CA 1 </td><td> 665,390. </td><td> 1,817,180. </td><td> MT</td><td> (+/- 180 meters Scaled)</td></tr> </table> <p> <h2>Superseded Survey Control</h2> <p> NGVD 29 (12/02/92) 4.677 (m) 15.34 (f) ADJUSTED 1 2 <br> <p>Superseded values are not recommended for survey control. NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums. See file dsdata.txt to determine how the superseded data were derived. <p> <h2>Marker Information</h2>U.S. NATIONAL GRID SPATIAL ADDRESS: 10TDL015174(NAD 83) <br>MARKER: DJ = TIDAL STATION DISK <br>SETTING: 36 = SET IN A MASSIVE STRUCTURE <br>SP_SET: PILLAR <br>STAMPING: BM 1 1921 14.911 <br>MARK LOGO: CGS <br>STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL <br> </table> <p> <h2>History</h2><table border=1><tr><td>Date </td><td>Condition </td><td>Report By</td></tr><tr><td>1921 </td><td>MONUMENTED </td><td>CGS</td></tr><tr><td>1967 </td><td>GOOD </td><td>NGS</td></tr><tr><td>19880221</td><td>GOOD </td><td>NGS</td></tr> </table> <p> <h2>STATION DESCRIPTION </h2> <p>DESCRIBED BY NATIONAL GEODETIC SURVEY 1967 AT EUREKA. AT EUREKA, AT THE WEST CORNER OF THE INTERSECTION OF 4TH STREET (U.S. HIGHWAY 101) AND E STREET, IN THE TOP OF THE CONCRETE BASE FOR A 24-INCH PILLAR AT THE NORTHEAST ENTRANCE TO THE COMERCE BUILDING AT 350 E STREET, 41 FEET NORTHWEST OF THE NORTHWEST CURB OF 4TH STREET, 10 FEET SOUTHWEST OF THE SOUTHWEST CURB OF E STREET, 7 FEET NORTHWEST OF THE CENTER OF THE ENTRANCE TO THE BUILDING, AND ABOUT 2 1/2 FEET ABOVE THE SIDEWALK. <p> <h2>STATION RECOVERY (1988) </h2> <p>RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1988 RECOVERED IN GOOD CONDITION. LV0281 941 8801 TIDAL 2 http://www.geocaching.com/mark/details.asp?PID=LV0281 941 8801 TIDAL 2 Geocache Geocache 941 8801 TIDAL 2 CGS CGS Unknown Cache Regular 1 1 United States California NGS Datasheet <b> TIDAL BM </b> This is a Tidal Bench Mark. <br> <h1>941 8801 TIDAL 2</h1> <b> PID </b> LV0281 <br> <b> STATE/COUNTY</b> CA/HUMBOLDT <br> <b> USGS QUAD </b> EUREKA (1972) <br> <p> <h2>Current Survey Control</h2> <hr> <b> NAD 83(1986)</b> 40 48 05. (N) 124 09 50. (W) SCALED <br> <b> NAVD 88 </b> 14.386 (meters) 47.20 (feet) ADJUSTED <br> <hr> <b> GEOID HEIGHT</b> -30.51 (meters) GEOID03 <br> <b> DYNAMIC HT </b> 14.380 (meters) 47.18 (feet) COMP <br> <b> MODELED GRAV</b> 980,207.0 (mgal) NAVD 88 <br> <p> <b> VERT ORDER </b> FIRST CLASS II <br> <p>The horizontal coordinates were scaled from a topographic map and have an estimated accuracy of +/- 6 seconds. <p>The orthometric height was determined by differential leveling and adjusted by the National Geodetic Survey in June 1991. <p>This Tidal Bench Mark is designated as VM 8733 by the Center for Operational Oceanographic Products and Services. <p>The geoid height was determined by GEOID03. <p>The dynamic height is computed by dividing the NAVD 88 geopotential number by the normal gravity value computed on the Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45 degrees latitude (g = 980.6199 gals.). <p>The modeled gravity was interpolated from observed gravity values. <p> <table border=1><tr><td> </td><td> North </td><td> East </td><td> Units</td><td> Estimated Accuracy</td></tr><tr><td>SPC CA 1 </td><td> 665,260. </td><td> 1,817,430. </td><td> MT</td><td> (+/- 180 meters Scaled)</td></tr> </table> <p> <h2>Superseded Survey Control</h2> <p> NGVD 29 (12/02/92) 13.377 (m) 43.89 (f) ADJUSTED 1 2 <br> <p>Superseded values are not recommended for survey control. NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums. See file dsdata.txt to determine how the superseded data were derived. <p> <h2>Marker Information</h2>U.S. NATIONAL GRID SPATIAL ADDRESS: 10TDL018173(NAD 83) <br>MARKER: DJ = TIDAL STATION DISK <br>SETTING: 32 = SET IN A RETAINING WALL OR CONCRETE LEDGE <br>SP_SET: RETAINING WALL <br>STAMPING: BM 2 1921 43.422 <br>MARK LOGO: CGS <br>STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO <br>STABILITY: SURFACE MOTION <br> </table> <p> <h2>History</h2><table border=1><tr><td>Date </td><td>Condition </td><td>Report By</td></tr><tr><td>1921 </td><td>MONUMENTED </td><td>CGS</td></tr><tr><td>1967 </td><td>GOOD </td><td>NGS</td></tr><tr><td>1974 </td><td>GOOD </td><td>NGS</td></tr><tr><td>19880221</td><td>GOOD </td><td>NGS</td></tr> </table> <p> <h2>STATION DESCRIPTION </h2> <p>DESCRIBED BY NATIONAL GEODETIC SURVEY 1967 AT EUREKA. AT EUREKA, ALONG 5TH STREET BETWEEN G AND H STREETS, ALONG THE SOUTH SIDE OF THE POST OFFICE BUILDING, IN THE TOP OF THE NORTH END OF A CONCRETE RETAINING WALL AROUND THE BASEMENT ENTRANCE, ABOUT 120 FEET WEST OF THE WEST CURB OF H STREET, 80 FEET SOUTH OF THE SOUTH CURB OF 5TH STREET, 33 FEET WEST OF THE WEST OF THE WEST EDGE OF A LOADING PLATFORM, 0.2 FOOT WEST OF THE WEST WALL OF BUILDING, AND ABOUT 8 FEET HIGHER THAN THE STREET. <p> <h2>STATION RECOVERY (1974) </h2> <p>RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1974 RECOVERED IN GOOD CONDITION. <p> <h2>STATION RECOVERY (1988) </h2> <p>RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1988 RECOVERED IN GOOD CONDITION. LV0645 941 8801 TIDAL BOLT http://www.geocaching.com/mark/details.asp?PID=LV0645 941 8801 TIDAL BOLT Geocache Geocache 941 8801 TIDAL BOLT CA1220 Unknown Cache Regular 1 1 United States California NGS Datasheet <h1>941 8801 TIDAL BOLT</h1> <b> PID </b> LV0645 <br> <b> STATE/COUNTY</b> CA/HUMBOLDT <br> <b> USGS QUAD </b> EUREKA (1972) <br> <p> <h2>Current Survey Control</h2> <hr> <b> NAD 83(1986)</b> 40 48 14. (N) 124 10 01. (W) SCALED <br> <b> NAVD 88 </b> 4.447 (meters) 14.59 (feet) ADJUSTED <br> <hr> <b> GEOID HEIGHT</b> -30.52 (meters) GEOID03 <br> <b> DYNAMIC HT </b> 4.445 (meters) 14.58 (feet) COMP <br> <b> MODELED GRAV</b> 980,207.7 (mgal) NAVD 88 <br> <p> <b> VERT ORDER </b> FIRST CLASS II <br> <p>The horizontal coordinates were scaled from a topographic map and have an estimated accuracy of +/- 6 seconds. <p>The orthometric height was determined by differential leveling and adjusted by the National Geodetic Survey in June 1991. <p>The geoid height was determined by GEOID03. <p>The dynamic height is computed by dividing the NAVD 88 geopotential number by the normal gravity value computed on the Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45 degrees latitude (g = 980.6199 gals.). <p>The modeled gravity was interpolated from observed gravity values. <p> <table border=1><tr><td> </td><td> North </td><td> East </td><td> Units</td><td> Estimated Accuracy</td></tr><tr><td>SPC CA 1 </td><td> 665,550. </td><td> 1,817,180. </td><td> MT</td><td> (+/- 180 meters Scaled)</td></tr> </table> <p> <h2>Superseded Survey Control</h2> <p> NGVD 29 (12/02/92) 3.438 (m) 11.28 (f) ADJUSTED 1 2 <br> <p>Superseded values are not recommended for survey control. NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums. See file dsdata.txt to determine how the superseded data were derived. <p> <h2>Marker Information</h2>U.S. NATIONAL GRID SPATIAL ADDRESS: 10TDL015176(NAD 83) <br>MARKER: B = BOLT <br>SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT <br>SP_SET: CONCRETE POST <br>MAGNETIC: N = NO MAGNETIC MATERIAL <br>STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO <br>STABILITY: SURFACE MOTION <br> </table> <p> <h2>History</h2><table border=1><tr><td>Date </td><td>Condition </td><td>Report By</td></tr><tr><td>UNK </td><td>MONUMENTED </td><td>CA1220</td></tr><tr><td>19880221</td><td>GOOD </td><td>NGS</td></tr> </table> <p> <h2>STATION DESCRIPTION </h2> <p>DESCRIBED BY NATIONAL GEODETIC SURVEY 1988 IN EUREKA, AT THE CENTER OF THE INTERSECTION OF THIRD AND E STREETS, A COPPER BOLT IN THE CENTER OF A CONCRETE MONUMENT THAT IS 0.39 M (1.3 FT) BELOW THE STREET SURFACE, ACCESS TO WHICH IS THROUGH AN 8-INCH STEEL MANHOLE COVER INSCRIBED MONUMENT. LV0640 941 8802 A TIDAL http://www.geocaching.com/mark/details.asp?PID=LV0640 941 8802 A TIDAL Geocache Geocache 941 8802 A TIDAL NOS NOS Unknown Cache Regular 1 1 United States California NGS Datasheet <b> TIDAL BM </b> This is a Tidal Bench Mark. <br> <h1>941 8802 A TIDAL</h1> <b> PID </b> LV0640 <br> <b> STATE/COUNTY</b> CA/HUMBOLDT <br> <b> USGS QUAD </b> EUREKA (1972) <br> <p> <h2>Current Survey Control</h2> <hr> <b> NAD 83(1986)</b> 40 48 24. (N) 124 08 34. (W) SCALED <br> <b> NAVD 88 </b> 2.851 (meters) 9.35 (feet) ADJUSTED <br> <hr> <b> GEOID HEIGHT</b> -30.41 (meters) GEOID03 <br> <b> DYNAMIC HT </b> 2.850 (meters) 9.35 (feet) COMP <br> <b> MODELED GRAV</b> 980,206.7 (mgal) NAVD 88 <br> <p> <b> VERT ORDER </b> FIRST CLASS II <br> <p>The horizontal coordinates were scaled from a topographic map and have an estimated accuracy of +/- 6 seconds. <p>The orthometric height was determined by differential leveling and adjusted by the National Geodetic Survey in June 1991. <p>This Tidal Bench Mark is designated as VM 8738 by the Center for Operational Oceanographic Products and Services. <p>The geoid height was determined by GEOID03. <p>The dynamic height is computed by dividing the NAVD 88 geopotential number by the normal gravity value computed on the Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45 degrees latitude (g = 980.6199 gals.). <p>The modeled gravity was interpolated from observed gravity values. <p> <table border=1><tr><td> </td><td> North </td><td> East </td><td> Units</td><td> Estimated Accuracy</td></tr><tr><td>SPC CA 1 </td><td> 665,810. </td><td> 1,819,230. </td><td> MT</td><td> (+/- 180 meters Scaled)</td></tr> </table> <p> <h2>Superseded Survey Control</h2> <p> NGVD 29 (12/02/92) 1.839 (m) 6.03 (f) ADJUSTED 1 2 <br> <p>Superseded values are not recommended for survey control. NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums. See file dsdata.txt to determine how the superseded data were derived. <p> <h2>Marker Information</h2>U.S. NATIONAL GRID SPATIAL ADDRESS: 10TDL036179(NAD 83) <br>MARKER: DJ = TIDAL STATION DISK <br>SETTING: 38 = SET IN THE ABUTMENT OR PIER OF A LARGE BRIDGE <br>SP_SET: PIER <br>STAMPING: 8802 A 1978 <br>MARK LOGO: NOS <br>MAGNETIC: N = NO MAGNETIC MATERIAL <br>STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL <br> </table> <p> <h2>History</h2><table border=1><tr><td>Date </td><td>Condition </td><td>Report By</td></tr><tr><td>1978 </td><td>MONUMENTED </td><td>NOS</td></tr><tr><td>19880221</td><td>GOOD </td><td>NGS</td></tr> </table> <p> <h2>STATION DESCRIPTION </h2> <p>DESCRIBED BY NATIONAL GEODETIC SURVEY 1988 1.4 KM (0.85 MI) EASTERLY ALONG U.S. HIGHWAY 101 FROM THE POST OFFICE IN EUREKA, THENCE 0.3 KM (0.20 MI) NORTHERLY ALONG X STREET, THENCE 0.3 KM (0.20 MI) EASTERLY ALONG THE NORTHWESTERN PACIFIC RAILROAD, IN TOP OF AND 0.5 M (1.6 FT) NORTH OF THE SOUTH END OF THE WEST PIER AT THE END OF THE STEEL GIRDER PART OF THE RAILROAD BRIDGE SPANNING EUREKA SLOUGH, 35.5 M (116.5 FT) EAST OF THE WEST END OF THE BRIDGE, 2.1 M (6.9 FT) BELOW THE LEVEL OF THE TRACKS, AND 1.4 M (4.6 FT) SOUTH OF THE NEAR RAIL. LV0639 941 8802 B TIDAL http://www.geocaching.com/mark/details.asp?PID=LV0639 941 8802 B TIDAL Geocache Geocache 941 8802 B TIDAL NOS NOS Unknown Cache Regular 1 1 United States California NGS Datasheet <b> TIDAL BM </b> This is a Tidal Bench Mark. <br> <h1>941 8802 B TIDAL</h1> <b> PID </b> LV0639 <br> <b> STATE/COUNTY</b> CA/HUMBOLDT <br> <b> USGS QUAD </b> EUREKA (1972) <br> <p> <h2>Current Survey Control</h2> <hr> <b> NAD 83(1986)</b> 40 48 24. (N) 124 08 36. (W) SCALED <br> <b> NAVD 88 </b> 3.842 (meters) 12.61 (feet) ADJUSTED <br> <hr> <b> GEOID HEIGHT</b> -30.41 (meters) GEOID03 <br> <b> DYNAMIC HT </b> 3.840 (meters) 12.60 (feet) COMP <br> <b> MODELED GRAV</b> 980,206.7 (mgal) NAVD 88 <br> <p> <b> VERT ORDER </b> FIRST CLASS II <br> <p>The horizontal coordinates were scaled from a topographic map and have an estimated accuracy of +/- 6 seconds. <p>The orthometric height was determined by differential leveling and adjusted by the National Geodetic Survey in June 1991. <p>This Tidal Bench Mark is designated as VM 8739 by the Center for Operational Oceanographic Products and Services. <p>The geoid height was determined by GEOID03. <p>The dynamic height is computed by dividing the NAVD 88 geopotential number by the normal gravity value computed on the Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45 degrees latitude (g = 980.6199 gals.). <p>The modeled gravity was interpolated from observed gravity values. <p> <table border=1><tr><td> </td><td> North </td><td> East </td><td> Units</td><td> Estimated Accuracy</td></tr><tr><td>SPC CA 1 </td><td> 665,810. </td><td> 1,819,180. </td><td> MT</td><td> (+/- 180 meters Scaled)</td></tr> </table> <p> <h2>Superseded Survey Control</h2> <p> NGVD 29 (12/02/92) 2.830 (m) 9.28 (f) ADJUSTED 1 2 <br> <p>Superseded values are not recommended for survey control. NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums. See file dsdata.txt to determine how the superseded data were derived. <p> <h2>Marker Information</h2>U.S. NATIONAL GRID SPATIAL ADDRESS: 10TDL035179(NAD 83) <br>MARKER: DJ = TIDAL STATION DISK <br>SETTING: 48 = GALVANIZED STEEL ROD W/O SLEEVE (1O FT.+) <br>SP_SET: GALVANIZED STEEL ROD <br>STAMPING: 8802 B 1978 <br>MARK LOGO: NOS <br>PROJECTION: FLUSH <br>MAGNETIC: N = NO MAGNETIC MATERIAL <br>STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL <br>ROD/PIPE-DEPTH: 26.0 meters <br> </table> <p> <h2>History</h2><table border=1><tr><td>Date </td><td>Condition </td><td>Report By</td></tr><tr><td>1978 </td><td>MONUMENTED </td><td>NOS</td></tr><tr><td>19880221</td><td>GOOD </td><td>NGS</td></tr> </table> <p> <h2>STATION DESCRIPTION </h2> <p>DESCRIBED BY NATIONAL GEODETIC SURVEY 1988 1.4 KM (0.85 MI) EASTERLY ALONG U.S. HIGHWAY 101 FROM THE POST OFFICE IN EUREKA, THENCE 0.3 KM (0.20 MI) NORTHERLY ALONG X STREET, THENCE 0.3 KM (0.20 MI) EASTERLY ALONG THE NORTHWESTERN PACIFIC RAILROAD, 25.9 M (85.0 FT) SOUTHWEST OF THE SOUTHWEST CORNER OF A RAILROAD BRIDGE SPANNING EUREKA SLOUGH, 15.5 M (50.9 FT) SOUTH OF THE NEAR RAIL, 3.0 M (9.8 FT) WEST OF A UTILITY POLE, 0.5 M (1.6 FT) BELOW THE LEVEL OF THE TRACKS, AND 0.3 M (1.0 FT) NORTH OF A WITNESS POST. NOTE--THE DISK IS ENCASED IN A 5-INCH PVC PIPE THAT PROJECTS 0.03 M (0.1 FT) ABOVE THE GROUND SURFACE. LV0352 941 8817 TIDAL 2 http://www.geocaching.com/mark/details.asp?PID=LV0352 941 8817 TIDAL 2 Geocache Geocache 941 8817 TIDAL 2 CGS CGS Unknown Cache Regular 1 1 United States California NGS Datasheet <b> TIDAL BM </b> This is a Tidal Bench Mark. <br> <h1>941 8817 TIDAL 2</h1> <b> PID </b> LV0352 <br> <b> STATE/COUNTY</b> CA/HUMBOLDT <br> <b> USGS QUAD </b> EUREKA (1972) <br> <p> <h2>Current Survey Control</h2> <hr> <b> NAD 83(1986)</b> 40 49 04. (N) 124 10 51. (W) SCALED <br> <b> NAVD 88 </b> 3.250 (meters) 10.66 (feet) ADJUSTED <br> <hr> <b> GEOID HEIGHT</b> -30.55 (meters) GEOID03 <br> <b> DYNAMIC HT </b> 3.249 (meters) 10.66 (feet) COMP <br> <b> MODELED GRAV</b> 980,210.8 (mgal) NAVD 88 <br> <p> <b> VERT ORDER </b> FIRST CLASS II <br> <p>The horizontal coordinates were scaled from a topographic map and have an estimated accuracy of +/- 6 seconds. <p>The orthometric height was determined by differential leveling and adjusted by the National Geodetic Survey in June 1991. <p>This Tidal Bench Mark is designated as VM 11960 by the Center for Operational Oceanographic Products and Services. <p>The geoid height was determined by GEOID03. <p>The dynamic height is computed by dividing the NAVD 88 geopotential number by the normal gravity value computed on the Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45 degrees latitude (g = 980.6199 gals.). <p>The modeled gravity was interpolated from observed gravity values. <p> <table border=1><tr><td> </td><td> North </td><td> East </td><td> Units</td><td> Estimated Accuracy</td></tr><tr><td>SPC CA 1 </td><td> 667,120. </td><td> 1,816,050. </td><td> MT</td><td> (+/- 180 meters Scaled)</td></tr> </table> <p> <h2>Superseded Survey Control</h2> <p> NGVD 29 (12/02/92) 2.227 (m) 7.31 (f) ADJUSTED 1 2 <br> <p>Superseded values are not recommended for survey control. NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums. See file dsdata.txt to determine how the superseded data were derived. <p> <h2>Marker Information</h2>U.S. NATIONAL GRID SPATIAL ADDRESS: 10TDL004192(NAD 83) <br>MARKER: DJ = TIDAL STATION DISK <br>SETTING: 30 = SET IN A LIGHT STRUCTURE <br>SP_SET: FOUNDATION <br>STAMPING: NO 2 1962 <br>MARK LOGO: CGS <br>STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY <br> </table> <p> <h2>History</h2><table border=1><tr><td>Date </td><td>Condition </td><td>Report By</td></tr><tr><td>1962 </td><td>MONUMENTED </td><td>CGS</td></tr><tr><td>1967 </td><td>GOOD </td><td>NGS</td></tr><tr><td>19880216</td><td>GOOD </td><td>NGS</td></tr> </table> <p> <h2>STATION DESCRIPTION </h2> <p>DESCRIBED BY NATIONAL GEODETIC SURVEY 1967 7.2 MI SW FROM ARCATA. 