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Details for Benchmark: HS3231

N 37° 18.950 W 121° 53.200 (NAD 83)

Altitude: 118.1

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

Location:
In SANTA CLARA county, CA View Original Datasheet
Designation:
M 1122 RESET 1968
Marker Type:
bench mark disk
Setting:
light structures
Stability:
Mark of questionable or unknown stability.

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Another rail overcrossing so generally unsafe to find. I poked up over the concrete bridge rail to see if I could see it without hopping over but the sidewalk area there is almost entirely covered with the large rock gravel typical of railroads. So it may still be there under the gravel but this really shouldn't be searched for under normal conditions.

Documented History (by the NGS)

01/01/1968 by CGS (MONUMENTED)
DESCRIBED BY COAST AND GEODETIC SURVEY 1968 AT SAN JOSE. AT SAN JOSE, 1.3 MILES SOUTHEAST ALONG THE SOUTHERN PACIFIC COMPANY RAILROAD FROM THE STATION AT SAN JOSE, IN THE TOP OF THE NORTHWEST END OF THE NORTHEAST CONCRETE SIDEWALK OVER THE NORTHWEST CONCRETE ABUTMENT OF A RAILROAD BRIDGE OVER THE WEST-BOUND LANE OF WILLOW STREET, 29 FEET NORTHWEST OF THE CENTERLINE OF THE WEST-BOUND LANE OF THE STREET, 3.2 FEET NORTHEAST OF THE NORTHEAST RAIL OF THE TRACK, 0.9 FOOT EAST OF THE WEST CORNER OF THE SIDEWALK, AND ABOUT 1/2 FOOT LOWER THAN THE TRACK.

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  • The NAVD 88 height was computed by applying the VERTCON shift value to the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.) The vertical order pertains to the superseded datum.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.