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Details for Benchmark: HS3100

N 37° 20.150 W 121° 52.150 (NAD 83)

Altitude: 94.8

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

Location:
In SANTA CLARA county, CA View Original Datasheet
Designation:
A 875
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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The coordinates put it in the park, but it's actually on the opposite side of William St. Look for the spray painted "BM956" on the sidewalk, then look for the hole in the top of the shrubbery. It's pretty dirty but it's there.

[Photos:]
photoA 875
photoA 875 setting
There's a hole in the top of the bushes directly above the spray paint.

Still hiding, but a bit of a hole to see it -- maybe to give the snail a view?

[Photos:]
photoHS3100

Our 6th benchmark of the day. Wear you gloves, the bushes are getting big and thick.

#5 of 6 benchmaeks for the day,
Really good thing this was marked oa the street as to where it was. Alot of shrub to dig through.

[Photos:]
photoA 875

Really buried under the plants, good thing for Falstaff's log and the spraypaint!

[Photos:]
photoIt's in there!
photoBad pic of HS3100

Found as described. Disk was completely overgrown by a bush.

[Photos:]
photoA 875 vicinity
The A 875 disk is on the curb between the telephone pole and the stop sign.
photoA 875 under bush
Another one circled in orange paint with curb markings.
photoA 875 Disk - San Jose, California

Documented History (by the NGS)

01/01/1954 by CGS (MONUMENTED)
DESCRIBED BY COAST AND GEODETIC SURVEY 1954 AT SAN JOSE. AT SAN JOSE, AT THE INTERSECTION OF EAST WILLIAM AND SOUTH 16TH STREETS, 16.0 FEET NORTHEAST OF THE PROLONGATION OF THE NORTHEAST CURB OF 16TH STREET, 4 1/2 FEET NORTHEAST OF A POWER LINE POLE, 1.3 FEET SOUTHEAST OF THE SOUTHEAST EDGE OF THE SIDEWALK, 1.0 FOOT NORTHWEST OF THE NORTHWEST CONCRETE CURB OF EAST WILLIAM STREET, ABOUT 1/2 FOOT HIGHER THAN THE STREET, ABOUT LEVEL WITH THE TOP OF THE CONCRETE CURB, FLUSH WITH THE GROUND, AND SET IN THE TOP OF A CONCRETE POST.
01/01/1967 by NGS (GOOD)
RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1967 RECOVERED IN GOOD CONDITION.

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.

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