6.95 MILES SOUTHWEST ALONG SAMOA ROAD FROM THE INTERSECTION OF H STREET AT ARCATA, THENCE 0.25 MILE SOUTH ALONG A PAVED ROAD, AT THE WEST EDGE OF THE WATER OF A LOG DUMP, IN THE TOP OF THE SOUTHEAST CORNER OF AN ABANDONED 14- BY 18-FOOT CONCRETE FILTER SCREEN FOR POWERHOUSE, 165 FEET EAST OF THE EAST SIDE OF A TALL SMOKE STACK, AND ABOUT 1 FOOT ABOVE THE GROUND. <p> <h2>STATION RECOVERY (1988) </h2> <p>RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1988 RECOVERED IN GOOD CONDITION. A NEW DESCRIPTION FOLLOWS. 10.2 KM (6.35 MI) SOUTHWESTERLY ALONG STATE HIGHWAY 255 FROM THE JUNCTION WITH U.S. HIGHWAY 101 IN ARCATA, THENCE 1.5 KM (0.95 MI) SOUTHWESTERLY ALONG VANCE AVENUE, THENCE 0.4 KM (0.25 MI) SOUTHERLY ALONG A GRAVELED ROAD, IN THE SOUTH CORNER OF AN ABANDONED 14 BY 18 FOOT CONCRETE FILTER SCREEN BOX THAT PROJECTS 0.3 M (1.0 FT) ABOVE THE GROUND SURFACE, AT THE WATERS EDGE, 70.0 M (229.7 FT) SOUTHEAST OF THE SOUTH CORNER OF THE BLACKSMITH AND MACHINE SHOP OF THE LOUISIANA PACIFIC LUMBER COMPANY, 47.0 M (154.2 FT) EAST-NORTHEAST OF THE CENTER OF A PEDESTRIAN GATE, 16.7 M (54.8 FT) SOUTHEAST OF THE CENTER OF THE ROAD, AND LEVEL WITH THE ROAD. LV0597 941 9059 J TIDAL http://www.geocaching.com/mark/details.asp?PID=LV0597 941 9059 J TIDAL Geocache Geocache 941 9059 J TIDAL NOS NOS Unknown Cache Regular 1 1 United States California NGS Datasheet <b> TIDAL BM </b> This is a Tidal Bench Mark. <br> <h1>941 9059 J TIDAL</h1> <b> PID </b> LV0597 <br> <b> STATE/COUNTY</b> CA/HUMBOLDT <br> <b> USGS QUAD </b> TRINIDAD (1978) <br> <p> <h2>Current Survey Control</h2> <hr> <b> NAD 83(1986)</b> 41 03 29. (N) 124 08 55. (W) SCALED <br> <b> NAVD 88 </b> 6.774 (meters) 22.22 (feet) ADJUSTED <br> <hr> <b> GEOID HEIGHT</b> -29.93 (meters) GEOID03 <br> <b> DYNAMIC HT </b> 6.772 (meters) 22.22 (feet) COMP <br> <b> MODELED GRAV</b> 980,232.3 (mgal) NAVD 88 <br> <p> <b> VERT ORDER </b> FIRST CLASS II <br> <p>The horizontal coordinates were scaled from a topographic map and have an estimated accuracy of +/- 6 seconds. <p>The orthometric height was determined by differential leveling and adjusted by the National Geodetic Survey in June 1991. <p>This Tidal Bench Mark is designated as VM 8761 by the Center for Operational Oceanographic Products and Services. <p>The geoid height was determined by GEOID03. <p>The dynamic height is computed by dividing the NAVD 88 geopotential number by the normal gravity value computed on the Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45 degrees latitude (g = 980.6199 gals.). <p>The modeled gravity was interpolated from observed gravity values. <p> <table border=1><tr><td> </td><td> North </td><td> East </td><td> Units</td><td> Estimated Accuracy</td></tr><tr><td>SPC CA 1 </td><td> 693,720. </td><td> 1,819,420. </td><td> MT</td><td> (+/- 180 meters Scaled)</td></tr> </table> <p> <h2>Superseded Survey Control</h2> <p> NGVD 29 (12/02/92) 5.741 (m) 18.84 (f) ADJUSTED 1 2 <br> <p>Superseded values are not recommended for survey control. NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums. See file dsdata.txt to determine how the superseded data were derived. <p> <h2>Marker Information</h2>U.S. NATIONAL GRID SPATIAL ADDRESS: 10TDL034458(NAD 83) <br>MARKER: DJ = TIDAL STATION DISK <br>SETTING: 66 = SET IN ROCK OUTCROP <br>SP_SET: BEDROCK <br>STAMPING: 9059 J 1977 <br>MARK LOGO: NOS <br>STABILITY: A = MOST RELIABLE AND EXPECTED TO HOLD <br>STABILITY: POSITION/ELEVATION WELL <br> </table> <p> <h2>History</h2><table border=1><tr><td>Date </td><td>Condition </td><td>Report By</td></tr><tr><td>1977 </td><td>MONUMENTED </td><td>NOS</td></tr><tr><td>1988 </td><td>GOOD </td><td>NGS</td></tr> </table> <p> <h2>STATION DESCRIPTION </h2> <p>DESCRIBED BY NATIONAL GEODETIC SURVEY 1988 1.0 KM (0.60 MI) SW FROM TRINIDAD. 0.3 KM (0.20 MI) WESTERLY ALONG MAIN STREET FROM THE JUNCTION OF U.S. HIGHWAY 101 IN TRINIDAD, THENCE 0.3 KM (0.20 MI) SOUTH ALONG TRINITY STREET, THENCE 0.4 KM (0.25 MI) WEST AND SOUTH ON EDWARDS STREET, THENCE 0.1 KM (0.05 MI) NORTH ALONG THE BEACH, NEAR THE CENTER OF A 10 BY 15 FOOT AREA OF OUTCROPPING BEDROCK, 10.1 M (33.1 FT) EAST OF THE HIGH WATER LINE, AND 2.1 M (6.9 FT) WEST OF THE BASE OF A GRASS COVERED BANK. THE MARK IS 1.5 M ABOVE THE BEACH. LV0604 941 9059 L TIDAL http://www.geocaching.com/mark/details.asp?PID=LV0604 941 9059 L TIDAL Geocache Geocache 941 9059 L TIDAL NGS NGS Unknown Cache Regular 1 1 United States California NGS Datasheet <b> TIDAL BM </b> This is a Tidal Bench Mark. <br> <h1>941 9059 L TIDAL</h1> <b> PID </b> LV0604 <br> <b> STATE/COUNTY</b> CA/HUMBOLDT <br> <b> USGS QUAD </b> TRINIDAD (1978) <br> <p> <h2>Current Survey Control</h2> <hr> <b> NAD 83(1986)</b> 41 03 25. (N) 124 08 51. (W) SCALED <br> <b> NAVD 88 </b> 3.621 (meters) 11.88 (feet) ADJUSTED <br> <hr> <b> GEOID HEIGHT</b> -29.93 (meters) GEOID03 <br> <b> DYNAMIC HT </b> 3.620 (meters) 11.88 (feet) COMP <br> <b> MODELED GRAV</b> 980,232.3 (mgal) NAVD 88 <br> <p> <b> VERT ORDER </b> FIRST CLASS II <br> <p>The horizontal coordinates were scaled from a topographic map and have an estimated accuracy of +/- 6 seconds. <p>The orthometric height was determined by differential leveling and adjusted by the National Geodetic Survey in June 1991. <p>This Tidal Bench Mark is designated as VM 8763 by the Center for Operational Oceanographic Products and Services. <p>The geoid height was determined by GEOID03. <p>The dynamic height is computed by dividing the NAVD 88 geopotential number by the normal gravity value computed on the Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45 degrees latitude (g = 980.6199 gals.). <p>The modeled gravity was interpolated from observed gravity values. <p> <table border=1><tr><td> </td><td> North </td><td> East </td><td> Units</td><td> Estimated Accuracy</td></tr><tr><td>SPC CA 1 </td><td> 693,600. </td><td> 1,819,510. </td><td> MT</td><td> (+/- 180 meters Scaled)</td></tr> </table> <p> <h2>Superseded Survey Control</h2> <p> NGVD 29 (12/02/92) 2.588 (m) 8.49 (f) ADJUSTED 1 2 <br> <p>Superseded values are not recommended for survey control. NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums. See file dsdata.txt to determine how the superseded data were derived. <p> <h2>Marker Information</h2>U.S. NATIONAL GRID SPATIAL ADDRESS: 10TDL035457(NAD 83) <br>MARKER: DJ = TIDAL STATION DISK <br>SETTING: 66 = SET IN ROCK OUTCROP <br>SP_SET: BEDROCK <br>STAMPING: 9059 L 1979 <br>MARK LOGO: NGS <br>STABILITY: A = MOST RELIABLE AND EXPECTED TO HOLD <br>STABILITY: POSITION/ELEVATION WELL <br> </table> <p> <h2>History</h2><table border=1><tr><td>Date </td><td>Condition </td><td>Report By</td></tr><tr><td>1979 </td><td>MONUMENTED </td><td>NGS</td></tr><tr><td>1988 </td><td>GOOD </td><td>NGS</td></tr> </table> <p> <h2>STATION DESCRIPTION </h2> <p>DESCRIBED BY NATIONAL GEODETIC SURVEY 1988 1.2 KM (0.75 MI) SW FROM TRINIDAD. 0.3 KM (0.20 MI) WESTERLY ALONG MAIN STREET FROM THE JUNCTION OF U.S. HIGHWAY 101 IN TRINIDAD, THENCE 0.3 KM (0.20 MI) SOUTH ALONG TRINITY STREET, THENCE 0.6 KM (0.35 MI) WEST AND SOUTH ALONG EDWARDS STREET, IN 3 BY 4 FOOT WHITE AND RED QUARTZ OUTCROP ALONG THE BASE OF A BLUFF OVERLOOKING THE BEACH, 118.8 M (389.8 FT) NORTHEAST OF THE NORTH END OF HALLMARK PIER, 46.3 M (151.9 FT) EAST OF THE CENTER OF THE STREET, AND 2.0 M (6.6 FT) NORTHWEST OF THE HIGH WATER LINE. THE MARK IS 0.2 M ABOVE THE BEACH. LV0603 941 9059 M TIDAL http://www.geocaching.com/mark/details.asp?PID=LV0603 941 9059 M TIDAL Geocache Geocache 941 9059 M TIDAL NOS NOS Unknown Cache Regular 1 1 United States California NGS Datasheet <b> TIDAL BM </b> This is a Tidal Bench Mark. <br> <h1>941 9059 M TIDAL</h1> <b> PID </b> LV0603 <br> <b> STATE/COUNTY</b> CA/HUMBOLDT <br> <b> USGS QUAD </b> TRINIDAD (1978) <br> <p> <h2>Current Survey Control</h2> <hr> <b> NAD 83(1986)</b> 41 03 24. (N) 124 08 53. (W) SCALED <br> <b> NAVD 88 </b> 6.928 (meters) 22.73 (feet) ADJUSTED <br> <hr> <b> GEOID HEIGHT</b> -29.93 (meters) GEOID03 <br> <b> DYNAMIC HT </b> 6.925 (meters) 22.72 (feet) COMP <br> <b> MODELED GRAV</b> 980,232.5 (mgal) NAVD 88 <br> <p> <b> VERT ORDER </b> FIRST CLASS II <br> <p>The horizontal coordinates were scaled from a topographic map and have an estimated accuracy of +/- 6 seconds. <p>The orthometric height was determined by differential leveling and adjusted by the National Geodetic Survey in June 1991. <p>This Tidal Bench Mark is designated as VM 8764 by the Center for Operational Oceanographic Products and Services. <p>The geoid height was determined by GEOID03. <p>The dynamic height is computed by dividing the NAVD 88 geopotential number by the normal gravity value computed on the Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45 degrees latitude (g = 980.6199 gals.). <p>The modeled gravity was interpolated from observed gravity values. <p> <table border=1><tr><td> </td><td> North </td><td> East </td><td> Units</td><td> Estimated Accuracy</td></tr><tr><td>SPC CA 1 </td><td> 693,570. </td><td> 1,819,460. </td><td> MT</td><td> (+/- 180 meters Scaled)</td></tr> </table> <p> <h2>Superseded Survey Control</h2> <p> NGVD 29 (12/02/92) 5.895 (m) 19.34 (f) ADJUSTED 1 2 <br> <p>Superseded values are not recommended for survey control. NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums. See file dsdata.txt to determine how the superseded data were derived. <p> <h2>Marker Information</h2>U.S. NATIONAL GRID SPATIAL ADDRESS: 10TDL035456(NAD 83) <br>MARKER: DJ = TIDAL STATION DISK <br>SETTING: 35 = SET IN A MAT FOUNDATION OR CONCRETE SLAB OTHER THAN <br>WITH SETTING: PAVEMENT <br>SP_SET: FOUNDATION <br>STAMPING: 9059 M 1981 <br>MARK LOGO: NOS <br>STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO <br>STABILITY: SURFACE MOTION <br> </table> <p> <h2>History</h2><table border=1><tr><td>Date </td><td>Condition </td><td>Report By</td></tr><tr><td>1981 </td><td>MONUMENTED </td><td>NOS</td></tr><tr><td>1988 </td><td>GOOD </td><td>NGS</td></tr> </table> <p> <h2>STATION DESCRIPTION </h2> <p>DESCRIBED BY NATIONAL GEODETIC SURVEY 1988 1.2 KM (0.75 MI) SW FROM TRINIDAD. 0.3 KM (0.20 MI) WESTERLY ALONG MAIN STREET FROM THE JUNCTION OF U.S. HIGHWAY 101 IN TRINIDAD, THENCE 0.3 KM (0.20 MI) SOUTH ALONG TRINITY STREET, THENCE 0.6 KM (0.35 MI) WEST AND SOUTH ALONG EDWARDS STREET, IN THE SOUTHWEST CORNER OF THE CONCRETE FOUNDATION OF A LIFT USED FOR LAUNCHING BOATS, 28.0 M (91.9 FT) NORTHEAST OF THE NORTH END OF HALMARK PIER, 18.3 M (60.0 FT) EAST OF THE SOUTHEAST CORNER OF THE SEASCAPE RESTAURANT, 2.2 M (7.2 FT) SOUTH OF THE NEAR RAIL OF A RAIL SYSTEM USED FOR LAUNCHING BOATS, AND 0.9 M (3.0 FT) WEST OF THE SOUTH LEG OF THE LIFT. THE MARK IS ABOVE LEVEL WITH THE GROUND. LV0600 941 9059 TIDAL 1 http://www.geocaching.com/mark/details.asp?PID=LV0600 941 9059 TIDAL 1 Geocache Geocache 941 9059 TIDAL 1 CGS CGS Unknown Cache Regular 1 1 United States California NGS Datasheet <b> TIDAL BM </b> This is a Tidal Bench Mark. <br> <h1>941 9059 TIDAL 1</h1> <b> PID </b> LV0600 <br> <b> STATE/COUNTY</b> CA/HUMBOLDT <br> <b> USGS QUAD </b> TRINIDAD (1978) <br> <p> <h2>Current Survey Control</h2> <hr> <b> NAD 83(1986)</b> 41 03 22. (N) 124 08 57. (W) SCALED <br> <b> NAVD 88 </b> 4.665 (meters) 15.31 (feet) ADJUSTED <br> <hr> <b> GEOID HEIGHT</b> -29.94 (meters) GEOID03 <br> <b> DYNAMIC HT </b> 4.663 (meters) 15.30 (feet) COMP <br> <b> MODELED GRAV</b> 980,233.0 (mgal) NAVD 88 <br> <p> <b> VERT ORDER </b> FIRST CLASS II <br> <p>The horizontal coordinates were scaled from a topographic map and have an estimated accuracy of +/- 6 seconds. <p>The orthometric height was determined by differential leveling and adjusted by the National Geodetic Survey in June 1991. <p>This Tidal Bench Mark is designated as VM 8754 by the Center for Operational Oceanographic Products and Services. <p>The geoid height was determined by GEOID03. <p>The dynamic height is computed by dividing the NAVD 88 geopotential number by the normal gravity value computed on the Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45 degrees latitude (g = 980.6199 gals.). <p>The modeled gravity was interpolated from observed gravity values. <p> <table border=1><tr><td> </td><td> North </td><td> East </td><td> Units</td><td> Estimated Accuracy</td></tr><tr><td>SPC CA 1 </td><td> 693,510. </td><td> 1,819,370. </td><td> MT</td><td> (+/- 180 meters Scaled)</td></tr> </table> <p> <h2>Superseded Survey Control</h2> <p> NGVD 29 (12/02/92) 3.632 (m) 11.92 (f) ADJUSTED 1 2 <br> <p>Superseded values are not recommended for survey control. NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums. See file dsdata.txt to determine how the superseded data were derived. <p> <h2>Marker Information</h2>U.S. NATIONAL GRID SPATIAL ADDRESS: 10TDL034456(NAD 83) <br>MARKER: DJ = TIDAL STATION DISK <br>SETTING: 66 = SET IN ROCK OUTCROP <br>SP_SET: BEDROCK <br>STAMPING: 1 1929 <br>MARK LOGO: CGS <br>STABILITY: A = MOST RELIABLE AND EXPECTED TO HOLD <br>STABILITY: POSITION/ELEVATION WELL <br> </table> <p> <h2>History</h2><table border=1><tr><td>Date </td><td>Condition </td><td>Report By</td></tr><tr><td>1929 </td><td>MONUMENTED </td><td>CGS</td></tr><tr><td>1988 </td><td>GOOD </td><td>NGS</td></tr> </table> <p> <h2>STATION DESCRIPTION </h2> <p>DESCRIBED BY NATIONAL GEODETIC SURVEY 1988 1.2 KM (0.75 MI) SW FROM TRINIDAD. 0.3 KM (0.20 MI) WESTERLY ALONG MAIN STREET FROM THE JUNCTION OF U.S. HIGHWAY 101 IN TRINIDAD, THENCE 0.3 KM (0.20 MI) SOUTH ALONG TRINITY STREET, THENCE 0.6 KM (0.35 MI) WEST AND SOUTH ALONG EDWARDS STREET, IN A 10 BY 10 FOOT AREA OF OUTCROPPING BEDROCK, 30.4 M (99.7 FT) SOUTH OF THE NORTH END OF HALLMARK PIER, AND 9.1 M (29.9 FT) WEST OF THE CENTER OF THE PIER. THE MARK IS 3.5 M ABOVE THE LOW WATER LINE. LV0602 941 9059 TIDAL 2 http://www.geocaching.com/mark/details.asp?PID=LV0602 941 9059 TIDAL 2 Geocache Geocache 941 9059 TIDAL 2 CGS CGS Unknown Cache Regular 1 1 United States California NGS Datasheet <b> TIDAL BM </b> This is a Tidal Bench Mark. <br> <h1>941 9059 TIDAL 2</h1> <b> PID </b> LV0602 <br> <b> STATE/COUNTY</b> CA/HUMBOLDT <br> <b> USGS QUAD </b> TRINIDAD (1978) <br> <p> <h2>Current Survey Control</h2> <hr> <b> NAD 83(1986)</b> 41 03 22. (N) 124 08 55. (W) SCALED <br> <b> NAVD 88 </b> 3.744 (meters) 12.28 (feet) ADJUSTED <br> <hr> <b> GEOID HEIGHT</b> -29.94 (meters) GEOID03 <br> <b> DYNAMIC HT </b> 3.743 (meters) 12.28 (feet) COMP <br> <b> MODELED GRAV</b> 980,232.8 (mgal) NAVD 88 <br> <p> <b> VERT ORDER </b> FIRST CLASS II <br> <p>The horizontal coordinates were scaled from a topographic map and have an estimated accuracy of +/- 6 seconds. <p>The orthometric height was determined by differential leveling and adjusted by the National Geodetic Survey in June 1991. <p>This Tidal Bench Mark is designated as VM 8755 by the Center for Operational Oceanographic Products and Services. <p>The geoid height was determined by GEOID03. <p>The dynamic height is computed by dividing the NAVD 88 geopotential number by the normal gravity value computed on the Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45 degrees latitude (g = 980.6199 gals.). <p>The modeled gravity was interpolated from observed gravity values. <p> <table border=1><tr><td> </td><td> North </td><td> East </td><td> Units</td><td> Estimated Accuracy</td></tr><tr><td>SPC CA 1 </td><td> 693,510. </td><td> 1,819,420. </td><td> MT</td><td> (+/- 180 meters Scaled)</td></tr> </table> <p> <h2>Superseded Survey Control</h2> <p> NGVD 29 (12/02/92) 2.711 (m) 8.89 (f) ADJUSTED 1 2 <br> <p>Superseded values are not recommended for survey control. NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums. See file dsdata.txt to determine how the superseded data were derived. <p> <h2>Marker Information</h2>U.S. NATIONAL GRID SPATIAL ADDRESS: 10TDL034456(NAD 83) <br>MARKER: DJ = TIDAL STATION DISK <br>SETTING: 66 = SET IN ROCK OUTCROP <br>SP_SET: BEDROCK <br>STAMPING: 2 1929 <br>MARK LOGO: CGS <br>STABILITY: A = MOST RELIABLE AND EXPECTED TO HOLD <br>STABILITY: POSITION/ELEVATION WELL <br> </table> <p> <h2>History</h2><table border=1><tr><td>Date </td><td>Condition </td><td>Report By</td></tr><tr><td>1929 </td><td>MONUMENTED </td><td>CGS</td></tr><tr><td>1988 </td><td>GOOD </td><td>NGS</td></tr> </table> <p> <h2>STATION DESCRIPTION </h2> <p>DESCRIBED BY NATIONAL GEODETIC SURVEY 1988 1.2 KM (0.75 MI) SW FROM TRINIDAD. 