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Details for Benchmark: HS3135

N 37° 16.317 W 121° 57.250 (NAD 83)

Altitude: 227.4

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

Location:
In SANTA CLARA county, CA View Original Datasheet
Designation:
35 USGS
Marker Type:
survey disk
Setting:
light structures
Stability:
Mark of questionable or unknown stability.

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Described as MARK NOT FOUND. 50sumtin

Documented History (by the NGS)

01/01/1908 by USGS (MONUMENTED)
01/01/1954 by NGS (GOOD)
DESCRIBED BY NATIONAL GEODETIC SURVEY 1954 1.1 MI SW FROM CAMPBELL. 1.1 MILES SOUTHWEST ALONG THE SOUTHERN PACIFIC COMPANY RAILROAD FROM THE STATION AT CAMPBELL, ABOUT 3 1/2 POLES NORTHEAST OF MILEPOLE 52, NEAR THE T JUNCTION OF SANTA CLARA-LOS GATOS ROAD AND SUNNY OAKS AVENUE, AT 2- BY 10-FOOT WOODEN CULVERT 51.87, IN THE TOP OF THE NORTHWEST END OF THE SOUTHWEST CONCRETE ABUTMENT, 5.5 FEET NORTHWEST OF THE NORTHWEST RAIL, AND ABOUT 2 FEET LOWER THAN THE TRACK.
01/01/1960 by NGS (MARK NOT FOUND)
RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1960 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  • The NAVD 88 height was computed by applying the VERTCON shift value to the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.) The vertical order pertains to the superseded datum.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.