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Details for Benchmark: HS3097

N 37° 20.200 W 121° 52.083 (NAD 83)

Altitude: 104.4

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

Location:
In SANTA CLARA county, CA View Original Datasheet
Designation:
U 323
Marker Type:
bench mark disk
Setting:
massive structures
Stability:
Probably hold position/elevation well.

Must Read!

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Found it along with the others on benchmark bridge! This one is probably in the best shape out of the four.

[Photos:]
photoU 323
photoSetting for all four on the bridge
N 37° 20.217 W 121° 52.096

Another of the "4-fee."

[Photos:]
photoHS3097

Another find on this mother lode of benchmarks.

The fourth of 6 we went looking for.

2nd od 6 benchmarks for the day.
This bridge was a gold mine.

[Photos:]
photoU 323

After finding the new nearby geocache, I then found the 4 benchmarks too! Very fun 5-4-1! 50sumtin

Ok, now I get it. the first letter is different. Huh.

[Photos:]
photome, there.
photoNearby tile work

Out for a walk with my husband. Wow, this is amazing, four benchmarks on the same bridge.

[Photos:]
photoHS3097

One of several finds on Benchmark Bridge, this disk is a little chewed up but not bad.

[Photos:]
photoHS3097

As I stated in the log for HS3095: Wooo hooo! Four benchmarks on a single bridge! Found them all.

[Photos:]
photoHS3097.JPG
photoHS3097 Location.JPG

HS3095, HS3096, HS3097, and HS3098 are four benchmarks all on the same side of the bridge on William Street near 18th Street. This cement guardrail and the disks are over 71 years old and are in excellent condition. This is the third one from the north end.

[Photos:]
photoU323 vicinity
Sidewalk marked U323 and 1098.
photoU323 disk - San Jose, California

Got the BM, not the cache.

Found looking for bill's dental

Found this one as its close to Bills Dental Cache.

Found while looking for Bill's Dental Cache.

Found it while looking for Bill's Dental Work cache nearby.
Very easy find.

One of the four,all on same side of the bridge.Right next to Bill's Dental Work cache.

Found it when looking for bill's dental.

Found with CaliFamily

Found it

Found on a great Sunday day with CacheCreatures. In great shape. Thanks!!

[Photos:]
photoU323

Found with the others!

[Photos:]
photoHS3097

Number two!!!

[Photos:]
photoU323

3rd benchmark in one minute, one more to go.

All in a row!

one more

Just another one of the four on this bridge.

Found it.

[Photos:]
photoU323

Found this while searching for Bill's Dental Work.

N 37° 20.214 W 121° 52.098

Third of four very unusual benchmarks, all placed close together on the same side of the bridge.

Found while (unsuccessfully) looking for Bill's Dental Work cache...obviously I was really close...

jta

Found this while searching for Bill's Dental Work Cache!

Found it while looking for Bill's dental work cache

found it.

Documented History (by the NGS)

1/1/1934 by CGS (MONUMENTED)
1/1/1954 by NGS (GOOD)
DESCRIBED BY NATIONAL GEODETIC SURVEY 1954 AT SAN JOSE. AT SAN JOSE, ON EAST WILLIAM STREET, BETWEEN 16TH AND 18TH STREETS, AT A CONCRETE BRIDGE OVER COYOTE CREEK, IN THE TOP OF THE EAST GUARD RAIL, DIRECTLY OVER THE SOUTH PIER, 17.5 FEET EAST OF THE CENTER LINE OF THE STREET, AND ABOUT 4 FEET HIGHER THAN THE STREET.
1/1/1967 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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