0.3 KM (0.20 MI) WESTERLY ALONG MAIN STREET FROM THE JUNCTION OF U.S. HIGHWAY 101 IN TRINIDAD, THENCE 0.3 KM (0.20 MI) SOUTH ALONG TRINITY STREET, THENCE 0.6 KM (0.35 MI) WEST AND SOUTH ALONG EDWARDS STREET, SET VERTICALLY IN THE WEST FACE OF A LARGE AREA OF OUTCROPPING BEDROCK AT THE WEST BASE OF LITTLE HEAD, 36.6 M (120.1 FT) SOUTH OF THE NORTH END OF HALLMARK PIER, 17.4 M (57.1 FT) SOUTHEAST OF BENCH MARK TIDAL 4, AND 14.6 M (47.9 FT) EAST OF THE CENTER OF THE PIER. THE MARK IS 1.0 M BELOW THE PIER. LV0601 941 9059 TIDAL 4 http://www.geocaching.com/mark/details.asp?PID=LV0601 941 9059 TIDAL 4 Geocache Geocache 941 9059 TIDAL 4 NGS NGS Unknown Cache Regular 1 1 United States California NGS Datasheet <b> TIDAL BM </b> This is a Tidal Bench Mark. <br> <h1>941 9059 TIDAL 4</h1> <b> PID </b> LV0601 <br> <b> STATE/COUNTY</b> CA/HUMBOLDT <br> <b> USGS QUAD </b> TRINIDAD (1978) <br> <p> <h2>Current Survey Control</h2> <hr> <b> NAD 83(1986)</b> 41 03 22. (N) 124 08 56. (W) SCALED <br> <b> NAVD 88 </b> 2.737 (meters) 8.98 (feet) ADJUSTED <br> <hr> <b> GEOID HEIGHT</b> -29.94 (meters) GEOID03 <br> <b> DYNAMIC HT </b> 2.736 (meters) 8.98 (feet) COMP <br> <b> MODELED GRAV</b> 980,232.9 (mgal) NAVD 88 <br> <p> <b> VERT ORDER </b> FIRST CLASS II <br> <p>The horizontal coordinates were scaled from a topographic map and have an estimated accuracy of +/- 6 seconds. <p>The orthometric height was determined by differential leveling and adjusted by the National Geodetic Survey in June 1991. <p>This Tidal Bench Mark is designated as VM 8756 by the Center for Operational Oceanographic Products and Services. <p>The geoid height was determined by GEOID03. <p>The dynamic height is computed by dividing the NAVD 88 geopotential number by the normal gravity value computed on the Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45 degrees latitude (g = 980.6199 gals.). <p>The modeled gravity was interpolated from observed gravity values. <p> <table border=1><tr><td> </td><td> North </td><td> East </td><td> Units</td><td> Estimated Accuracy</td></tr><tr><td>SPC CA 1 </td><td> 693,510. </td><td> 1,819,390. </td><td> MT</td><td> (+/- 180 meters Scaled)</td></tr> </table> <p> <h2>Superseded Survey Control</h2> <p> NGVD 29 (12/02/92) 1.703 (m) 5.59 (f) ADJUSTED 1 2 <br> <p>Superseded values are not recommended for survey control. NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums. See file dsdata.txt to determine how the superseded data were derived. <p> <h2>Marker Information</h2>U.S. NATIONAL GRID SPATIAL ADDRESS: 10TDL034456(NAD 83) <br>MARKER: DJ = TIDAL STATION DISK <br>SETTING: 66 = SET IN ROCK OUTCROP <br>SP_SET: BEDROCK <br>STAMPING: TIDAL 4 1972 <br>MARK LOGO: NGS <br>STABILITY: A = MOST RELIABLE AND EXPECTED TO HOLD <br>STABILITY: POSITION/ELEVATION WELL <br> </table> <p> <h2>History</h2><table border=1><tr><td>Date </td><td>Condition </td><td>Report By</td></tr><tr><td>1972 </td><td>MONUMENTED </td><td>NGS</td></tr><tr><td>1988 </td><td>GOOD </td><td>NGS</td></tr> </table> <p> <h2>STATION DESCRIPTION </h2> <p>DESCRIBED BY NATIONAL GEODETIC SURVEY 1988 1.2 KM (0.75 MI) SW FROM TRINIDAD. 0.3 KM (0.20 MI) WESTERLY ALONG MAIN STREET FROM THE JUNCTION OF U.S. HIGHWAY 101 IN TRINIDAD, THENCE 0.3 KM (0.20 MI) SOUTH ALONG TRINITY STREET, THENCE 0.6 KM (0.35 MI) WEST AND SOUTH ON EDWARDS STREET, IN A LARGE AREA OF OUTCROPPING BEDROCK AT THE WEST BASE OF LITTLE HEAD, 20.1 M (65.9 FT) SOUTH OF THE NORTH END OF HALLMARK PIER, 17.4 M (57.1 FT) NORTHWEST OF BENCH MARK TIDAL 2, AND 9.4 M (30.8 FT) EAST OF THE CENTER OF THE PIER. THE MARK IS 3.0 M BELOW THE PIER. LV0598 941 9059 TIDAL 5 http://www.geocaching.com/mark/details.asp?PID=LV0598 941 9059 TIDAL 5 Geocache Geocache 941 9059 TIDAL 5 NGS NGS Unknown Cache Regular 1 1 United States California NGS Datasheet <b> TIDAL BM </b> This is a Tidal Bench Mark. <br> <h1>941 9059 TIDAL 5</h1> <b> PID </b> LV0598 <br> <b> STATE/COUNTY</b> CA/HUMBOLDT <br> <b> USGS QUAD </b> TRINIDAD (1978) <br> <p> <h2>Current Survey Control</h2> <hr> <b> NAD 83(1986)</b> 41 03 22. (N) 124 08 59. (W) SCALED <br> <b> NAVD 88 </b> 4.056 (meters) 13.31 (feet) ADJUSTED <br> <hr> <b> GEOID HEIGHT</b> -29.95 (meters) GEOID03 <br> <b> DYNAMIC HT </b> 4.054 (meters) 13.30 (feet) COMP <br> <b> MODELED GRAV</b> 980,233.2 (mgal) NAVD 88 <br> <p> <b> VERT ORDER </b> FIRST CLASS II <br> <p>The horizontal coordinates were scaled from a topographic map and have an estimated accuracy of +/- 6 seconds. <p>The orthometric height was determined by differential leveling and adjusted by the National Geodetic Survey in June 1991. <p>This Tidal Bench Mark is designated as VM 8757 by the Center for Operational Oceanographic Products and Services. <p>The geoid height was determined by GEOID03. <p>The dynamic height is computed by dividing the NAVD 88 geopotential number by the normal gravity value computed on the Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45 degrees latitude (g = 980.6199 gals.). <p>The modeled gravity was interpolated from observed gravity values. <p> <table border=1><tr><td> </td><td> North </td><td> East </td><td> Units</td><td> Estimated Accuracy</td></tr><tr><td>SPC CA 1 </td><td> 693,510. </td><td> 1,819,320. </td><td> MT</td><td> (+/- 180 meters Scaled)</td></tr> </table> <p> <h2>Superseded Survey Control</h2> <p> NGVD 29 (12/02/92) 3.022 (m) 9.91 (f) ADJUSTED 1 2 <br> <p>Superseded values are not recommended for survey control. NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums. See file dsdata.txt to determine how the superseded data were derived. <p> <h2>Marker Information</h2>U.S. NATIONAL GRID SPATIAL ADDRESS: 10TDL033456(NAD 83) <br>MARKER: DJ = TIDAL STATION DISK <br>SETTING: 66 = SET IN ROCK OUTCROP <br>SP_SET: BEDROCK <br>STAMPING: TIDAL 5 1972 <br>MARK LOGO: NGS <br>STABILITY: A = MOST RELIABLE AND EXPECTED TO HOLD <br>STABILITY: POSITION/ELEVATION WELL <br> </table> <p> <h2>History</h2><table border=1><tr><td>Date </td><td>Condition </td><td>Report By</td></tr><tr><td>1972 </td><td>MONUMENTED </td><td>NGS</td></tr><tr><td>1988 </td><td>GOOD </td><td>NGS</td></tr> </table> <p> <h2>STATION DESCRIPTION </h2> <p>DESCRIBED BY NATIONAL GEODETIC SURVEY 1988 1.2 KM (0.75 MI) SW FROM TRINIDAD. 0.3 KM (0.20 MI) WESTERLY ALONG MAIN STREET FROM THE JUNCTION OF U.S. HIGHWAY 101 IN TRINIDAD, THENCE 0.3 KM (0.20 MI) SOUTH ALONG TRINITY STREET, THENCE 0.6 KM (0.35 MI) WEST AND SOUTH ALONG EDWARDS STREET, IN AN AREA OF OUTCROPPING BEDROCK AT THE BASE OF A CLIFF THAT RUNS ALONG THE EAST SIDE OF TRINIDAD HEAD, 118.9 M (390.1 FT) WEST OF THE NORTHWEST CORNER OF HALLMARK PIER, AND 13.7 M (44.9 FT) SOUTH OF THE BASE OF A GRASS COVERED BLUFF. THE MARK IS 1.5 M ABOVE THE GROUND. LV0599 941 9059 TIDAL 6 http://www.geocaching.com/mark/details.asp?PID=LV0599 941 9059 TIDAL 6 Geocache Geocache 941 9059 TIDAL 6 NGS NGS Unknown Cache Regular 1 1 United States California NGS Datasheet <b> TIDAL BM </b> This is a Tidal Bench Mark. <br> <h1>941 9059 TIDAL 6</h1> <b> PID </b> LV0599 <br> <b> STATE/COUNTY</b> CA/HUMBOLDT <br> <b> USGS QUAD </b> TRINIDAD (1978) <br> <p> <h2>Current Survey Control</h2> <hr> <b> NAD 83(1986)</b> 41 03 21. (N) 124 08 59. (W) SCALED <br> <b> NAVD 88 </b> 2.364 (meters) 7.76 (feet) ADJUSTED <br> <hr> <b> GEOID HEIGHT</b> -29.95 (meters) GEOID03 <br> <b> DYNAMIC HT </b> 2.363 (meters) 7.75 (feet) COMP <br> <b> MODELED GRAV</b> 980,233.2 (mgal) NAVD 88 <br> <p> <b> VERT ORDER </b> FIRST CLASS II <br> <p>The horizontal coordinates were scaled from a topographic map and have an estimated accuracy of +/- 6 seconds. <p>The orthometric height was determined by differential leveling and adjusted by the National Geodetic Survey in June 1991. <p>This Tidal Bench Mark is designated as VM 8758 by the Center for Operational Oceanographic Products and Services. <p>The geoid height was determined by GEOID03. <p>The dynamic height is computed by dividing the NAVD 88 geopotential number by the normal gravity value computed on the Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45 degrees latitude (g = 980.6199 gals.). <p>The modeled gravity was interpolated from observed gravity values. <p> <table border=1><tr><td> </td><td> North </td><td> East </td><td> Units</td><td> Estimated Accuracy</td></tr><tr><td>SPC CA 1 </td><td> 693,480. </td><td> 1,819,320. </td><td> MT</td><td> (+/- 180 meters Scaled)</td></tr> </table> <p> <h2>Superseded Survey Control</h2> <p> NGVD 29 (12/02/92) 1.331 (m) 4.37 (f) ADJUSTED 1 2 <br> <p>Superseded values are not recommended for survey control. NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums. See file dsdata.txt to determine how the superseded data were derived. <p> <h2>Marker Information</h2>U.S. NATIONAL GRID SPATIAL ADDRESS: 10TDL033455(NAD 83) <br>MARKER: DJ = TIDAL STATION DISK <br>SETTING: 66 = SET IN ROCK OUTCROP <br>SP_SET: BEDROCK <br>STAMPING: TIDAL 6 1972 <br>MARK LOGO: NGS <br>STABILITY: A = MOST RELIABLE AND EXPECTED TO HOLD <br>STABILITY: POSITION/ELEVATION WELL <br> </table> <p> <h2>History</h2><table border=1><tr><td>Date </td><td>Condition </td><td>Report By</td></tr><tr><td>1972 </td><td>MONUMENTED </td><td>NGS</td></tr><tr><td>1988 </td><td>GOOD </td><td>NGS</td></tr> </table> <p> <h2>STATION DESCRIPTION </h2> <p>DESCRIBED BY NATIONAL GEODETIC SURVEY 1988 1.2 KM (0.75 MI) SW FROM TRINIDAD. 0.3 KM (0.20 MI) WESTERLY ALONG MAIN STREET FROM THE JUNCTION OF U.S. HIGHWAY 101 IN TRINIDAD, THENCE 0.3 KM (0.20 MI) SOUTH ALONG TRINITY STREET, THENCE 0.6 KM (0.35 MI) WEST AND SOUTH ALONG EDWARDS STREET, IN AN AREA OF OUTCROPPING BEDROCK AT THE BASE OF A CLIFF THAT RUNS ALONG THE EAST SIDE OF TRINIDAD HEAD, 118.9 M (390.1 FT) WEST OF THE NORTHWEST END OF HALLMARK PIER, AND 36.6 M (120.1 FT) SOUTH OF THE BASE OF A GRASS COVERED BLUFF. THE MARK IS 1.5 M ABOVE THE LOW WATER LINE. LU1312 A 101 http://www.geocaching.com/mark/details.asp?PID=LU1312 A 101 Geocache Geocache A 101 CGS Unknown Cache Regular 1 1 United States California NGS Datasheet <h1>A 101</h1> <b> PID </b> LU1312 <br> <b> STATE/COUNTY</b> CA/HUMBOLDT <br> <b> USGS QUAD </b> REDCREST (1969) <br> <p> <h2>Current Survey Control</h2> <hr> <b> NAD 83(1986)</b> 40 22 42. (N) 123 55 07. (W) SCALED <br> <b> NAVD 88 </b> 48.18 (+/-2cm) 158.1 (feet) VERTCON <br> <hr> <b> GEOID HEIGHT</b> -30.33 (meters) GEOID03 <br> <p> <b> VERT ORDER </b> FIRST CLASS II (See Below) <br> <p>The horizontal coordinates were scaled from a topographic map and have an estimated accuracy of +/- 6 seconds. <p>The NAVD 88 height was computed by applying the VERTCON shift value to the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.) The vertical order pertains to the NGVD 29 superseded value. <p>The geoid height was determined by GEOID03. <p> <table border=1><tr><td> </td><td> North </td><td> East </td><td> Units</td><td> Estimated Accuracy</td></tr><tr><td>SPC CA 1 </td><td> 617,820. </td><td> 1,837,100. </td><td> MT</td><td> (+/- 180 meters Scaled)</td></tr> </table> <p> <h2>Superseded Survey Control</h2> <p> NGVD 29 (??/??/92) 47.220 (m) 154.92 (f) ADJ UNCH 1 2 <br> <p>Superseded values are not recommended for survey control. NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums. See file dsdata.txt to determine how the superseded data were derived. <p> <h2>Marker Information</h2>U.S. NATIONAL GRID SPATIAL ADDRESS: 10TDK220701(NAD 83) <br>MARKER: DB = BENCH MARK DISK <br>SETTING: 80 = SET IN A BOULDER <br>STAMPING: A 101 1931 <br>STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO <br>STABILITY: SURFACE MOTION <br> </table> <p> <h2>History</h2><table border=1><tr><td>Date </td><td>Condition </td><td>Report By</td></tr><tr><td>1931 </td><td>MONUMENTED </td><td>CGS</td></tr><tr><td>1934 </td><td>GOOD </td><td>NGS</td></tr><tr><td>1949 </td><td>MARK NOT FOUND </td><td>USGS</td></tr> </table> <p> <h2>STATION DESCRIPTION </h2> <p>DESCRIBED BY NATIONAL GEODETIC SURVEY 1934 6 MI SE FROM SHIVELY. ABOUT 6 MILES SOUTHEAST ALONG THE NORTHWESTERN PACIFIC RAILROAD FROM SHIVELEY, HUMBOLDT COUNTY, 4.9 MILES NORTH OF WEOTT, AT POLE 239/22, 45 FEET NORTH OF A WOODEN BRIDGE, 22 FEET EAST OF THE TRACK, AND IN THE TOP OF A SQUARE SANDSTONE BOULDER. A STANDARD DISK, STAMPED A 10 1931. <p> <h2>STATION RECOVERY (1949) </h2> <p>RECOVERY NOTE BY US GEOLOGICAL SURVEY 1949 MARK NOT FOUND. LU1247 A 102 http://www.geocaching.com/mark/details.asp?PID=LU1247 A 102 Geocache Geocache A 102 CGS CGS Unknown Cache Regular 1 1 United States California NGS Datasheet <h1>A 102</h1> <b> PID </b> LU1247 <br> <b> STATE/COUNTY</b> CA/HUMBOLDT <br> <b> USGS QUAD </b> GARBERVILLE (1970) <br> <p> <h2>Current Survey Control</h2> <hr> <b> NAD 83(1986)</b> 40 03 28. (N) 123 47 10. (W) SCALED <br> <b> NAVD 88 </b> 121.595 (meters) 398.93 (feet) ADJUSTED <br> <hr> <b> GEOID HEIGHT</b> -30.29 (meters) GEOID03 <br> <b> DYNAMIC HT </b> 121.530 (meters) 398.72 (feet) COMP <br> <b> MODELED GRAV</b> 980,089.8 (mgal) NAVD 88 <br> <p> <b> VERT ORDER </b> FIRST CLASS II <br> <p>The horizontal coordinates were scaled from a topographic map and have an estimated accuracy of +/- 6 seconds. <p>The orthometric height was determined by differential leveling and adjusted by the National Geodetic Survey in June 1991. <p>The geoid height was determined by GEOID03. <p>The dynamic height is computed by dividing the NAVD 88 geopotential number by the normal gravity value computed on the Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45 degrees latitude (g = 980.6199 gals.). <p>The modeled gravity was interpolated from observed gravity values. <p> <table border=1><tr><td> </td><td> North </td><td> East </td><td> Units</td><td> Estimated Accuracy</td></tr><tr><td>SPC CA 1 </td><td> 582,000. </td><td> 1,847,620. </td><td> MT</td><td> (+/- 180 meters Scaled)</td></tr> </table> <p> <h2>Superseded Survey Control</h2> <p> NGVD 29 (12/02/92) 120.675 (m) 395.91 (f) ADJUSTED 1 2 <br> <p>Superseded values are not recommended for survey control. NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums. See file dsdata.txt to determine how the superseded data were derived. <p> <h2>Marker Information</h2>U.S. NATIONAL GRID SPATIAL ADDRESS: 10TDK329344(NAD 83) <br>MARKER: DB = BENCH MARK DISK <br>SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT <br>SP_SET: CONCRETE POST <br>STAMPING: A 102 1931 395.541 <br>MARK LOGO: CGS <br>MAGNETIC: N = NO MAGNETIC MATERIAL <br>STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO <br>STABILITY: SURFACE MOTION <br>SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR <br>SATELLITE: SATELLITE OBSERVATIONS - July 29, 1992 <br> </table> <p> <h2>History</h2><table border=1><tr><td>Date </td><td>Condition </td><td>Report By</td></tr><tr><td>1931 </td><td>MONUMENTED </td><td>CGS</td></tr><tr><td>1967 </td><td>GOOD </td><td>NGS</td></tr><tr><td>19880331</td><td>GOOD </td><td>NGS</td></tr><tr><td>19920729</td><td>GOOD </td><td>NGS</td></tr> </table> <p> <h2>STATION DESCRIPTION </h2> <p>DESCRIBED BY NATIONAL GEODETIC SURVEY 1967 3.8 MI S FROM GARBERVILLE. 3.75 MILES SOUTH ALONG U.S. HIGHWAY 101 FROM THE POST OFFICE AT GARBERVILLE, 0.1 MILE WEST OF A PULLOUT AREA AND A LARGE BOULDER IN THE RIVER, BETWEEN THE HIGHWAY AND THE RIVER AMONG A GROUP OF TREES, 34 FEET NORTH OF THE CENTER LINE OF THE HIGHWAY, 215 FEET EAST OF CULVERT 5.91, 56 FEET WEST OF A POWER POLE, ABOUT 12 FEET SOUTH OF A CLIFF AT THE EDGE OF THE RIVER, 1.2 FEET WEST OF A WITNESS POST, ABOUT LEVEL WITH THE HIGHWAY, AND SET IN THE TOP OF A CONCRETE POST PROJECTING 0.6 FOOT ABOVE THE GROUND. <p> <h2>STATION RECOVERY (1988) </h2> <p>RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1988 RECOVERED IN GOOD CONDITION. A NEW TO REACH FOLLOWS. 