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Details for Benchmark: HS3268

N 37° 15.700 W 121° 55.883 (NAD 83)

Altitude: 226

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

Location:
In SANTA CLARA county, CA View Original Datasheet
Designation:
BM
Marker Type:
pipe cap
Setting:
set into the top of a metal pipe driven into the ground
Stability:
Mark of questionable or unknown stability.

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Documented History (by the NGS)

Unknown by CADH (MONUMENTED)
01/01/1948 by NGS (GOOD)
DESCRIBED BY NATIONAL GEODETIC SURVEY 1948 2.2 MI SE FROM CAMPBELL. ALONG THE FORMER NEW ALMADEN BRANCH OF THE SOUTHERN PACIFIC CO. RAILROAD FROM THE CAMPBELL RAILROAD STATION, AT THE FORMER CROSSING OF WARE AVENUE, 28.0 FEET NORTH OF THE CENTER LINE OF OLD TRACK, IN THE CENTER LINE OF WARE AVENUE, A ONE INCH IRON PIPE SET FLUSH WITH THE ROAD.
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  • The NAVD 88 height was computed by applying the VERTCON shift value to the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.) The vertical order pertains to the superseded datum.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.