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Details for Benchmark: HS3263

N 37° 15.617 W 121° 55.100 (NAD 83)

Altitude: 211.8

Coordinates may not be exact. Altitude is VERTCON and location is SCALED. (more info)

Location:
In SANTA CLARA county, CA View Original Datasheet
Designation:
C 180
Marker Type:
bench mark disk
Setting:
set into the top of a round concrete monument
Stability:
May hold, but of type commonly subject to surface motion.

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Documented History (by the NGS)

01/01/1934 by CGS (MONUMENTED)
01/01/1954 by NGS (GOOD)
DESCRIBED BY NATIONAL GEODETIC SURVEY 1954 3 MI SE FROM CAMPBELL. 0.7 MILE SOUTHWEST ALONG THE SOUTHERN PACIFIC COMPANY RAILROAD FROM THE STATION AT CAMPBELL, THENCE 0.4 MILE SOUTH ALONG CASEY ROAD, THENCE 1.6 MILES SOUTHEAST ALONG CAMDEN AVENUE, THENCE 0.3 MILE EAST ALONG THE ABANDONED BED OF NEW ALMADEN BRANCH SOUTHERN PACIFIC COMPANY RAILROAD, ON PROPERTY OF MR. R. PERUSINA, 64 FEET NORTHWEST OF A 42-INCH WHITE OAK TREE, 39.2 FEET NORTHWEST OF THE NORTH CORNER OF THE NORTHWEST ONE OF TWO SMALL CABINS, 29.3 FEET SOUTHWEST OF THE CENTER LINE OF THE RAILROAD BED, 1.3 FEET SOUTHEAST OF A WITNESS POST, AND SET IN THE TOP OF A CONCRETE POST PROJECTING 0.2 FOOT ABOVE THE GROUND. NOTE-- THE TOP OF THE CONCRETE POST HAS BEEN CHIPPED BY FARM MACHINERY BUT IT IS STILL SOLID. NOTE-- THE RAILROAD BED IS NOW A ROAD AND THERE IS NO EVIDENCE OF THE BED. THE FARM BUILDINGS ARE GONE. THIS MARK WAS SEARCHED FOR BUT NOT FOUND.
01/01/1961 by USGS (MARK NOT FOUND)
RECOVERY NOTE BY US GEOLOGICAL SURVEY 1961 MARK NOT FOUND.

Control Text

  • The horizontal coordinates were scaled from a topographic map and have an estimated accuracy of +/- 6 seconds.
  • The NAVD 88 height was computed by applying the VERTCON shift value to the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.) The vertical order pertains to the superseded datum.
  • The geoid height was determined by GEOID99.