4.1 KM (2.55 MI) SOUTHERLY ALONG U.S. HIGHWAY 101 FROM THE POST OFFICE IN GARBERVILLE, THENCE 0.2 KM (0.10 MI) EAST ALONG LAKE BENBOW DRIVE, THENCE 1.7 KM (1.05 MI) SOUTHERLY ALONG BENBOW DRIVE. <p> <h2>STATION RECOVERY (1992) </h2> <p>RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1992 0.1 KM (0.05 MI) SOUTHWESTERLY ALONG SPROWEL CREEK ROAD FROM THE POST OFFICE IN GARBERVILLE, THENCE 4.1 KM (2.55 MI) SOUTHERLY ALONG U.S. HIGHWAY 101, THENCE 0.2 KM (0.10 MI) EASTERLY ALONG LAKE BENBOW DRIVE, THENCE 1.7 KM (1.05 MI) SOUTHERLY ALONG BENBOW DRIVE, 0.2 KM (0.10 MI) WEST OF A PULLOUT, 65.5 M (214.9 FT) EAST OF CULVERT NUMBER 5.91, 17.1 M (56.1 FT) WEST OF A UTILITY POLE, 10.4 M (34.1 FT) NORTH OF AND LEVEL WITH THE CENTERLINE OF THE DRIVE, 3.7 M (12.1 FT) SOUTH OF A CLIFF AT THE EDGE OF A RIVER, 0.4 M (1.3 FT) WEST OF A WITNESS POST, AND THE MONUMENT PROJECTS 0.2 M (0.7 FT) ABOVE THE GROUND SURFACE. LU1245 A 1084 http://www.geocaching.com/mark/details.asp?PID=LU1245 A 1084 Geocache Geocache A 1084 CGS CGS Unknown Cache Regular 1 1 United States California NGS Datasheet <h1>A 1084</h1> <b> PID </b> LU1245 <br> <b> STATE/COUNTY</b> CA/HUMBOLDT <br> <b> USGS QUAD </b> GARBERVILLE (1970) <br> <p> <h2>Current Survey Control</h2> <hr> <b> NAD 83(1986)</b> 40 02 28. (N) 123 46 47. (W) SCALED <br> <b> NAVD 88 </b> 129.153 (meters) 423.73 (feet) ADJUSTED <br> <hr> <b> GEOID HEIGHT</b> -30.25 (meters) GEOID03 <br> <b> DYNAMIC HT </b> 129.080 (meters) 423.49 (feet) COMP <br> <b> MODELED GRAV</b> 980,063.9 (mgal) NAVD 88 <br> <p> <b> VERT ORDER </b> FIRST CLASS II <br> <p>The horizontal coordinates were scaled from a topographic map and have an estimated accuracy of +/- 6 seconds. <p>The orthometric height was determined by differential leveling and adjusted by the National Geodetic Survey in June 1991. <p>The geoid height was determined by GEOID03. <p>The dynamic height is computed by dividing the NAVD 88 geopotential number by the normal gravity value computed on the Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45 degrees latitude (g = 980.6199 gals.). <p>The modeled gravity was interpolated from observed gravity values. <p> <table border=1><tr><td> </td><td> North </td><td> East </td><td> Units</td><td> Estimated Accuracy</td></tr><tr><td>SPC CA 1 </td><td> 580,130. </td><td> 1,848,130. </td><td> MT</td><td> (+/- 180 meters Scaled)</td></tr> </table> <p> <h2>Superseded Survey Control</h2> <p> NGVD 29 (12/02/92) 128.231 (m) 420.70 (f) ADJUSTED 1 2 <br> <p>Superseded values are not recommended for survey control. NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums. See file dsdata.txt to determine how the superseded data were derived. <p> <h2>Marker Information</h2>U.S. NATIONAL GRID SPATIAL ADDRESS: 10TDK334326(NAD 83) <br>MARKER: DB = BENCH MARK DISK <br>SETTING: 38 = SET IN THE ABUTMENT OR PIER OF A LARGE BRIDGE <br>SP_SET: ABUTMENT <br>STAMPING: A 1084 1967 <br>MARK LOGO: CGS <br>MAGNETIC: N = NO MAGNETIC MATERIAL <br>STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL <br>SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR <br>SATELLITE: SATELLITE OBSERVATIONS - July 29, 1992 <br> </table> <p> <h2>History</h2><table border=1><tr><td>Date </td><td>Condition </td><td>Report By</td></tr><tr><td>1967 </td><td>MONUMENTED </td><td>CGS</td></tr><tr><td>1971 </td><td>GOOD</td><td>CGS</td></tr><tr><td>19880331</td><td>GOOD </td><td>NGS</td></tr><tr><td>19920729</td><td>GOOD </td><td>NGS</td></tr> </table> <p> <h2>STATION DESCRIPTION </h2> <p>DESCRIBED BY COAST AND GEODETIC SURVEY 1967 5.4 MI S FROM GARBERVILLE. 5.45 MILES SOUTH ALONG U.S. HIGHWAY 101 FROM THE POST OFFICE AT GARBERVILLE, 6.4 MILES NORTH OF PIERCY, 0.5 MILE NORTH OF THE NORTHEAST END OF A BRIDGE OVER SOUTH FORK EEL RIVER, NEAR CULVERT 4.21, NEAR A POINT WHERE A POWER LINE CROSSES THE RIVER, IN THE TOP OF THE CENTER OF THE NORTHEAST CONCRETE ABUTMENT OF AN ABANDONED BRIDGE OVER EEL RIVER, 116 FEET SOUTHWEST OF THE CENTER LINE OF THE HIGHWAY, 400 FEET NORTHWEST OF A BE FIRE SAFE FOREST SERVICE SIGN, AND ABOUT LEVEL WITH THE HIGHWAY. <p> <h2>STATION RECOVERY (1971) </h2> <p>RECOVERED 1971 RECOVERED IN GOOD CONDITION. <p> <h2>STATION RECOVERY (1988) </h2> <p>RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1988 RECOVERED IN GOOD CONDITION. A NEW TO REACH FOLLOWS. 4.1 KM (2.55 MI) SOUTHERLY ALONG U.S. HIGHWAY 101 FROM THE POST OFFICE IN GARBERVILLE, THENCE 0.2 KM (0.10 MI) EAST ALONG LAKE BENBOW DRIVE, THENCE 4.5 KM (2.80 MI) SOUTHERLY ALONG BENBOW DRIVE. DELETE--400 FEET NORTHWEST OF A FOREST SEVICE SIGN (BE FIRE SAFE). ADD--3.4 M (11.2 FT) SOUTHEAST OF THE NORTHWEST END OF THE ABUTMENT. <p> <h2>STATION RECOVERY (1992) </h2> <p>RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1992 0.1 KM (0.05 MI) SOUTHWESTERLY ALONG SPROWEL CREEK ROAD FROM THE POST OFFICE IN GARBERVILLE, THENCE 4.1 KM (2.55 MI) SOUTHERLY ALONG U.S. HIGHWAY 101, THENCE 0.2 KM (0.10 MI) EASTERLY ALONG LAKE BENBOW DRIVE, THENCE 4.5 KM (2.80 MI) SOUTHERLY ALONG BENBOW DRIVE, NEAR THE CENTER OF THE NORTHEAST CONCRETE ABUTMENT OF A BRIDGE (DECK REMOVED), 35.4 M (116.1 FT) SOUTHWEST OF THE CENTERLINE OF THE HIGHWAY, 3.4 M (11.2 FT) SOUTHEAST OF THE NORTHWEST END OF THE ABUTMENT, AND 0.6 M (2.0 FT) BELOW THE LEVEL OF THE DRIVE. LU1284 A 1085 http://www.geocaching.com/mark/details.asp?PID=LU1284 A 1085 Geocache Geocache A 1085 CGS CGS Unknown Cache Regular 1 1 United States California NGS Datasheet <h1>A 1085</h1> <b> PID </b> LU1284 <br> <b> STATE/COUNTY</b> CA/HUMBOLDT <br> <b> USGS QUAD </b> MIRANDA (1970) <br> <p> <h2>Current Survey Control</h2> <hr> <b> NAD 83(1986)</b> 40 14 13. (N) 123 49 26. (W) SCALED <br> <b> NAVD 88 </b> 101.765 (meters) 333.87 (feet) ADJUSTED <br> <hr> <b> GEOID HEIGHT</b> -30.32 (meters) GEOID03 <br> <b> DYNAMIC HT </b> 101.710 (meters) 333.69 (feet) COMP <br> <b> MODELED GRAV</b> 980,088.9 (mgal) NAVD 88 <br> <p> <b> VERT ORDER </b> FIRST CLASS II <br> <p>The horizontal coordinates were scaled from a topographic map and have an estimated accuracy of +/- 6 seconds. <p>The orthometric height was determined by differential leveling and adjusted by the National Geodetic Survey in December 1992. <p>The geoid height was determined by GEOID03. <p>The dynamic height is computed by dividing the NAVD 88 geopotential number by the normal gravity value computed on the Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45 degrees latitude (g = 980.6199 gals.). <p>The modeled gravity was interpolated from observed gravity values. <p> <table border=1><tr><td> </td><td> North </td><td> East </td><td> Units</td><td> Estimated Accuracy</td></tr><tr><td>SPC CA 1 </td><td> 601,950. </td><td> 1,844,810. </td><td> MT</td><td> (+/- 180 meters Scaled)</td></tr> </table> <p> <h2>Superseded Survey Control</h2> <p> NAVD 88 (06/15/91) 101.765 (m) 333.87 (f) UNKNOWN 1 2 <br> NGVD 29 (12/02/92) 100.832 (m) 330.81 (f) ADJUSTED 1 2 <br> <p>Superseded values are not recommended for survey control. NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums. See file dsdata.txt to determine how the superseded data were derived. <p> <h2>Marker Information</h2>U.S. NATIONAL GRID SPATIAL ADDRESS: 10TDK299543(NAD 83) <br>MARKER: DB = BENCH MARK DISK <br>SETTING: 35 = SET IN A MAT FOUNDATION OR CONCRETE SLAB OTHER THAN <br>WITH SETTING: PAVEMENT <br>SP_SET: STEP <br>STAMPING: A 1085 1967 <br>MARK LOGO: CGS <br>MAGNETIC: N = NO MAGNETIC MATERIAL <br>STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO <br>STABILITY: SURFACE MOTION <br>SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR <br>SATELLITE: SATELLITE OBSERVATIONS - July 29, 1992 <br> </table> <p> <h2>History</h2><table border=1><tr><td>Date </td><td>Condition </td><td>Report By</td></tr><tr><td>1967 </td><td>MONUMENTED </td><td>CGS</td></tr><tr><td>19880328</td><td>GOOD </td><td>NGS</td></tr><tr><td>19920729</td><td>GOOD </td><td>NGS</td></tr> </table> <p> <h2>STATION DESCRIPTION </h2> <p>DESCRIBED BY COAST AND GEODETIC SURVEY 1967 AT MIRANDA. AT MIRANDA, AT SOUTH FORK UNION HIGH SCHOOL, IN THE TOP OF THE NORTH END OF THE BOTTOM STEP OF THE CAFETERIA BUILDING, 140 FEET EAST OF THE CENTER LINE OF AVENUE OF THE GIANTS, AND ABOUT 4 FEET HIGHER THAN THE AVENUE. <p> <h2>STATION RECOVERY (1988) </h2> <p>RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1988 RECOVERED IN GOOD CONDITION. <p> <h2>STATION RECOVERY (1992) </h2> <p>RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1992 IN MIRANDA, AT SOUTH FORK UNION HIGH SCHOOL, IN THE NORTH END OF THE BOTTOM STEP OF THE ENTRANCE TO A CAFETERIA, 42.7 M (140.1 FT) EAST OF THE CENTERLINE OF THE AVENUE OF THE GIANTS, 2.5 M (8.2 FT) WEST OF THE EAST FACE OF THE BUILDING, AND 1.1 M (3.6 FT) ABOVE THE LEVEL OF THE AVENUE. LU1486 A 1086 http://www.geocaching.com/mark/details.asp?PID=LU1486 A 1086 Geocache Geocache A 1086 CGS CGS Unknown Cache Regular 1 1 United States California NGS Datasheet <h1>A 1086</h1> <b> PID </b> LU1486 <br> <b> STATE/COUNTY</b> CA/HUMBOLDT <br> <b> USGS QUAD </b> REDCREST (1969) <br> <p> <h2>Current Survey Control</h2> <hr> <b> NAD 83(1986)</b> 40 24 27. (N) 123 57 30. (W) SCALED <br> <b> NAVD 88 </b> 96.708 (meters) 317.28 (feet) ADJUSTED <br> <hr> <b> GEOID HEIGHT</b> -30.39 (meters) GEOID03 <br> <b> DYNAMIC HT </b> 96.660 (meters) 317.13 (feet) COMP <br> <b> MODELED GRAV</b> 980,124.6 (mgal) NAVD 88 <br> <p> <b> VERT ORDER </b> FIRST CLASS II <br> <p>The horizontal coordinates were scaled from a topographic map and have an estimated accuracy of +/- 6 seconds. <p>The orthometric height was determined by differential leveling and adjusted by the National Geodetic Survey in December 1992. <p>The geoid height was determined by GEOID03. <p>The dynamic height is computed by dividing the NAVD 88 geopotential number by the normal gravity value computed on the Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45 degrees latitude (g = 980.6199 gals.). <p>The modeled gravity was interpolated from observed gravity values. <p> <table border=1><tr><td> </td><td> North </td><td> East </td><td> Units</td><td> Estimated Accuracy</td></tr><tr><td>SPC CA 1 </td><td> 621,130. </td><td> 1,833,800. </td><td> MT</td><td> (+/- 180 meters Scaled)</td></tr> </table> <p> <h2>Superseded Survey Control</h2> <p> NAVD 88 (06/15/91) 96.720 (m) 317.32 (f) UNKNOWN 1 2 <br> NGVD 29 (12/02/92) 95.748 (m) 314.13 (f) ADJUSTED 1 2 <br> <p>Superseded values are not recommended for survey control. NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums. See file dsdata.txt to determine how the superseded data were derived. <p> <h2>Marker Information</h2>U.S. NATIONAL GRID SPATIAL ADDRESS: 10TDK186734(NAD 83) <br>MARKER: DB = BENCH MARK DISK <br>SETTING: 32 = SET IN A RETAINING WALL OR CONCRETE LEDGE <br>SP_SET: RETAINING WALL <br>STAMPING: A 1086 1967 <br>MARK LOGO: CGS <br>MAGNETIC: N = NO MAGNETIC MATERIAL <br>STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO <br>STABILITY: SURFACE MOTION <br>SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR <br>SATELLITE: SATELLITE OBSERVATIONS - July 28, 1992 <br> </table> <p> <h2>History</h2><table border=1><tr><td>Date </td><td>Condition </td><td>Report By</td></tr><tr><td>1967 </td><td>MONUMENTED </td><td>CGS</td></tr><tr><td>1969 </td><td>GOOD </td><td>USGS</td></tr><tr><td>19880228</td><td>GOOD </td><td>NGS</td></tr><tr><td>19920728</td><td>GOOD </td><td>NGS</td></tr> </table> <p> <h2>STATION DESCRIPTION </h2> <p>DESCRIBED BY COAST AND GEODETIC SURVEY 1967 12.6 MI N FROM MYERS FLAT. 12.55 MILES NORTH ALONG AVENUE OF THE GIANTS FROM MYERS FLAT OVERPASS AT MYERS FLAT, NEAR THE NORTH END OF A LONG CUT BANK, IN THE TOP AND 0.2 FOOT SOUTH OF THE NORTH END OF A CONCRETE RETAINING WALL FOR A CATCH BASIN, R40.58, 40 FEET WEST OF THE CENTER LINE OF THE HIGHWAY, AND ABOUT 3 1/2 FEET HIGHER THAN THE HIGHWAY. <p> <h2>STATION RECOVERY (1969) </h2> <p>RECOVERY NOTE BY US GEOLOGICAL SURVEY 1969 RECOVERED IN GOOD CONDITION. <p> <h2>STATION RECOVERY (1988) </h2> <p>RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1988 RECOVERED IN GOOD CONDITION. A NEW TO REACH FOLLOWS. 33.5 KM (20.80 MI) SOUTHERLY ALONG U.S. HIGHWAY 101 FROM THE FORTUNA OVERPASS IN FORTUNA. <p> <h2>STATION RECOVERY (1992) </h2> <p>RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1992 33.5 KM (20.80 MI) SOUTHERLY ALONG U.S. HIGHWAY 101 FROM THE JUNCTION OF THE NORTHWESTERN PACIFIC RAILROAD (FORTUNA OVERHEAD) IN FORTUNA, IN TOP OF AND 0.1 M (0.3 FT) SOUTH OF THE NORTH END OF A CONCRETE RETAINING WALL OF A CATCH BASIN AT MILEPOST 40.58, 12.2 M (40.0 FT) WEST OF THE CENTERLINE OF THE SOUTHBOUND LANES OF THE HIGHWAY, AND 1.1 M (3.6 FT) ABOVE THE LEVEL OF THE HIGHWAY. LV0240 A 1087 http://www.geocaching.com/mark/details.asp?PID=LV0240 A 1087 Geocache Geocache A 1087 CGS CGS Unknown Cache Regular 1 1 United States California NGS Datasheet <h1>A 1087</h1> <b> PID </b> LV0240 <br> <b> STATE/COUNTY</b> CA/HUMBOLDT <br> <b> USGS QUAD </b> FORTUNA (1972) <br> <p> <h2>Current Survey Control</h2> <hr> <b> NAD 83(1986)</b> 40 36 18. (N) 124 10 43. (W) SCALED <br> <b> NAVD 88 </b> 22.399 (meters) 73.49 (feet) ADJUSTED <br> <hr> <b> GEOID HEIGHT</b> -30.91 (meters) GEOID03 <br> <b> DYNAMIC HT </b> 22.388 (meters) 73.45 (feet) COMP <br> <b> MODELED GRAV</b> 980,164.6 (mgal) NAVD 88 <br> <p> <b> VERT ORDER </b> FIRST CLASS II <br> <p>The horizontal coordinates were scaled from a topographic map and have an estimated accuracy of +/- 6 seconds. <p>The orthometric height was determined by differential leveling and adjusted by the National Geodetic Survey in June 1991. <p>The geoid height was determined by GEOID03. <p>The dynamic height is computed by dividing the NAVD 88 geopotential number by the normal gravity value computed on the Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45 degrees latitude (g = 980.6199 gals.). <p>The modeled gravity was interpolated from observed gravity values. <p> <table border=1><tr><td> </td><td> North </td><td> East </td><td> Units</td><td> Estimated Accuracy</td></tr><tr><td>SPC CA 1 </td><td> 643,490. </td><td> 1,815,650. </td><td> MT</td><td> (+/- 180 meters Scaled)</td></tr> </table> <p> <h2>Superseded Survey Control</h2> <p> NGVD 29 (12/02/92) 21.405 (m) 70.23 (f) ADJUSTED 1 2 <br> <p>Superseded values are not recommended for survey control. NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums. See file dsdata.txt to determine how the superseded data were derived. <p> <h2>Marker Information</h2>U.S. NATIONAL GRID SPATIAL ADDRESS: 10TDK002955(NAD 83) <br>MARKER: DB = BENCH MARK DISK <br>SETTING: 31 = SET IN A PAVEMENT SUCH AS STREET, SIDEWALK, CURB, ETC. <br>SP_SET: BRIDGE WALKWAY <br>STAMPING: A 1087 1967 <br>MARK LOGO: CGS <br>STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL <br> </table> <p> <h2>History</h2><table border=1><tr><td>Date </td><td>Condition </td><td>Report By</td></tr><tr><td>1967 </td><td>MONUMENTED </td><td>CGS</td></tr><tr><td>19880224</td><td>GOOD </td><td>NGS</td></tr><tr><td>19920727</td><td>MARK NOT FOUND </td><td>NGS</td></tr> </table> <p> <h2>STATION DESCRIPTION </h2> <p>DESCRIBED BY COAST AND GEODETIC SURVEY 1967 0.7 MI N FROM FORTUNA. 0.7 MILE NORTH ALONG U.S. HIGHWAY 101 FROM FORTUNA OVERPASS AT FORTUNA, IN THE TOP OF THE NORTHWEST END OF THE NORTHEAST CONCRETE CURB OF PALMER BOULEVARD UNDERPASS NO. 4.112, 23 FEET NORTHEAST OF THE CENTER LINE OF THE HIGHWAY, AND ABOUT 1/2 FOOT HIGHER THAN THE HIGHWAY. <p> <h2>STATION RECOVERY (1988) </h2> <p>RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1988 RECOVERED IN GOOD CONDITION. <p> <h2>STATION RECOVERY (1992) </h2> <p>RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1992 THE BRIDGE CURB HAS BEEN REPLACED. ASSUMED DESTROYED. LV0306 A 1088 http://www.geocaching.com/mark/details.asp?PID=LV0306 A 1088 Geocache Geocache A 1088 CGS Unknown Cache Regular 1 1 United States California NGS Datasheet <h1>A 1088</h1> <b> PID </b> LV0306 <br> <b> STATE/COUNTY</b> CA/HUMBOLDT <br> <b> USGS QUAD </b> ARCATA NORTH (1972) <br> <p> <h2>Current Survey Control</h2> <hr> <b> NAD 83(1986)</b> 40 52 42. (N) 124 04 56. (W) SCALED <br> <b> NAVD 88 </b> 16.74 (+/-2cm) 54.9 (feet) VERTCON <br> <hr> <b> GEOID HEIGHT</b> -30.02 (meters) GEOID03 <br> <p> <b> VERT ORDER </b> FIRST CLASS II (See Below) <br> <p>The horizontal coordinates were scaled from a topographic map and have an estimated accuracy of +/- 6 seconds. <p>The NAVD 88 height was computed by applying the VERTCON shift value to the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.) The vertical order pertains to the NGVD 29 superseded value. <p>The geoid height was determined by GEOID03. <p> <table border=1><tr><td> </td><td> North </td><td> East </td><td> Units</td><td> Estimated Accuracy</td></tr><tr><td>SPC CA 1 </td><td> 673,640. </td><td> 1,824,530. </td><td> MT</td><td> (+/- 180 meters Scaled)</td></tr> </table> <p> <h2>Superseded Survey Control</h2> <p> NGVD 29 (??/??/??) 15.718 (m) 51.57 (f) ADJUSTED 1 2 <br> <p>Superseded values are not recommended for survey control. NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums. See file dsdata.txt to determine how the superseded data were derived. <p> <h2>Marker Information</h2>U.S. NATIONAL GRID SPATIAL ADDRESS: 10TDL088258(NAD 83) <br>MARKER: DB = BENCH MARK DISK <br>SETTING: 30 = SET IN A LIGHT STRUCTURE <br>SP_SET: CULVERT <br>STAMPING: A 1088 1967 <br>STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY <br> </table> <p> <h2>History</h2><table border=1><tr><td>Date </td><td>Condition </td><td>Report By</td></tr><tr><td>1967 </td><td>MONUMENTED </td><td>CGS</td></tr><tr><td>1971 </td><td>GOOD </td><td>NGS</td></tr><tr><td>19880418</td><td>MARK NOT FOUND </td><td>NGS</td></tr> </table> <p> <h2>STATION DESCRIPTION </h2> <p>DESCRIBED BY COAST AND GEODETIC SURVEY 1967 AT ARCATA. AT ARCATA, AT THE SOUTHEAST CORNER OF THE INTERSECTION OF U.S. HIGHWAY 101 AND SUNSET AVENUE, IN THE TOP AND 1.0 FOOT SOUTH OF THE NORTH END OF THE EAST CONCRETE HEAD WALL OF A LARGE CONCRETE BOX CULVERT 86.93 OVER JOLLY GIANT CREEK, 30 FEET EAST OF THE CENTER LINE OF THE EAST LANES OF THE HIGHWAY, 65 FEET SOUTH OF THE CENTER LINE OF THE AVENUE, 1.0 FOOT EAST OF A GUARDRAIL, AND ABOUT LEVEL WITH THE HIGHWAY. <p> <h2>STATION RECOVERY (1971) </h2> <p>RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1971 RECOVERED IN GOOD CONDITION. <p> <h2>STATION RECOVERY (1988) </h2> <p>RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1988 THERE IS NO LONGER A HEADWALL AT THIS LOCATION. LV0167 A 1089 http://www.geocaching.com/mark/details.asp?PID=LV0167 A 1089 Geocache Geocache A 1089 CGS CGS Unknown Cache Regular 1 1 United States California NGS Datasheet <h1>A 1089</h1> <b> PID </b> LV0167 <br> <b> STATE/COUNTY</b> CA/HUMBOLDT <br> <b> USGS QUAD </b> RODGERS PEAK (1966) <br> <p> <h2>Current Survey Control</h2> <hr> <b> NAD 83(1986)</b> 41 09 46. (N) 124 06 36. (W) SCALED <br> <b> NAVD 88 </b> 8.079 (meters) 26.51 (feet) ADJUSTED <br> <hr> <b> GEOID HEIGHT</b> -29.56 (meters) GEOID03 <br> <b> DYNAMIC HT </b> 8.076 (meters) 26.50 (feet) COMP <br> <b> MODELED GRAV</b> 980,235.3 (mgal) NAVD 88 <br> <p> <b> VERT ORDER </b> FIRST CLASS II <br> <p>The horizontal coordinates were scaled from a topographic map and have an estimated accuracy of +/- 6 seconds. <p>The orthometric height was determined by differential leveling and adjusted by the National Geodetic Survey in June 1991. <p>The geoid height was determined by GEOID03. <p>The dynamic height is computed by dividing the NAVD 88 geopotential number by the normal gravity value computed on the Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45 degrees latitude (g = 980.6199 gals.). <p>The modeled gravity was interpolated from observed gravity values. <p> <table border=1><tr><td> </td><td> North </td><td> East </td><td> Units</td><td> Estimated Accuracy</td></tr><tr><td>SPC CA 1 </td><td> 705,270. </td><td> 1,822,950. </td><td> MT</td><td> (+/- 180 meters Scaled)</td></tr> </table> <p> <h2>Superseded Survey Control</h2> <p> NGVD 29 (12/02/92) 7.066 (m) 23.18 (f) ADJUSTED 1 2 <br> <p>Superseded values are not recommended for survey control. NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums. See file dsdata.txt to determine how the superseded data were derived. <p> <h2>Marker Information</h2>U.S. NATIONAL GRID SPATIAL ADDRESS: 10TDL068574(NAD 83) <br>MARKER: DB = BENCH MARK DISK <br>SETTING: 31 = SET IN A PAVEMENT SUCH AS STREET, SIDEWALK, CURB, ETC. <br>SP_SET: BRIDGE WALKWAY <br>STAMPING: A 1089 1967 <br>MARK LOGO: CGS <br>STABILITY: D = MARK OF QUESTIONABLE OR UNKNOWN STABILITY <br> </table> <p> <h2>History</h2><table border=1><tr><td>Date </td><td>Condition </td><td>Report By</td></tr><tr><td>1967 </td><td>MONUMENTED </td><td>CGS</td></tr><tr><td>1988 </td><td>GOOD </td><td>NGS</td></tr> </table> <p> <h2>STATION DESCRIPTION </h2> <p>DESCRIBED BY COAST AND GEODETIC SURVEY 1967 8.4 MI N FROM TRINIDAD. 8.4 MILES NORTH ALONG U.S. HIGHWAY 101 FROM TRINIDAD UNDERPASS AT TRINIDAD, IN THE TOP AND 1.0 FOOT SOUTHWEST OF THE NORTHEAST END OF THE SOUTHEAST CONCRETE CURB OF BRIDGE NO. 4-27 OVER BIG LAGOON, AT HIGHWAY MILEAGE 109.26, 14 FEET SOUTHEAST OF THE CENTER LINE OF THE HIGHWAY, AND ABOUT 1 FOOT HIGHER THAN THE HIGHWAY. <p> <h2>STATION RECOVERY (1988) </h2> <p>RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1988 RECOVERED IN GOOD CONDITION. MX0611 A 115 http://www.geocaching.com/mark/details.asp?PID=MX0611 A 115 Geocache Geocache A 115 CGS Unknown Cache Regular 1 1 United States California NGS Datasheet <h1>A 115</h1> <b> PID </b> MX0611 <br> <b> STATE/COUNTY</b> CA/HUMBOLDT <br> <b> USGS QUAD </b> HOOPA (1979) <br> <p> <h2>Current Survey Control</h2> <hr> <b> NAD 83(1986)</b> 41 05 49. (N) 123 41 35. (W) SCALED <br> <b> NAVD 88 </b> 103.250 (meters) 338.75 (feet) ADJUSTED <br> <hr> <b> GEOID HEIGHT</b> -27.97 (meters) GEOID03 <br> <b> DYNAMIC HT </b> 103.199 (meters) 338.58 (feet) COMP <br> <b> MODELED GRAV</b> 980,135.6 (mgal) NAVD 88 <br> <p> <b> VERT ORDER </b> SECOND CLASS 0 <br> <p>The horizontal coordinates were scaled from a topographic map and have an estimated accuracy of +/- 6 seconds. <p>The orthometric height was determined by differential leveling and adjusted by the National Geodetic Survey in June 1991. <p>The geoid height was determined by GEOID03. <p>The dynamic height is computed by dividing the NAVD 88 geopotential number by the normal gravity value computed on the Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45 degrees latitude (g = 980.6199 gals.). <p>The modeled gravity was interpolated from observed gravity values. <p> <table border=1><tr><td> </td><td> North </td><td> East </td><td> Units</td><td> Estimated Accuracy</td></tr><tr><td>SPC CA 1 </td><td> 697,200. </td><td> 1,857,790. </td><td> MT</td><td> (+/- 180 meters Scaled)</td></tr> </table> <p> <h2>Superseded Survey Control</h2> <p> NGVD 29 (??/??/??) 102.232 (m) 335.41 (f) ADJUSTED 2 0 <br> <p>Superseded values are not recommended for survey control. NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums. See file dsdata.txt to determine how the superseded data were derived. <p> <h2>Marker Information</h2>U.S. NATIONAL GRID SPATIAL ADDRESS: 10TDL417497(NAD 83) <br>MARKER: DB = BENCH MARK DISK <br>SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT <br>SP_SET: SET IN TOP OF CONCRETE MONUMENT <br>STAMPING: 335.009 A 115 1932 <br>STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO <br>STABILITY: SURFACE MOTION <br> </table> <p> <h2>History</h2><table border=1><tr><td>Date </td><td>Condition </td><td>Report By</td></tr><tr><td>1932 </td><td>MONUMENTED </td><td>CGS</td></tr><tr><td>1935 </td><td>GOOD </td><td>NGS</td></tr> </table> <p> <h2>STATION DESCRIPTION </h2> <p>DESCRIBED BY NATIONAL GEODETIC SURVEY 1935 4.3 MI N FROM HOOPA. 4.3 MILES NORTH ALONG STATE HIGHWAY 96 FROM HOOPA, HUMBOLDT COUNTY, AT THE BEGINNING OF A CANYON ROAD, ON A HILLSIDE, 46.5 FEET EAST OF THE CENTERLINE OF THE NEW HIGHWAY, AND 3.5 FEET EAST OF A FENCE LINE. A STANDARD DISK, STAMPED 335.009 A 115 1932 AND SET IN THE TOP OF A CONCRETE POST PROJECTING 8 INCHES ABOVE GROUND. LV0612 A 1402 http://www.geocaching.com/mark/details.asp?PID=LV0612 A 1402 Geocache Geocache A 1402 NGS NGS Unknown Cache Regular 1 1 United States California NGS Datasheet <h1>A 1402</h1> <b> PID </b> LV0612 <br> <b> STATE/COUNTY</b> CA/HUMBOLDT <br> <b> USGS QUAD </b> ARCATA NORTH (1972) <br> <p> <h2>Current Survey Control</h2> <hr> <b> NAD 83(1986)</b> 40 52 44. (N) 124 04 55. (W) SCALED <br> <b> NAVD 88 </b> 18.659 (meters) 61.22 (feet) ADJUSTED <br> <hr> <b> GEOID HEIGHT</b> -30.02 (meters) GEOID03 <br> <b> DYNAMIC HT </b> 18.652 (meters) 61.19 (feet) COMP <br> <b> MODELED GRAV</b> 980,210.9 (mgal) NAVD 88 <br> <p> <b> VERT ORDER </b> FIRST CLASS II <br> <p>The horizontal coordinates were scaled from a topographic map and have an estimated accuracy of +/- 6 seconds. <p>The orthometric height was determined by differential leveling and adjusted by the National Geodetic Survey in June 1991. <p>The geoid height was determined by GEOID03. <p>The dynamic height is computed by dividing the NAVD 88 geopotential number by the normal gravity value computed on the Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45 degrees latitude (g = 980.6199 gals.). <p>The modeled gravity was interpolated from observed gravity values. <p> <table border=1><tr><td> </td><td> North </td><td> East </td><td> Units</td><td> Estimated Accuracy</td></tr><tr><td>SPC CA 1 </td><td> 673,700. </td><td> 1,824,550. </td><td> MT</td><td> (+/- 180 meters Scaled)</td></tr> </table> <p> <h2>Superseded Survey Control</h2> <p> NGVD 29 (12/02/92) 17.634 (m) 57.85 (f) ADJUSTED 1 2 <br> <p>Superseded values are not recommended for survey control. NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums. See file dsdata.txt to determine how the superseded data were derived. <p> <h2>Marker Information</h2>U.S. NATIONAL GRID SPATIAL ADDRESS: 10TDL088258(NAD 83) <br>MARKER: DV = VERTICAL CONTROL DISK <br>SETTING: 38 = SET IN THE ABUTMENT OR PIER OF A LARGE BRIDGE <br>SP_SET: PIER <br>STAMPING: A 1402 1988 <br>MARK LOGO: NGS <br>STABILITY: A = MOST RELIABLE AND EXPECTED TO HOLD <br>STABILITY: POSITION/ELEVATION WELL <br> </table> <p> <h2>History</h2><table border=1><tr><td>Date </td><td>Condition </td><td>Report By</td></tr><tr><td>1988 </td><td>MONUMENTED </td><td>NGS</td></tr><tr><td>19880216</td><td>GOOD </td><td>NGS</td></tr> </table> <p> <h2>STATION DESCRIPTION </h2> <p>DESCRIBED BY NATIONAL GEODETIC SURVEY 1988 IN ARCATA. IN ARCATA, AT THE INTERSECTION OF U.S. HIGHWAY 101 AND SUNSET AVENUE, SET VERTICALLY IN THE SOUTH FACE OF THE MOST NORTHERLY 1 OF 2 COLUMNS OF THE CENTER PIER OF THE AVENUE OVERPASS OF THE HIGHWAY, 12.0 M (39.4 FT) WEST OF THE CENTERLINE OF THE NORTHBOUND LANES OF THE HIGHWAY, 10.7 M (35.1 FT) EAST OF THE CENTERLINE OF THE SOUTHBOUND LANES OF THE HIGHWAY, AND 4.6 M (15.1 FT) NORTH OF THE CENTER OF THE AVENUE. THE MARK IS 1.3 M ABOVE THE GROUND. <p> <h2>STATION RECOVERY (1988) </h2> <p>RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1988 RECOVERED IN GOOD CONDITION. LU1718 A 1403 http://www.geocaching.com/mark/details.asp?PID=LU1718 A 1403 Geocache Geocache A 1403 NGS NGS Unknown Cache Regular 1 1 United States California NGS Datasheet <h1>A 1403</h1> <b> PID </b> LU1718 <br> <b> STATE/COUNTY</b> CA/HUMBOLDT <br> <b> USGS QUAD </b> LORD-ELLIS SUMMIT (1973) <br> <p> <h2>Current Survey Control</h2> <hr> <b> NAD 83(1986)</b> 40 56 26. (N) 123 52 15. (W) SCALED <br> <b> NAVD 88 </b> 624.633 (meters) 2049.32 (feet) ADJUSTED <br> <hr> <b> GEOID HEIGHT</b> -28.77 (meters) GEOID03 <br> <b> DYNAMIC HT </b> 624.304 (meters) 2048.24 (feet) COMP <br> <b> MODELED GRAV</b> 980,077.2 (mgal) NAVD 88 <br> <p> <b> VERT ORDER </b> FIRST CLASS II <br> <p>The horizontal coordinates were scaled from a topographic map and have an estimated accuracy of +/- 6 seconds. <p>The orthometric height was determined by differential leveling and adjusted by the National Geodetic Survey in June 1991. <p>The geoid height was determined by GEOID03. <p>The dynamic height is computed by dividing the NAVD 88 geopotential number by the normal gravity value computed on the Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45 degrees latitude (g = 980.6199 gals.). <p>The modeled gravity was interpolated from observed gravity values. <p> <table border=1><tr><td> </td><td> North </td><td> East </td><td> Units</td><td> Estimated Accuracy</td></tr><tr><td>SPC CA 1 </td><td> 680,140. </td><td> 1,842,480. </td><td> MT</td><td> (+/- 180 meters Scaled)</td></tr> </table> <p> <h2>Superseded Survey Control</h2> <p> NGVD 29 (12/02/92) 623.625 (m) 2046.01 (f) ADJUSTED 1 2 <br> <p>Superseded values are not recommended for survey control. NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums. See file dsdata.txt to determine how the superseded data were derived. <p> <h2>Marker Information</h2>U.S. NATIONAL GRID SPATIAL ADDRESS: 10TDL266325(NAD 83) <br>MARKER: DB = BENCH MARK DISK <br>SETTING: 66 = SET IN ROCK OUTCROP <br>SP_SET: BEDROCK <br>STAMPING: A 1403 1988 <br>MARK LOGO: NGS <br>STABILITY: A = MOST RELIABLE AND EXPECTED TO HOLD <br>STABILITY: POSITION/ELEVATION WELL <br> </table> <p> <h2>History</h2><table border=1><tr><td>Date </td><td>Condition </td><td>Report By</td></tr><tr><td>1988 </td><td>MONUMENTED </td><td>NGS</td></tr> </table> <p> <h2>STATION DESCRIPTION </h2> <p>DESCRIBED BY NATIONAL GEODETIC SURVEY 1988 26.3 KM (16.35 MI) EAST FROM ARCATA. 26.3 KM (16.35 MI) EASTERLY ALONG STATE HIGHWAY 299 FROM THE JUNCTION OF U.S. HIGHWAY 101 IN ARCATA, NEAR THE CENTER OF THE NORTHWESTERN 1/2 OF AN EXPOSED AREA OF BEDROCK IN A HIGHWAY CUT, 1.5 KM (0.95 MI) NORTHWEST OF LORD ELLIS-SUMMIT, 9.3 M (30.5 FT) NORTHEAST OF THE CENTERLINE OF THE HIGHWAY, AND 9.1 M (29.9 FT) SOUTHEAST OF THE NORTHWEST EDGE OF THE EXPOSED BEDROCK. THE MARK IS 0.55 METERS NW FROM A WITNESS POST THE MARK IS 2.0 M ABOVE THE HIGHWAY. LU1876 A 1404 X http://www.geocaching.com/mark/details.asp?PID=LU1876 A 1404 X Geocache Geocache A 1404 X NGS NGS Unknown Cache Regular 1 1 United States California NGS Datasheet <h1>A 1404 X</h1> <b> PID </b> LU1876 <br> <b> STATE/COUNTY</b> CA/HUMBOLDT <br> <b> USGS QUAD </b> REDCREST (1969) <br> <p> <h2>Current Survey Control</h2> <hr> <b> NAD 83(1986)</b> 40 23 10. (N) 123 55 53. (W) SCALED <br> <b> NAVD 88 </b> 111.452 (meters) 365.66 (feet) ADJUSTED <br> <hr> <b> GEOID HEIGHT</b> -30.35 (meters) GEOID03 <br> <b> DYNAMIC HT </b> 111.396 (meters) 365.47 (feet) COMP <br> <b> MODELED GRAV</b> 980,124.3 (mgal) NAVD 88 <br> <p> <b> VERT ORDER </b> FIRST CLASS II <br> <p>The horizontal coordinates were scaled from a topographic map and have an estimated accuracy of +/- 6 seconds. <p>The orthometric height was determined by differential leveling and adjusted by the National Geodetic Survey in December 1992. <p>The geoid height was determined by GEOID03. <p>The dynamic height is computed by dividing the NAVD 88 geopotential number by the normal gravity value computed on the Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45 degrees latitude (g = 980.6199 gals.). <p>The modeled gravity was interpolated from observed gravity values. <p> <table border=1><tr><td> </td><td> North </td><td> East </td><td> Units</td><td> Estimated Accuracy</td></tr><tr><td>SPC CA 1 </td><td> 618,710. </td><td> 1,836,030. </td><td> MT</td><td> (+/- 180 meters Scaled)</td></tr> </table> <p> <h2>Superseded Survey Control</h2> <p> NAVD 88 (06/15/91) 111.465 (m) 365.70 (f) UNKNOWN 1 2 <br> NGVD 29 (12/02/92) 110.495 (m) 362.52 (f) ADJUSTED 1 2 <br> <p>Superseded values are not recommended for survey control. NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums. See file dsdata.txt to determine how the superseded data were derived. <p> <h2>Marker Information</h2>U.S. NATIONAL GRID SPATIAL ADDRESS: 10TDK209710(NAD 83) <br>MARKER: I = METAL ROD <br>SETTING: 49 = STAINLESS STEEL ROD W/O SLEEVE (10 FT.+) <br>SP_SET: STAINLESS STEEL ROD <br>STAMPING: A 1404 X 1988 <br>MARK LOGO: NGS <br>PROJECTION: FLUSH <br>MAGNETIC: I = MARKER IS A STEEL ROD <br>STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL <br>SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR <br>SATELLITE: SATELLITE OBSERVATIONS - July 25, 1994 <br>ROD/PIPE-DEPTH: 3.7 meters <br> </table> <p> <h2>History</h2><table border=1><tr><td>Date </td><td>Condition </td><td>Report By</td></tr><tr><td>1988 </td><td>MONUMENTED </td><td>NGS</td></tr><tr><td>19920728</td><td>GOOD </td><td>NGS</td></tr><tr><td>19940725</td><td>GOOD </td><td>CADT</td></tr> </table> <p> <h2>STATION DESCRIPTION </h2> <p>DESCRIBED BY NATIONAL GEODETIC SURVEY 1988 37.1 KM (23.05 MI) SOUTHERLY ALONG U.S. HIGHWAY 101 FROM THE FORTUNA OVERPASS IN FORTUNA, AT A PAVED TURNOUT, 27.2 M (89.2 FT) NORTH OF THE CENTER OF A STORM DRAIN, 15.2 M (49.9 FT) WEST OF THE CENTERLINE OF THE SOUTHBOUND LANES OF THE HIGHWAY, 4.2 M (13.8 FT) WEST OF THE CURB OF THE TURNOUT, 0.6 M (2.0 FT) BELOW THE LEVEL OF THE HIGHWAY, AND 0.3 M (1.0 FT) EAST OF A WITNESS POST. NOTE--ACCESS TO THE DATUM POINT IS THROUGH A 5-INCH LOGO CAP. <p> <h2>STATION RECOVERY (1992) </h2> <p>RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1992 37.1 KM (23.05 MI) SOUTHERLY ALONG U.S. HIGHWAY 101 FROM THE JUNCTION OF THE NORTHWESTERN PACIFIC RAILROAD (FORTUNA OVERHEAD) IN FORTUNA, AT A PAVED TURNOUT, 27.2 M (89.2 FT) NORTH OF THE CENTER OF A STORM DRAIN, 15.2 M (49.9 FT) WEST OF THE CENTERLINE OF THE SOUTHBOUND LANES OF THE HIGHWAY, 4.2 M (13.8 FT) WEST OF A CURB OF THE TURNOUT, 0.6 M (2.0 FT) BELOW THE LEVEL OF THE HIGHWAY, AND 0.3 M (1.0 FT) EAST OF A WITNESS POST. NOTE--ACCESS TO THE DATUM POINT IS THROUGH A 5-INCH LOGO CAP. THIS MARK WAS CARRIED ON L25053 1988, PAGE 4, AS A 1404 INSTEAD OF A 1404 X. <p> <h2>STATION RECOVERY (1994) </h2> <p>RECOVERY NOTE BY CALTRANS 1994 (GAA) RECOVERED IN GOOD CONDITION. NOTE--THE FOLLOWING INFORMATION-- THE STORM DRAIN IS AN 8 IN. OVERSIDE DRAIN AT THE SOUTHWEST CORNER OF THE PAVED TURNOUT. THE WITNESS POST HAS BEEN CUT DOWN BY A CALIF. DEPT. OF TRANSPORTATION GRASS MOWER. ADDITIONAL INFORMATION - THE MARK IS 229 FT (69.8 M) SOUTHEAST FROM THE SOUTHWEST CULVERT MARKER AT HIGHWAY POSTMILE 38.36, AS MEASURED ALONG THE SOUTHWEST EDGE OF PAVEMENT OF THE HIGHWAY, 230 FT (70.1 M) NORTHWEST FROM THE SOUTHWEST CULVERT MARKER AT HIGHWAY POSTMILE 38.29, AS MEASURED ALONG THE SOUTHWEST EDGE OF PAVEMENT OF THE HIGHWAY, AT HIGHWAY POSTMILE 38.33. LV0578 A 1405 http://www.geocaching.com/mark/details.asp?PID=LV0578 A 1405 Geocache Geocache A 1405 NGS NGS Unknown Cache Regular 1 1 United States California NGS Datasheet <h1>A 1405</h1> <b> PID </b> LV0578 <br> <b> STATE/COUNTY</b> CA/HUMBOLDT <br> <b> USGS QUAD </b> FERN CANYON (1966) <br> <p> <h2>Current Survey Control</h2> <hr> <b> NAD 83(1986)</b> 41 26 44. (N) 124 02 24. (W) SCALED <br> <b> NAVD 88 </b> 235.764 (meters) 773.50 (feet) ADJUSTED <br> <hr> <b> GEOID HEIGHT</b> -28.75 (meters) GEOID03 <br> <b> DYNAMIC HT </b> 235.665 (meters) 773.18 (feet) COMP <br> <b> MODELED GRAV</b> 980,201.6 (mgal) NAVD 88 <br> <p> <b> VERT ORDER </b> FIRST CLASS II <br> <p>The horizontal coordinates were scaled from a topographic map and have an estimated accuracy of +/- 6 seconds. <p>The orthometric height was determined by differential leveling and adjusted by the National Geodetic Survey in June 1991. <p>The geoid height was determined by GEOID03. <p>The dynamic height is computed by dividing the NAVD 88 geopotential number by the normal gravity value computed on the Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45 degrees latitude (g = 980.6199 gals.). <p>The modeled gravity was interpolated from observed gravity values. <p> <table border=1><tr><td> </td><td> North </td><td> East </td><td> Units</td><td> Estimated Accuracy</td></tr><tr><td>SPC CA 1 </td><td> 736,530. </td><td> 1,829,550. </td><td> MT</td><td> (+/- 180 meters Scaled)</td></tr> </table> <p> <h2>Superseded Survey Control</h2> <p>No superseded survey control is available for this station. <p> <h2>Marker Information</h2>U.S. NATIONAL GRID SPATIAL ADDRESS: 10TDL131887(NAD 83) <br>MARKER: I = METAL ROD <br>SETTING: 49 = STAINLESS STEEL ROD W/O SLEEVE (10 FT.+) <br>SP_SET: STAINLESS STEEL ROD <br>STAMPING: A 1405 1988 <br>MARK LOGO: NGS <br>PROJECTION: FLUSH <br>STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL <br>ROD/PIPE-DEPTH: 3.1 meters <br> </table> <p> <h2>History</h2><table border=1><tr><td>Date </td><td>Condition </td><td>Report By</td></tr><tr><td>1988 </td><td>MONUMENTED </td><td>NGS</td></tr> </table> <p> <h2>STATION DESCRIPTION </h2> <p>DESCRIBED BY NATIONAL GEODETIC SURVEY 1988 19.3 KM (12.00 MI) NORTH FROM ORICK. 19.3 KM (12.00 MI) NORTHERLY ALONG U.S. HIGHWAY 101 FROM THE POST OFFICE IN ORICK, 12.3 M (40.4 FT) NORTHWEST OF THE CENTERLINE OF THE HIGHWAY, 6.0 M (19.7 FT) SOUTHWEST OF THE CENTER OF CATCH BASIN NUMBER 133.29, 3.7 M (12.1 FT) NORTH OF THE NORTH END OF A FREDERICK G. COTTRELL MEMORIAL SIGN, AND 1.8 M (5.9 FT) SOUTH OF A ROCK WITH A PLAQUE ATTACHED. NOTE--ACCESS TO DATUM POINT IS HAD THROUGH A 5-INCH LOGO CAP. THE MARK IS 0.3 METERS SE FROM A WITNESS POST THE MARK IS ABOVE LEVEL WITH THE HIGHWAY. LU1741 A 1406 http://www.geocaching.com/mark/details.asp?PID=LU1741 A 1406 Geocache Geocache A 1406 NGS NGS Unknown Cache Regular 1 1 United States California NGS Datasheet <h1>A 1406</h1> <b> PID </b> LU1741 <br> <b> STATE/COUNTY</b> CA/HUMBOLDT <br> <b> USGS QUAD </b> WILLOW CREEK (1979) <br> <p> <h2>Current Survey Control</h2> <hr> <b> NAD 83(1986)</b> 40 54 18. (N) 123 44 42. (W) SCALED <br> <b> NAVD 88 </b> 712.278 (meters) 2336.87 (feet) ADJUSTED <br> <hr> <b> GEOID HEIGHT</b> -28.18 (meters) GEOID03 <br> <b> DYNAMIC HT </b> 711.866 (meters) 2335.51 (feet) COMP <br> <b> MODELED GRAV</b> 980,022.6 (mgal) NAVD 88 <br> <p> <b> VERT ORDER </b> FIRST CLASS II <br> <p>The horizontal coordinates were scaled from a topographic map and have an estimated accuracy of +/- 6 seconds. <p>The orthometric height was determined by differential leveling and adjusted by the National Geodetic Survey in June 1991. <p>The geoid height was determined by GEOID03. <p>The dynamic height is computed by dividing the NAVD 88 geopotential number by the normal gravity value computed on the Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45 degrees latitude (g = 980.6199 gals.). <p>The modeled gravity was interpolated from observed gravity values. <p> <table border=1><tr><td> </td><td> North </td><td> East </td><td> Units</td><td> Estimated Accuracy</td></tr><tr><td>SPC CA 1 </td><td> 675,980. </td><td> 1,853,000. </td><td> MT</td><td> (+/- 180 meters Scaled)</td></tr> </table> <p> <h2>Superseded Survey Control</h2> <p>No superseded survey control is available for this station. <p> <h2>Marker Information</h2>U.S. NATIONAL GRID SPATIAL ADDRESS: 10TDL372284(NAD 83) <br>MARKER: DB = BENCH MARK DISK <br>SETTING: 66 = SET IN ROCK OUTCROP <br>SP_SET: BEDROCK <br>STAMPING: A 1406 1988 <br>MARK LOGO: NGS <br>STABILITY: A = MOST RELIABLE AND EXPECTED TO HOLD <br>STABILITY: POSITION/ELEVATION WELL <br> </table> <p> <h2>History</h2><table border=1><tr><td>Date </td><td>Condition </td><td>Report By</td></tr><tr><td>1988 </td><td>MONUMENTED </td><td>NGS</td></tr> </table> <p> <h2>STATION DESCRIPTION </h2> <p>DESCRIBED BY NATIONAL GEODETIC SURVEY 1988 12.8 KM (7.95 MI) WEST FROM WILLOW CREEK. 12.8 KM (7.95 MI) WESTERLY ALONG STATE HIGHWAY 299 FROM THE JUNCTION OF STATE HIGHWAY 96 IN WILLOW CREEK, IN A 7 BY 14 FOOT EXPOSED AREA OF BEDROCK IN A HIGHWAY CUT, AT A UTILITY LINE CROSSING THE HIGHWAY, 0.1 KM (0.05 MI) WEST OF THE INTERSECTION OF A DIRT ROAD LEADING NORTH, 6.8 M (22.3 FT) NORTH OF THE CENTERLINE OF THE HIGHWAY, AND 0.7 M (2.3 FT) EAST OF THE WEST END OF THE EXPOSED BEDROCK. THE MARK IS 0.3 METERS NW FROM A WITNESS POST THE MARK IS 0.5 M ABOVE THE HIGHWAY. LV1183 A 1463 http://www.geocaching.com/mark/details.asp?PID=LV1183 A 1463 Geocache Geocache A 1463 NGS NGS Unknown Cache Regular 1 1 United States California NGS Datasheet <h1>A 1463</h1> <b> PID </b> LV1183 <br> <b> STATE/COUNTY</b> CA/HUMBOLDT <br> <b> USGS QUAD </b> FORTUNA (1972) <br> <p> <h2>Current Survey Control</h2> <hr> <b> NAD 83(1986)</b> 40 37 16. (N) 124 12 38. (W) SCALED <br> <b> NAVD 88 </b> 17.940 (meters) 58.86 (feet) ADJUSTED <br> <hr> <b> GEOID HEIGHT</b> -31.00 (meters) GEOID03 <br> <b> DYNAMIC HT </b> 17.931 (meters) 58.83 (feet) COMP <br> <b> MODELED GRAV</b> 980,168.4 (mgal) NAVD 88 <br> <p> <b> VERT ORDER </b> FIRST CLASS II <br> <p>The horizontal coordinates were scaled from a topographic map and have an estimated accuracy of +/- 6 seconds. <p>The orthometric height was determined by differential leveling and adjusted by the National Geodetic Survey in December 1992. <p>The geoid height was determined by GEOID03. <p>The dynamic height is computed by dividing the NAVD 88 geopotential number by the normal gravity value computed on the Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45 degrees latitude (g = 980.6199 gals.). <p>The modeled gravity was interpolated from observed gravity values. <p> <table border=1><tr><td> </td><td> North </td><td> East </td><td> Units</td><td> Estimated Accuracy</td></tr><tr><td>SPC CA 1 </td><td> 645,350. </td><td> 1,812,990. </td><td> MT</td><td> (+/- 180 meters Scaled)</td></tr> </table> <p> <h2>Superseded Survey Control</h2> <p> NGVD 29 (12/02/92) 16.952 (m) 55.62 (f) ADJUSTED 1 2 <br> <p>Superseded values are not recommended for survey control. NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums. See file dsdata.txt to determine how the superseded data were derived. <p> <h2>Marker Information</h2>U.S. NATIONAL GRID SPATIAL ADDRESS: 10TCK976974(NAD 83) <br>MARKER: DV = VERTICAL CONTROL DISK <br>SETTING: 38 = SET IN THE ABUTMENT OR PIER OF A LARGE BRIDGE <br>SP_SET: PIER <br>STAMPING: A 1463 1992 <br>MARK LOGO: NGS <br>MAGNETIC: N = NO MAGNETIC MATERIAL <br>STABILITY: A = MOST RELIABLE AND EXPECTED TO HOLD <br>STABILITY: POSITION/ELEVATION WELL <br>SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR <br>SATELLITE: SATELLITE OBSERVATIONS - 1992 <br> </table> <p> <h2>History</h2><table border=1><tr><td>Date </td><td>Condition </td><td>Report By</td></tr><tr><td>1992 </td><td>MONUMENTED </td><td>NGS</td></tr> </table> <p> <h2>STATION DESCRIPTION </h2> <p>DESCRIBED BY NATIONAL GEODETIC SURVEY 1992 4.4 KM (2.75 MI) NORTHERLY ALONG U.S. HIGHWAY 101 FROM THE JUNCTION OF THE NORTHWESTERN PACIFIC RAILROAD (FORTUNA OVERHEAD) IN FORTUNA, SET VERTICALLY IN THE SOUTH FACE OF THE MOST SOUTHERLY CONCRETE COLUMN OF THE FIRST PIER EAST OF THE WEST ABUTMENT OF A HIGHWAY OVERPASS OF SINGLEY ROAD, 13.3 M (43.6 FT) SOUTH OF THE CENTER OF THE HIGHWAY, 7.1 M (23.3 FT) WEST OF THE ROAD CENTERLINE, AND 1.4 M (4.6 FT) ABOVE THE LEVEL OF THE ROAD. LU2314 A 1464 http://www.geocaching.com/mark/details.asp?PID=LU2314 A 1464 Geocache Geocache A 1464 NGS NGS Unknown Cache Regular 1 1 United States California NGS Datasheet <h1>A 1464</h1> <b> PID </b> LU2314 <br> <b> STATE/COUNTY</b> CA/HUMBOLDT <br> <b> USGS QUAD </b> BRICELAND (1969) <br> <p> <h2>Current Survey Control</h2> <hr> <b> NAD 83(1986)</b> 40 05 20. (N) 123 56 39. (W) SCALED <br> <b> NAVD 88 </b> 382.252 (meters) 1254.11 (feet) ADJUSTED <br> <hr> <b> GEOID HEIGHT</b> -30.46 (meters) GEOID03 <br> <b> DYNAMIC HT </b> 382.041 (meters) 1253.41 (feet) COMP <br> <b> MODELED GRAV</b> 980,063.1 (mgal) NAVD 88 <br> <p> <b> VERT ORDER </b> FIRST CLASS II <br> <p>The horizontal coordinates were scaled from a topographic map and have an estimated accuracy of +/- 6 seconds. <p>The orthometric height was determined by differential leveling and adjusted by the National Geodetic Survey in December 1992. <p>The geoid height was determined by GEOID03. <p>The dynamic height is computed by dividing the NAVD 88 geopotential number by the normal gravity value computed on the Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45 degrees latitude (g = 980.6199 gals.). <p>The modeled gravity was interpolated from observed gravity values. <p> <table border=1><tr><td> </td><td> North </td><td> East </td><td> Units</td><td> Estimated Accuracy</td></tr><tr><td>SPC CA 1 </td><td> 585,740. </td><td> 1,834,210. </td><td> MT</td><td> (+/- 180 meters Scaled)</td></tr> </table> <p> <h2>Superseded Survey Control</h2> <p> NGVD 29 (12/02/92) 381.317 (m) 1251.04 (f) ADJUSTED 1 2 <br> <p>Superseded values are not recommended for survey control. NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums. See file dsdata.txt to determine how the superseded data were derived. <p> <h2>Marker Information</h2>U.S. NATIONAL GRID SPATIAL ADDRESS: 10TDK195380(NAD 83) <br>MARKER: I = METAL ROD <br>SETTING: 49 = STAINLESS STEEL ROD W/O SLEEVE (10 FT.+) <br>SP_SET: STAINLESS STEEL ROD <br>STAMPING: A 1464 1992 <br>MARK LOGO: NGS <br>PROJECTION: PROJECTING 2 CENTIMETERS <br>MAGNETIC: I = MARKER IS A STEEL ROD <br>STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL <br>SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR <br>SATELLITE: SATELLITE OBSERVATIONS - 1992 <br>ROD/PIPE-DEPTH: 6.0 meters <br> </table> <p> <h2>History</h2><table border=1><tr><td>Date </td><td>Condition </td><td>Report By</td></tr><tr><td>1992 </td><td>MONUMENTED </td><td>NGS</td></tr> </table> <p> <h2>STATION DESCRIPTION </h2> <p>DESCRIBED BY NATIONAL GEODETIC SURVEY 1992 0.1 KM (0.05 MI) NORTHERLY ALONG REDWOOD DRIVE FROM THE POST OFFICE IN REDWAY, THENCE 16.3 KM (10.10 MI) WESTERLY ALONG BRICELAND ROAD, 26.3 M (86.3 FT) NORTH OF THE ROAD CENTERLINE, 22.0 M (72.2 FT) NORTH OF THE EXTENDED CENTER OF ETTERSBURG ROAD, 7.0 M (23.0 FT) NORTHEAST OF THE CENTER OF A GRAVELED ROAD, 1.6 M (5.2 FT) NORTHEAST OF A 36-INCH PINE TREE, 1.3 M (4.3 FT) SOUTHEAST OF A 20-INCH PINE TREE, 0.3 M (1.0 FT) BELOW THE LEVEL OF THE GRAVELED ROAD, AND 0.3 M (1.0 FT) SOUTH OF A WITNESS POST. NOTE--ACCESS TO THE DATUM POINT IS THROUGH A 5-INCH LOGO CAP. LV1202 A 1465 http://www.geocaching.com/mark/details.asp?PID=LV1202 A 1465 Geocache Geocache A 1465 NGS NGS Unknown Cache Regular 1 1 United States California NGS Datasheet <h1>A 1465</h1> <b> PID </b> LV1202 <br> <b> STATE/COUNTY</b> CA/HUMBOLDT <br> <b> USGS QUAD </b> HONEYDEW (1970) <br> <p> <h2>Current Survey Control</h2> <hr> <b> NAD 83(1986)</b> 40 13 04. (N) 124 06 40. (W) SCALED <br> <b> NAVD 88 </b> 203.268 (meters) 666.89 (feet) ADJUSTED <br> <hr> <b> GEOID HEIGHT</b> -30.61 (meters) GEOID03 <br> <b> DYNAMIC HT </b> 203.159 (meters) 666.53 (feet) COMP <br> <b> MODELED GRAV</b> 980,085.5 (mgal) NAVD 88 <br> <p> <b> VERT ORDER </b> FIRST CLASS II <br> <p>The horizontal coordinates were scaled from a topographic map and have an estimated accuracy of +/- 6 seconds. <p>The orthometric height was determined by differential leveling and adjusted by the National Geodetic Survey in December 1992. <p>The geoid height was determined by GEOID03. <p>The dynamic height is computed by dividing the NAVD 88 geopotential number by the normal gravity value computed on the Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45 degrees latitude (g = 980.6199 gals.). <p>The modeled gravity was interpolated from observed gravity values. <p> <table border=1><tr><td> </td><td> North </td><td> East </td><td> Units</td><td> Estimated Accuracy</td></tr><tr><td>SPC CA 1 </td><td> 600,370. </td><td> 1,820,320. </td><td> MT</td><td> (+/- 180 meters Scaled)</td></tr> </table> <p> <h2>Superseded Survey Control</h2> <p> NGVD 29 (12/02/92) 202.322 (m) 663.78 (f) ADJUSTED 1 2 <br> <p>Superseded values are not recommended for survey control. NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums. See file dsdata.txt to determine how the superseded data were derived. <p> <h2>Marker Information</h2>U.S. NATIONAL GRID SPATIAL ADDRESS: 10TDK054525(NAD 83) <br>MARKER: DV = VERTICAL CONTROL DISK <br>SETTING: 66 = SET IN ROCK OUTCROP <br>SP_SET: BEDROCK <br>STAMPING: A 1465 1992 <br>MARK LOGO: NGS <br>MAGNETIC: N = NO MAGNETIC MATERIAL <br>STABILITY: A = MOST RELIABLE AND EXPECTED TO HOLD <br>STABILITY: POSITION/ELEVATION WELL <br>SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR <br>SATELLITE: SATELLITE OBSERVATIONS - 1992 <br> </table> <p> <h2>History</h2><table border=1><tr><td>Date </td><td>Condition </td><td>Report By</td></tr><tr><td>1992 </td><td>MONUMENTED </td><td>NGS</td></tr> </table> <p> <h2>STATION DESCRIPTION </h2> <p>DESCRIBED BY NATIONAL GEODETIC SURVEY 1992 4.0 KM (2.50 MI) SOUTHERLY ALONG WILDER RIDGE ROAD FROM THE JUNCTION OF MATTOLE ROAD IN HONEYDEW, NEAR THE SOUTH END OF A 8 BY 20-FOOT AREA OF OUTCROPPING BEDROCK ON THE WEST SIDE OF A HILL, 28.0 M (91.9 FT) WEST OF THE ROAD CENTER, 1.7 M (5.6 FT) NORTH OF THE SOUTH END OF THE OUTCROP, 0.3 M (1.0 FT) BELOW THE LEVEL OF THE ROAD, AND 0.3 M (1.0 FT) SOUTHEAST OF A WITNESS POST. LV1252 A 1466 http://www.geocaching.com/mark/details.asp?PID=LV1252 A 1466 Geocache Geocache A 1466 NGS NGS Unknown Cache Regular 1 1 United States California NGS Datasheet <h1>A 1466</h1> <b> PID </b> LV1252 <br> <b> STATE/COUNTY</b> CA/HUMBOLDT <br> <b> USGS QUAD </b> CAPE MENDOCINO (1969) <br> <p> <h2>Current Survey Control</h2> <hr> <b> NAD 83(1986)</b> 40 24 25. (N) 124 23 28. (W) SCALED <br> <b> NAVD 88 </b> 9.362 (meters) 30.72 (feet) ADJUSTED <br> <hr> <b> GEOID HEIGHT</b> -31.46 (meters) GEOID03 <br> <b> DYNAMIC HT </b> 9.358 (meters) 30.70 (feet) COMP <br> <b> MODELED GRAV</b> 980,185.6 (mgal) NAVD 88 <br> <p> <b> VERT ORDER </b> FIRST CLASS II <br> <p>The horizontal coordinates were scaled from a topographic map and have an estimated accuracy of +/- 6 seconds. <p>The orthometric height was determined by differential leveling and adjusted by the National Geodetic Survey in December 1992. <p>The geoid height was determined by GEOID03. <p>The dynamic height is computed by dividing the NAVD 88 geopotential number by the normal gravity value computed on the Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45 degrees latitude (g = 980.6199 gals.). <p>The modeled gravity was interpolated from observed gravity values. <p> <table border=1><tr><td> </td><td> North </td><td> East </td><td> Units</td><td> Estimated Accuracy</td></tr><tr><td>SPC CA 1 </td><td> 621,980. </td><td> 1,797,070. </td><td> MT</td><td> (+/- 180 meters Scaled)</td></tr> </table> <p> <h2>Superseded Survey Control</h2> <p> NGVD 29 (12/02/92) 8.408 (m) 27.59 (f) ADJUSTED 1 2 <br> <p>Superseded values are not recommended for survey control. NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums. See file dsdata.txt to determine how the superseded data were derived. <p> <h2>Marker Information</h2>U.S. NATIONAL GRID SPATIAL ADDRESS: 10TCK819738(NAD 83) <br>MARKER: DV = VERTICAL CONTROL DISK <br>SETTING: 66 = SET IN ROCK OUTCROP <br>SP_SET: BEDROCK <br>STAMPING: A 1466 1992 <br>MARK LOGO: NGS <br>MAGNETIC: N = NO MAGNETIC MATERIAL <br>STABILITY: A = MOST RELIABLE AND EXPECTED TO HOLD <br>STABILITY: POSITION/ELEVATION WELL <br>SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR <br>SATELLITE: SATELLITE OBSERVATIONS - 1992 <br> </table> <p> <h2>History</h2><table border=1><tr><td>Date </td><td>Condition </td><td>Report By</td></tr><tr><td>1992 </td><td>MONUMENTED </td><td>NGS</td></tr> </table> <p> <h2>STATION DESCRIPTION </h2> <p>DESCRIBED BY NATIONAL GEODETIC SURVEY 1992 17.4 KM (10.80 MI) SOUTHEASTERLY ALONG MATTOLE ROAD FROM THE INTERSECTION OF CHAMBERS ROAD IN PETROLIA, SET VERTICALLY IN THE NORTHEAST FACE OF A 15 BY 65-FOOT AREA OF OUTCROPPING BEDROCK, 16.0 M (52.5 FT) SOUTHWEST OF AND LEVEL WITH THE ROAD CENTERLINE, 8.0 M (26.2 FT) SOUTHEAST OF THE NORTHWEST END OF THE OUTCROP, 1.2 M (3.9 FT) ABOVE THE GROUND SURFACE, AND 0.4 M (1.3 FT) NORTHWEST OF A WITNESS POST. LV1229 A 1467 http://www.geocaching.com/mark/details.asp?PID=LV1229 A 1467 Geocache Geocache A 1467 NGS NGS Unknown Cache Regular 1 1 United States California NGS Datasheet <h1>A 1467</h1> <b> PID </b> LV1229 <br> <b> STATE/COUNTY</b> CA/HUMBOLDT <br> <b> USGS QUAD </b> BULL CREEK (1969) <br> <p> <h2>Current Survey Control</h2> <hr> <b> NAD 83(1986)</b> 40 21 05. (N) 124 00 19. (W) SCALED <br> <b> NAVD 88 </b> 89.531 (meters) 293.74 (feet) ADJUSTED <br> <hr> <b> GEOID HEIGHT</b> -30.43 (meters) GEOID03 <br> <b> DYNAMIC HT </b> 89.485 (meters) 293.59 (feet) COMP <br> <b> MODELED GRAV</b> 980,121.1 (mgal) NAVD 88 <br> <p> <b> VERT ORDER </b> FIRST CLASS II <br> <p>The horizontal coordinates were scaled from a topographic map and have an estimated accuracy of +/- 6 seconds. <p>The orthometric height was determined by differential leveling and adjusted by the National Geodetic Survey in December 1992. <p>The geoid height was determined by GEOID03. <p>The dynamic height is computed by dividing the NAVD 88 geopotential number by the normal gravity value computed on the Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45 degrees latitude (g = 980.6199 gals.). <p>The modeled gravity was interpolated from observed gravity values. <p> <table border=1><tr><td> </td><td> North </td><td> East </td><td> Units</td><td> Estimated Accuracy</td></tr><tr><td>SPC CA 1 </td><td> 614,990. </td><td> 1,829,670. </td><td> MT</td><td> (+/- 180 meters Scaled)</td></tr> </table> <p> <h2>Superseded Survey Control</h2> <p> NGVD 29 (12/02/92) 88.578 (m) 290.61 (f) ADJUSTED 1 2 <br> <p>Superseded values are not recommended for survey control. NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums. See file dsdata.txt to determine how the superseded data were derived. <p> <h2>Marker Information</h2>U.S. NATIONAL GRID SPATIAL ADDRESS: 10TDK146672(NAD 83) <br>MARKER: DV = VERTICAL CONTROL DISK <br>SETTING: 38 = SET IN THE ABUTMENT OR PIER OF A LARGE BRIDGE <br>SP_SET: ABUTMENT <br>STAMPING: A 1467 1992 <br>MARK LOGO: NGS <br>MAGNETIC: N = NO MAGNETIC MATERIAL <br>STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL <br>SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR <br>SATELLITE: SATELLITE OBSERVATIONS - 1992 <br> </table> <p> <h2>History</h2><table border=1><tr><td>Date </td><td>Condition </td><td>Report By</td></tr><tr><td>1992 </td><td>MONUMENTED </td><td>NGS</td></tr> </table> <p> <h2>STATION DESCRIPTION </h2> <p>DESCRIBED BY NATIONAL GEODETIC SURVEY 1992 0.1 KM (0.05 MI) NORTHEASTERLY ALONG SPROWEL CREEK ROAD FROM THE POST OFFICE IN GARBERVILLE, THENCE 0.5 KM (0.30 MI) NORTHERLY ALONG REDWOOD DRIVE, THENCE 39.6 KM (24.60 MI) NORTHERLY ALONG U.S. HIGHWAY 101, THENCE 8.4 KM (5.20 MI) SOUTHWESTERLY ALONG MATTOLE ROAD, IN TOP OF AND 0.5 M (1.6 FT) NORTH OF THE SOUTH END OF THE EAST CONCRETE ABUTMENT OF A BRIDGE SPANNING BULL CREEK, AND 4.6 M (15.1 FT) SOUTH OF AND LEVEL WITH THE ROAD CENTER. LV1276 A 1468 http://www.geocaching.com/mark/details.asp?PID=LV1276 A 1468 Geocache Geocache A 1468 NGS NGS Unknown Cache Regular 1 1 United States California NGS Datasheet <h1>A 1468</h1> <b> PID </b> LV1276 <br> <b> STATE/COUNTY</b> CA/HUMBOLDT <br> <b> USGS QUAD </b> TAYLOR PEAK (1969) <br> <p> <h2>Current Survey Control</h2> <hr> <b> NAD 83(1986)</b> 40 28 03. (N) 124 12 44. (W) SCALED <br> <b> NAVD 88 </b> 795.970 (meters) 2611.44 (feet) ADJUSTED <br> <hr> <b> GEOID HEIGHT</b> -30.79 (meters) GEOID03 <br> <b> DYNAMIC HT </b> 795.512 (meters) 2609.94 (feet) COMP <br> <b> MODELED GRAV</b> 980,021.7 (mgal) NAVD 88 <br> <p> <b> VERT ORDER </b> FIRST CLASS II <br> <p>The horizontal coordinates were scaled from a topographic map and have an estimated accuracy of +/- 6 seconds. <p>The orthometric height was determined by differential leveling and adjusted by the National Geodetic Survey in December 1992. <p>The geoid height was determined by GEOID03. <p>The dynamic height is computed by dividing the NAVD 88 geopotential number by the normal gravity value computed on the Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45 degrees latitude (g = 980.6199 gals.). <p>The modeled gravity was interpolated from observed gravity values. <p> <table border=1><tr><td> </td><td> North </td><td> East </td><td> Units</td><td> Estimated Accuracy</td></tr><tr><td>SPC CA 1 </td><td> 628,300. </td><td> 1,812,420. </td><td> MT</td><td> (+/- 180 meters Scaled)</td></tr> </table> <p> <h2>Superseded Survey Control</h2> <p> NGVD 29 (12/02/92) 794.968 (m) 2608.16 (f) ADJUSTED 1 2 <br> <p>Superseded values are not recommended for survey control. NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums. See file dsdata.txt to determine how the superseded data were derived. <p> <h2>Marker Information</h2>U.S. NATIONAL GRID SPATIAL ADDRESS: 10TCK972803(NAD 83) <br>MARKER: I = METAL ROD <br>SETTING: 49 = STAINLESS STEEL ROD W/O SLEEVE (10 FT.+) <br>SP_SET: STAINLESS STEEL ROD <br>STAMPING: A 1468 1992 <br>MARK LOGO: NGS <br>PROJECTION: FLUSH <br>MAGNETIC: I = MARKER IS A STEEL ROD <br>STABILITY: B = PROBABLY HOLD POSITION/ELEVATION WELL <br>SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR <br>SATELLITE: SATELLITE OBSERVATIONS - 1992 <br>ROD/PIPE-DEPTH: 6.0 meters <br> </table> <p> <h2>History</h2><table border=1><tr><td>Date </td><td>Condition </td><td>Report By</td></tr><tr><td>1992 </td><td>MONUMENTED </td><td>NGS</td></tr> </table> <p> <h2>STATION DESCRIPTION </h2> <p>DESCRIBED BY NATIONAL GEODETIC SURVEY 1992 0.2 KM (0.10 MI) SOUTHEASTERLY ALONG WILDWOOD AVENUE FROM THE POST OFFICE IN RIO DELL, THENCE 7.9 KM (4.90 MI) SOUTHWESTERLY ALONG MONUMENT ROAD, THENCE 7.2 KM (4.45 MI) WESTERLY ALONG BEAR RIVER RIDGE ROAD, 21.6 M (70.9 FT) SOUTHWEST OF THE CENTER OF A 10 BY 10-FOOT AREA OF OUTCROPPING BEDROCK, 8.6 M (28.2 FT) NORTHEAST OF THE ROAD CENTER, 0.3 M (1.0 FT) SOUTHWEST OF A WITNESS POST, AND 0.3 M (1.0 FT) ABOVE THE LEVEL OF THE ROAD. NOTE--ACCESS TO THE DATUM POINT IS THROUGH A 5-INCH LOGO CAP. MX0678 A 228 http://www.geocaching.com/mark/details.asp?PID=MX0678 A 228 Geocache Geocache A 228 CGS Unknown Cache Regular 1 1 United States California NGS Datasheet <h1>A 228</h1> <b> PID </b> MX0678 <br> <b> STATE/COUNTY</b> CA/HUMBOLDT <br> <b> USGS QUAD </b> BALD HILLS (1982) <br> <p> <h2>Current Survey Control</h2> <hr> <b> NAD 83(1986)</b> 41 08 45. (N) 123 53 14. (W) SCALED <br> <b> NAVD 88 </b> 822.233 (meters) 2697.61 (feet) ADJUSTED <br> <hr> <b> GEOID HEIGHT</b> -28.52 (meters) GEOID03 <br> <b> DYNAMIC HT </b> 821.774 (meters) 2696.10 (feet) COMP <br> <b> MODELED GRAV</b> 980,037.5 (mgal) NAVD 88 <br> <p> <b> VERT ORDER </b> SECOND CLASS 0 <br> <p>The horizontal coordinates were scaled from a topographic map and have an estimated accuracy of +/- 6 seconds. <p>The orthometric height was determined by differential leveling and adjusted by the National Geodetic Survey in June 1991. <p>The geoid height was determined by GEOID03. <p>The dynamic height is computed by dividing the NAVD 88 geopotential number by the normal gravity value computed on the Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45 degrees latitude (g = 980.6199 gals.). <p>The modeled gravity was interpolated from observed gravity values. <p> <table border=1><tr><td> </td><td> North </td><td> East </td><td> Units</td><td> Estimated Accuracy</td></tr><tr><td>SPC CA 1 </td><td> 702,960. </td><td> 1,841,600. </td><td> MT</td><td> (+/- 180 meters Scaled)</td></tr> </table> <p> <h2>Superseded Survey Control</h2> <p> NGVD 29 (??/??/??) 821.194 (m) 2694.20 (f) ADJUSTED 2 0 <br> <p>Superseded values are not recommended for survey control. NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums. See file dsdata.txt to determine how the superseded data were derived. <p> <h2>Marker Information</h2>U.S. NATIONAL GRID SPATIAL ADDRESS: 10TDL255553(NAD 83) <br>MARKER: DB = BENCH MARK DISK <br>SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT <br>SP_SET: SET IN TOP OF CONCRETE MONUMENT <br>STAMPING: A 228 1935 <br>STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO <br>STABILITY: SURFACE MOTION <br> </table> <p> <h2>History</h2><table border=1><tr><td>Date </td><td>Condition </td><td>Report By</td></tr><tr><td>1935 </td><td>MONUMENTED </td><td>CGS</td></tr><tr><td>1942 </td><td>GOOD </td><td>NGS</td></tr> </table> <p> <h2>STATION DESCRIPTION </h2> <p>DESCRIBED BY NATIONAL GEODETIC SURVEY 1942 17.3 MI SE FROM ORICK. 17.3 MILES SOUTHEAST ALONG THE WEITCHPEC ROAD FROM THE JUNCTION OF U.S. HIGHWY 101 ABOUT ONE MILE NORTH OF ORICK, HUMBOLDT COUNTY, 18 FEET NORTHEAST OF THE CENTERLINE OF THE ROAD, 2 FEET SOUTHWEST OF A WOVENWIRE FENCE, NEAR A WITNESS POST, AND ABOUT 5 FEET HIGHER THAN THE ROAD. A STANDARD DISK, STAMPED A 228 1935 AND SET IN THE TOP OF A CONCRETE POST. LV0216 A 229 http://www.geocaching.com/mark/details.asp?PID=LV0216 A 229 Geocache Geocache A 229 CGS Unknown Cache Regular 1 1 United States California NGS Datasheet <h1>A 229</h1> <b> PID </b> LV0216 <br> <b> STATE/COUNTY</b> CA/HUMBOLDT <br> <b> USGS QUAD </b> FORTUNA (1972) <br> <p> <h2>Current Survey Control</h2> <hr> <b> NAD 83(1986)</b> 40 36 01. (N) 124 13 15. (W) SCALED <br> <b> NAVD 88 </b> 9.69 (+/-2cm) 31.8 (feet) VERTCON <br> <hr> <b> GEOID HEIGHT</b> -31.06 (meters) GEOID03 <br> <p> <b> VERT ORDER </b> SECOND CLASS 0 (See Below) <br> <p>The horizontal coordinates were scaled from a topographic map and have an estimated accuracy of +/- 6 seconds. <p>The NAVD 88 height was computed by applying the VERTCON shift value to the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.) The vertical order pertains to the NGVD 29 superseded value. <p>The geoid height was determined by GEOID03. <p> <table border=1><tr><td> </td><td> North </td><td> East </td><td> Units</td><td> Estimated Accuracy</td></tr><tr><td>SPC CA 1 </td><td> 643,060. </td><td> 1,812,060. </td><td> MT</td><td> (+/- 180 meters Scaled)</td></tr> </table> <p> <h2>Superseded Survey Control</h2> <p> NGVD 29 (??/??/??) 8.706 (m) 28.56 (f) ADJUSTED 2 0 <br> <p>Superseded values are not recommended for survey control. NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums. See file dsdata.txt to determine how the superseded data were derived. <p> <h2>Marker Information</h2>U.S. NATIONAL GRID SPATIAL ADDRESS: 10TCK967951(NAD 83) <br>MARKER: DB = BENCH MARK DISK <br>SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT <br>SP_SET: SET IN TOP OF CONCRETE MONUMENT <br>STAMPING: A 229 1935 <br>STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO <br>STABILITY: SURFACE MOTION <br> </table> <p> <h2>History</h2><table border=1><tr><td>Date </td><td>Condition </td><td>Report By</td></tr><tr><td>1935 </td><td>MONUMENTED </td><td>CGS</td></tr><tr><td>19921022</td><td>MARK NOT FOUND </td><td>NGS</td></tr> </table> <p> <h2>STATION DESCRIPTION </h2> <p>DESCRIBED BY COAST AND GEODETIC SURVEY 1935 1.7 MI SW FROM FERNBRIDGE. 1.7 MILES SOUTHWEST ALONG THE FERNDALE ROAD FROM FERNBRIDGE, HUMBOLDT COUNTY, 0.4 MILE EAST OF GREAT UNION SCHOOL, AT THE WEST END OF A CONCRETE BRIDGE, 24 FEET NORTH OF THE CENTERLINE OF THE ROAD, 15 FEET WEST OF THE CENTERLINE OF A SECTION-LINE ROAD LEADING NORTH, AND 7 FEET WEST OF A POWER POLE. A STANDARD DISK, STAMPED A 229 1935 AND SET IN THE TOP OF A CONCRETE POST. <p> <h2>STATION RECOVERY (1992) </h2> <p>RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1992 A THOROUGH SEARCH REVEALED NO EVIDENCE OF THE MARK. LV0380 A 230 http://www.geocaching.com/mark/details.asp?PID=LV0380 A 230 Geocache Geocache A 230 CGS Unknown Cache Regular 1 1 United States California NGS Datasheet <h1>A 230</h1> <b> PID </b> LV0380 <br> <b> STATE/COUNTY</b> CA/HUMBOLDT <br> <b> USGS QUAD </b> SHUBRICK PEAK (1997) <br> <p> <h2>Current Survey Control</h2> <hr> <b> NAD 83(1986)</b> 40 14 15. (N) 124 07 58. (W) SCALED <br> <b> NAVD 88 </b> 114.57 (+/-2cm) 375.9 (feet) VERTCON <br> <hr> <b> GEOID HEIGHT</b> -30.66 (meters) GEOID03 <br> <p> <b> VERT ORDER </b> SECOND CLASS 0 (See Below) <br> <p>The horizontal coordinates were scaled from a topographic map and have an estimated accuracy of +/- 6 seconds. <p>The NAVD 88 height was computed by applying the VERTCON shift value to the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.) The vertical order pertains to the NGVD 29 superseded value. <p>The geoid height was determined by GEOID03. <p> <table border=1><tr><td> </td><td> North </td><td> East </td><td> Units</td><td> Estimated Accuracy</td></tr><tr><td>SPC CA 1 </td><td> 602,610. </td><td> 1,818,530. </td><td> MT</td><td> (+/- 180 meters Scaled)</td></tr> </table> <p> <h2>Superseded Survey Control</h2> <p> NGVD 29 (??/??/??) 113.622 (m) 372.77 (f) ADJUSTED 2 0 <br> <p>Superseded values are not recommended for survey control. NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums. See file dsdata.txt to determine how the superseded data were derived. <p> <h2>Marker Information</h2>U.S. NATIONAL GRID SPATIAL ADDRESS: 10TDK036547(NAD 83) <br>MARKER: DB = BENCH MARK DISK <br>SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT <br>SP_SET: SET IN TOP OF CONCRETE MONUMENT <br>STAMPING: A 230 1935 <br>STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO <br>STABILITY: SURFACE MOTION <br> </table> <p> <h2>History</h2><table border=1><tr><td>Date </td><td>Condition </td><td>Report By</td></tr><tr><td>1935 </td><td>MONUMENTED </td><td>CGS</td></tr><tr><td>1969 </td><td>MARK NOT FOUND </td><td>USGS</td></tr> </table> <p> <h2>STATION DESCRIPTION </h2> <p>DESCRIBED BY COAST AND GEODETIC SURVEY 1935 0.7 MI N FROM HONEYDEW. 0.7 MILE NORTH ALONG THE PETROLIA-ETTERSBURG ROAD FROM HONEYDEW, HUMBOLDT COUNTY, IN A SMALL ISLAND BETWEEN THE OLD AND NEW ROAD, 23 FEET SOUTHEAST OF THE CENTERLINE OF THE ROAD, AND 20 FEET NORTHWEST OF A 36-INCH FIR TREE. A STANDARD DISK, STAMPED A 230 1935 AND SET IN THE TOP OF A CONCRETE POST. <p> <h2>STATION RECOVERY (1969) </h2> <p>RECOVERY NOTE BY US GEOLOGICAL SURVEY 1969 MARK NOT FOUND. LU1320 A 242 RESET 1942 http://www.geocaching.com/mark/details.asp?PID=LU1320 A 242 RESET 1942 Geocache Geocache A 242 RESET 1942 CGS Unknown Cache Regular 1 1 United States California NGS Datasheet <h1>A 242 RESET 1942</h1> <b> PID </b> LU1320 <br> <b> STATE/COUNTY</b> CA/HUMBOLDT <br> <b> USGS QUAD </b> ALDERPOINT (1969) <br> <p> <h2>Current Survey Control</h2> <hr> <b> NAD 83(1986)</b> 40 14 26. (N) 123 37 28. (W) SCALED <br> <b> NAVD 88 </b> 259.67 (+/-2cm) 851.9 (feet) VERTCON <br> <hr> <b> GEOID HEIGHT</b> -29.68 (meters) GEOID03 <br> <p> <b> VERT ORDER </b> SECOND CLASS 0 (See Below) <br> <p>The horizontal coordinates were scaled from a topographic map and have an estimated accuracy of +/- 6 seconds. <p>The NAVD 88 height was computed by applying the VERTCON shift value to the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.) The vertical order pertains to the NGVD 29 superseded value. <p>The geoid height was determined by GEOID03. <p> <table border=1><tr><td> </td><td> North </td><td> East </td><td> Units</td><td> Estimated Accuracy</td></tr><tr><td>SPC CA 1 </td><td> 602,020. </td><td> 1,861,790. </td><td> MT</td><td> (+/- 180 meters Scaled)</td></tr> </table> <p> <h2>Superseded Survey Control</h2> <p> NGVD 29 (??/??/92) 258.739 (m) 848.88 (f) ADJ UNCH 2 0 <br> <p>Superseded values are not recommended for survey control. NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums. See file dsdata.txt to determine how the superseded data were derived. <p> <h2>Marker Information</h2>U.S. NATIONAL GRID SPATIAL ADDRESS: 10TDK468546(NAD 83) <br>MARKER: DB = BENCH MARK DISK <br>SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT <br>SP_SET: SET IN TOP OF CONCRETE MONUMENT <br>STAMPING: A 242 RESET 1942 <br>STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO <br>STABILITY: SURFACE MOTION <br> </table> <p> <h2>History</h2><table border=1><tr><td>Date </td><td>Condition </td><td>Report By</td></tr><tr><td>1942 </td><td>MONUMENTED </td><td>CGS</td></tr> </table> <p> <h2>STATION DESCRIPTION </h2> <p>DESCRIBED BY COAST AND GEODETIC SURVEY 1942 3.1 MI NE FROM FORT SEWARD. 3.1 MILES NORTHEAST ALONG A ROAD FROM THE POST OFFICE AT FORT SEWARD, HUMBOLDT COUNTY, 40 FEET NORTH OF THE JUNCTION OF A ROAD LEADING TO ALDERPOINT, 15 FEET SOUTHEAST OF A 24-INCH OAK TREE, AND NEAR A WHITE WOODEN WITNESS POST. A STANDARD DISK, STAMPED A 242 RESET 1942 AND SET IN THE TOP OF A CONCRETE POST. NOTE-- THIS BENCH MARK WAS ESTABLISHED BY THE RELEVELING PARTY FROM THIS BUREAU IN MAY 1942. LU1352 A 633 http://www.geocaching.com/mark/details.asp?PID=LU1352 A 633 Geocache Geocache A 633 CGS CGS Unknown Cache Regular 1 1 United States California NGS Datasheet <h1>A 633</h1> <b> PID </b> LU1352 <br> <b> STATE/COUNTY</b> CA/HUMBOLDT <br> <b> USGS QUAD </b> GARBERVILLE (1970) <br> <p> <h2>Current Survey Control</h2> <hr> <b> NAD 83(1986)</b> 40 06 25. (N) 123 47 10. (W) SCALED <br> <b> NAVD 88 </b> 231.030 (meters) 757.97 (feet) ADJUSTED <br> <hr> <b> GEOID HEIGHT</b> -30.30 (meters) GEOID03 <br> <b> DYNAMIC HT </b> 230.901 (meters) 757.55 (feet) COMP <br> <b> MODELED GRAV</b> 980,064.3 (mgal) NAVD 88 <br> <p> <b> VERT ORDER </b> FIRST CLASS II <br> <p>The horizontal coordinates were scaled from a topographic map and have an estimated accuracy of +/- 6 seconds. <p>The orthometric height was determined by differential leveling and adjusted by the National Geodetic Survey in June 1991. <p>The geoid height was determined by GEOID03. <p>The dynamic height is computed by dividing the NAVD 88 geopotential number by the normal gravity value computed on the Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45 degrees latitude (g = 980.6199 gals.). <p>The modeled gravity was interpolated from observed gravity values. <p> <table border=1><tr><td> </td><td> North </td><td> East </td><td> Units</td><td> Estimated Accuracy</td></tr><tr><td>SPC CA 1 </td><td> 587,450. </td><td> 1,847,730. </td><td> MT</td><td> (+/- 180 meters Scaled)</td></tr> </table> <p> <h2>Superseded Survey Control</h2> <p> NGVD 29 (12/02/92) 230.103 (m) 754.93 (f) ADJUSTED 1 2 <br> <p>Superseded values are not recommended for survey control. NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums. See file dsdata.txt to determine how the superseded data were derived. <p> <h2>Marker Information</h2>U.S. NATIONAL GRID SPATIAL ADDRESS: 10TDK330399(NAD 83) <br>MARKER: DB = BENCH MARK DISK <br>SETTING: 80 = SET IN A BOULDER <br>SP_SET: IN DRILL HOLE IN A BOULDER <br>STAMPING: A 633 1942 <br>MARK LOGO: CGS <br>MAGNETIC: N = NO MAGNETIC MATERIAL <br>STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO <br>STABILITY: SURFACE MOTION <br>SATELLITE: THE SITE LOCATION WAS REPORTED AS SUITABLE FOR <br>SATELLITE: SATELLITE OBSERVATIONS - July 29, 1992 <br> </table> <p> <h2>History</h2><table border=1><tr><td>Date </td><td>Condition </td><td>Report By</td></tr><tr><td>1942 </td><td>MONUMENTED </td><td>CGS</td></tr><tr><td>19880330</td><td>GOOD </td><td>NGS</td></tr><tr><td>19920729</td><td>GOOD </td><td>NGS</td></tr><tr><td>19960101</td><td>GOOD </td><td>WOOLPT</td></tr> </table> <p> <h2>STATION DESCRIPTION </h2> <p>DESCRIBED BY COAST AND GEODETIC SURVEY 1942 1.5 MI E FROM GARBERVILLE. 1.5 MILES EAST ALONG THE HARRIS ROAD FROM THE POST OFFICE AT GARBERVILLE, HUMBOLDT COUNTY, ABOUT 600 FEET EAST OF A WATER PUMP, ON A KNOLL, 75 FEET SOUTH OF THE CENTERLINE OF THE ROAD, AND IN THE TOP OF A BOULDER. A STANDARD DISK, STAMPED A 633 1942. <p> <h2>STATION RECOVERY (1988) </h2> <p>RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1988 RECOVERED IN GOOD CONDITION. A NEW TO REACH FOLLOWS. 1.0 KM (0.60 MI) NORTHERLY ALONG REDWOOD DRIVE FROM THE POST OFFICE IN GARBERVILLE, THENCE 1.1 KM (0.70 MI) EASTERLY ALONG ALDERPOINT ROAD. ADD--7.0 M (23.0 FT) NORTH OF THE CENTER OF WALLAN ROAD, AND 22.9 M (75.1 FT) EAST OF THE CENTERLINE OF THE ALDERPOINT ROAD. DELETE--75 FEET SOUTH OF THE CENTERLINE OF THE ROAD. <p> <h2>STATION RECOVERY (1992) </h2> <p>RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1992 0.1 KM (0.05 MI) NORTHEASTERLY ALONG SPROWEL CREEK ROAD FROM THE POST OFFICE IN GARBERVILLE, THENCE 1.0 KM (0.60 MI) NORTHERLY ALONG REDWOOD DRIVE, THENCE 1.1 KM (0.70 MI) EASTERLY ALONG ALDERPOINT ROAD, IN A BOULDER AT THE CREST OF A HILL, 22.9 M (75.1 FT) EAST OF THE CENTERLINE OF THE ROAD, AND 7.0 M (23.0 FT) NORTH OF THE CENTER OF WALLAN ROAD. <p> <h2>STATION RECOVERY (1996) </h2> <p>RECOVERY NOTE BY WOOLPERT CONSULTANTS 1996 RECOVERED AS GOOD. LU1279 A 634 http://www.geocaching.com/mark/details.asp?PID=LU1279 A 634 Geocache Geocache A 634 CGS CGS Unknown Cache Regular 1 1 United States California NGS Datasheet <h1>A 634</h1> <b> PID </b> LU1279 <br> <b> STATE/COUNTY</b> CA/HUMBOLDT <br> <b> USGS QUAD </b> MIRANDA (1970) <br> <p> <h2>Current Survey Control</h2> <hr> <b> NAD 83(1986)</b> 40 13 24. (N) 123 48 03. (W) SCALED <br> <b> NAVD 88 </b> 70.027 (meters) 229.75 (feet) ADJUSTED <br> <hr> <b> GEOID HEIGHT</b> -30.27 (meters) GEOID03 <br> <b> DYNAMIC HT </b> 69.988 (meters) 229.62 (feet) COMP <br> <b> MODELED GRAV</b> 980,070.7 (mgal) NAVD 88 <br> <p> <b> VERT ORDER </b> FIRST CLASS II <br> <p>The horizontal coordinates were scaled from a topographic map and have an estimated accuracy of +/- 6 seconds. <p>The orthometric height was determined by differential leveling and adjusted by the National Geodetic Survey in December 1992. <p>The geoid height was determined by GEOID03. <p>The dynamic height is computed by dividing the NAVD 88 geopotential number by the normal gravity value computed on the Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45 degrees latitude (g = 980.6199 gals.). <p>The modeled gravity was interpolated from observed gravity values. <p> <table border=1><tr><td> </td><td> North </td><td> East </td><td> Units</td><td> Estimated Accuracy</td></tr><tr><td>SPC CA 1 </td><td> 600,400. </td><td> 1,846,740. </td><td> MT</td><td> (+/- 180 meters Scaled)</td></tr> </table> <p> <h2>Superseded Survey Control</h2> <p> NAVD 88 (06/15/91) 70.029 (m) 229.75 (f) UNKNOWN 1 2 <br> NGVD 29 (12/02/92) 69.102 (m) 226.71 (f) ADJUSTED 1 2 <br> <p>Superseded values are not recommended for survey control. NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums. See file dsdata.txt to determine how the superseded data were derived. <p> <h2>Marker Information</h2>U.S. NATIONAL GRID SPATIAL ADDRESS: 10TDK318528(NAD 83) <br>MARKER: DB = BENCH MARK DISK <br>SETTING: 32 = SET IN A RETAINING WALL OR CONCRETE LEDGE <br>SP_SET: HEADWALL <br>STAMPING: A 634 1942 <br>MARK LOGO: CGS <br>MAGNETIC: N = NO MAGNETIC MATERIAL <br>STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO <br>STABILITY: SURFACE MOTION <br>SATELLITE: THE SITE LOCATION WAS REPORTED AS NOT SUITABLE FOR <br>SATELLITE: SATELLITE OBSERVATIONS - July 29, 1992 <br> </table> <p> <h2>History</h2><table border=1><tr><td>Date </td><td>Condition </td><td>Report By</td></tr><tr><td>1942 </td><td>MONUMENTED </td><td>CGS</td></tr><tr><td>1967 </td><td>GOOD </td><td>NGS</td></tr><tr><td>19880328</td><td>GOOD </td><td>NGS</td></tr><tr><td>19920729</td><td>GOOD </td><td>NGS</td></tr> </table> <p> <h2>STATION DESCRIPTION </h2> <p>DESCRIBED BY NATIONAL GEODETIC SURVEY 1967 2.3 MI S FROM MIRANDA. 2.3 MILES SOUTH ALONG AVENUE OF THE GIANTS FROM SOUTH FORK UNION HIGH SCHOOL AT MIRANDA, 0.15 MILE SOUTHEAST OF FOREST OF ARDEN LODGE, IN A GROVE OF REDWOOD TREES, IN THE TOP AND 0.5 FOOT NORTHWEST OF THE SOUTHEAST END OF THE NORTHEAST CONCRETE HEAD WALL OF 8- BY 10-FOOT CONCRETE BOX CULVERT 4.18 OVER FISH CREEK, 41 FEET NORTHEAST OF THE CENTER LINE OF THE AVENUE, 24 FEET NORTHWEST OF THE NORTHWEST EDGE OF A GIANT REDWOOD TREE, AND ABOUT 6 FEET LOWER THAN THE AVENUE. <p> <h2>STATION RECOVERY (1988) </h2> <p>RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1988 RECOVERED IN GOOD CONDITION. A NEW TO REACH FOLLOWS. 10.5 KM (6.50 MI) NORTHERLY ALONG U.S. HIGHWAY 101 FROM THE POST OFFICE IN GARBERVILLE, THENCE 6.7 KM (4.15 MI) NORTHERLY ALONG THE AVENUE OF THE GIANTS. <p> <h2>STATION RECOVERY (1992) </h2> <p>RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1992 0.1 KM (0.05 MI) NORTHEASTERLY ALONG SPROWEL CREEK ROAD FROM THE POST OFFICE IN GARBERVILLE, THENCE 0.5 KM (0.30 MI) NORTHERLY ALONG REDWOOD DRIVE, THENCE 10.3 KM (6.40 MI) NORTHERLY ALONG U.S. HIGHWAY 101, THENCE 6.9 KM (4.30 MI) NORTHERLY ALONG THE AVENUE OF THE GIANTS, IN TOP OF AND 0.1 M (0.3 FT) NORTHWEST OF THE SOUTHEAST END OF THE NORTHEAST CONCRETE HEADWALL OF A BOX CULVERT SPANNING FISH CREEK, 0.25 KM (0.15 MI) SOUTHEAST OF THE FOREST OF ARDEN LODGE, AT MILEPOST 4.18, 12.5 M (41.0 FT) NORTHEAST OF THE CENTERLINE OF THE AVENUE, 7.3 M (24.0 FT) NORTHWEST OF THE NORTHWEST EDGE OF A GIANT REDWOOD TREE, AND 1.5 M (4.9 FT) BELOW THE LEVEL OF THE AVENUE. KT1523 A 635 http://www.geocaching.com/mark/details.asp?PID=KT1523 A 635 Geocache Geocache A 635 CGS Unknown Cache Regular 1 1 United States California NGS Datasheet <h1>A 635</h1> <b> PID </b> KT1523 <br> <b> STATE/COUNTY</b> CA/HUMBOLDT <br> <b> USGS QUAD </b> BELL SPRINGS (1994) <br> <p> <h2>Current Survey Control</h2> <hr> <b> NAD 83(1986)</b> 39 59 48. (N) 123 36 56. (W) SCALED <br> <b> NAVD 88 </b> 743.73 (+/-2cm) 2440.1 (feet) VERTCON <br> <hr> <b> GEOID HEIGHT</b> -29.72 (meters) GEOID03 <br> <p> <b> VERT ORDER </b> SECOND CLASS 0 (See Below) <br> <p>The horizontal coordinates were scaled from a topographic map and have an estimated accuracy of +/- 6 seconds. <p>The NAVD 88 height was computed by applying the VERTCON shift value to the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.) The vertical order pertains to the NGVD 29 superseded value. <p>The geoid height was determined by GEOID03. <p> <table border=1><tr><td> </td><td> North </td><td> East </td><td> Units</td><td> Estimated Accuracy</td></tr><tr><td>SPC CA 1 </td><td> 574,930. </td><td> 1,862,040. </td><td> MT</td><td> (+/- 180 meters Scaled)</td></tr> </table> <p> <h2>Superseded Survey Control</h2> <p> NGVD 29 (??/??/92) 742.788 (m) 2436.96 (f) ADJ UNCH 2 0 <br> <p>Superseded values are not recommended for survey control. NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums. See file dsdata.txt to determine how the superseded data were derived. <p> <h2>Marker Information</h2>U.S. NATIONAL GRID SPATIAL ADDRESS: 10SDK474275(NAD 83) <br>MARKER: DB = BENCH MARK DISK <br>SETTING: 80 = SET IN A BOULDER <br>STAMPING: A 635 1942 <br>STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO <br>STABILITY: SURFACE MOTION <br> </table> <p> <h2>History</h2><table border=1><tr><td>Date </td><td>Condition </td><td>Report By</td></tr><tr><td>1942 </td><td>MONUMENTED </td><td>CGS</td></tr> </table> <p> <h2>STATION DESCRIPTION </h2> <p>DESCRIBED BY COAST AND GEODETIC SURVEY 1942 5 MI N FROM BELL SPRINGS. IN HUMBOLDT COUNTY, 5.0 MILES NORTH ALONG THE HARRIS ROAD FROM THE POST OFFICE AT BELL SPRINGS, MENDOCINO COUNTY, OPPOSITE THE SOUTH TOE OF A CUT EAST OF THE ROAD, 16 FEET WEST OF THE CENTERLINE OF THE ROAD, 3 FEET EAST OF A FENCE, IN THE TOP OF A LARGE BOULDER, AND NEAR A WHITE WOODEN WITNESS POST. A STANDARD DISK, STAMPED A 635 1942. LU1223 A 638 http://www.geocaching.com/mark/details.asp?PID=LU1223 A 638 Geocache Geocache A 638 CGS Unknown Cache Regular 1 1 United States California NGS Datasheet <h1>A 638</h1> <b> PID </b> LU1223 <br> <b> STATE/COUNTY</b> CA/HUMBOLDT <br> <b> USGS QUAD </b> MYERS FLAT (1969) <br> <p> <h2>Current Survey Control</h2> <hr> <b> NAD 83(1986)</b> 40 19 19. (N) 123 50 02. (W) SCALED <br> <b> NAVD 88 </b> 58.84 (+/-2cm) 193.0 (feet) VERTCON <br> <hr> <b> GEOID HEIGHT</b> -30.18 (meters) GEOID03 <br> <p> <b> VERT ORDER </b> SECOND CLASS 0 (See Below) <br> <p>The horizontal coordinates were scaled from a topographic map and have an estimated accuracy of +/- 6 seconds. <p>The NAVD 88 height was computed by applying the VERTCON shift value to the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.) The vertical order pertains to the NGVD 29 superseded value. <p>The geoid height was determined by GEOID03. <p> <table border=1><tr><td> </td><td> North </td><td> East </td><td> Units</td><td> Estimated Accuracy</td></tr><tr><td>SPC CA 1 </td><td> 611,400. </td><td> 1,844,160. </td><td> MT</td><td> (+/- 180 meters Scaled)</td></tr> </table> <p> <h2>Superseded Survey Control</h2> <p> NGVD 29 (??/??/92) 57.883 (m) 189.90 (f) ADJ UNCH 2 0 <br> <p>Superseded values are not recommended for survey control. NGS no longer adjusts projects to the NAD 27 or NGVD 29 datums. See file dsdata.txt to determine how the superseded data were derived. <p> <h2>Marker Information</h2>U.S. NATIONAL GRID SPATIAL ADDRESS: 10TDK291638(NAD 83) <br>MARKER: DB = BENCH MARK DISK <br>SETTING: 7 = SET IN TOP OF CONCRETE MONUMENT <br>SP_SET: SET IN TOP OF CONCRETE MONUMENT <br>STAMPING: A 638 1942 <br>STABILITY: C = MAY HOLD, BUT OF TYPE COMMONLY SUBJECT TO <br>STABILITY: SURFACE MOTION <br> </table> <p> <h2>History</h2><table border=1><tr><td>Date </td><td>Condition </td><td>Report By</td></tr><tr><td>1942 </td><td>MONUMENTED </td><td>CGS</td></tr><tr><td>1969 </td><td>MARK NOT FOUND </td><td>USGS</td></tr> </table> <p> <h2>STATION DESCRIPTION </h2> <p>DESCRIBED BY COAST AND GEODETIC SURVEY 1942 0.2 MI SE FROM MC CANN. 0.2 MILE SOUTHEAST ALONG THE NORTHWESTERN PACIFIC RAILROAD FROM THE STATION AT MC CANN, HUMBOLDT COUNTY, AT POLE 232/2, 3 FEET SOUTHEAST OF A RED WATER TANK, AND 10 FEET WEST OF THE CENTERLINE OF THE TRACK. A STANDARD DISK, STAMPED A 638 1942 AND SET IN THE TOP OF A CONCRETE POST. <p> <h2>STATION RECOVERY (1969) </h2> <p>RECOVERY NOTE BY US GEOLOGICAL SURVEY 1969 MARK NOT FOUND. MX0690 A 646 http://www.geocaching.com/mark/details.asp?PID=MX0690 A 646 Geocache Geocache A 646 CGS Unknown Cache Regular 1 1 United States California NGS Datasheet <h1>A 646</h1> <b> PID </b> MX0690 <br> <b> STATE/COUNTY</b> CA/HUMBOLDT <br> <b> USGS QUAD </b> HOLTER RIDGE (1983) <br> <p> <h2>Current Survey Control</h2> <hr> <b> NAD 83(1986)</b> 41 15 38. (N) 123 59 14. (W) SCALED <br> <b> NAVD 88 </b> 597.892 (meters) 1961.58 (feet) ADJUSTED <br> <hr> <b> GEOID HEIGHT</b> -28.79 (meters) GEOID03 <br> <b> DYNAMIC HT </b> 597.598 (meters) 1960.62 (feet) COMP <br> <b> MODELED GRAV</b> 980,112.0 (mgal) NAVD 88 <br> <p> <b> VERT ORDER </b> SECOND CLASS 0 <br> <p>The horizontal coordinates were scaled from a topographic map and have an estimated accuracy of +/- 6 seconds. <p>The orthometric height was determined by differential leveling and adjusted by the National Geodetic Survey in June 1991. <p>The geoid height was determined by GEOID03. <p>The dynamic height is computed by dividing the NAVD 88 geopotential number by the normal gravity value computed on the Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45 degrees latitude (g = 980.6199 gals.). <p>The modeled gravity was interpolated from observed gravity values. <p> <table border=1><tr><td> </td><td> North </td><td> East </td><td> Units</td><td> Estimated Accuracy</td></tr><tr><td>SPC CA 1 </td><td> 715,880. </td><td> 1,833,490. </td><td> MT</td><td> (+/- 180 meters Scaled)</td></tr> </table> <p> <h2>Superseded Survey Control</h2> <p> NGVD 29 (??/??/??) 596.868 (m) 1958.22 (f) ADJUSTED 2 0 <br> <p>Superseded values are not recommen