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Details for Benchmark: JS0695

N 38° 44.000 W 121° 17.417 (NAD 83)

Altitude: 132.1

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

Location:
In PLACER county, CA View Original Datasheet
Designation:
G 855
Marker Type:
bench mark disk
Setting:
massive structures
Stability:
Probably hold position/elevation well.

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Will add more detail and photos later.

Found this while looking for geocaches... very cool

Quick stop while in the area.

N 38° 44.028 W 121° 17.438

My first benchmark! How cool. :) However, the coords are a bit off from the historical description. Also, the creek that it crosses is called Dry Creek, not Linda Creek as stated.

The coords that I have entered are at an accuracy of 18 feet, and an elevation of 103 feet.

Documented History (by the NGS)

01/01/1949 by CGS (MONUMENTED)
DESCRIBED BY COAST AND GEODETIC SURVEY 1949 1.2 MI S FROM ROSEVILLE. 1.2 MILES SOUTH ALONG U.S. HIGHWAY 99 E FROM THE FROM THE POST OFFICE AT ROSEVILLE, AT CONCRETE BRIDGE 19-OL OVER LINDA CREEK, IN THE TOP OF THE WEST FOOT WALK, 17.7 FEET WEST OF THE CENTER LINE OF THE HIGHWAY, AND ABOUT 0.8 FOOT HIGHER THAN THE HIGHWAY.
01/01/1975 by CADH (GOOD)
RECOVERY NOTE BY CA DIV OF HIGHWAYS 1975 RECOVERED IN GOOD CONDITION.
10/08/1988 by USPSQD (GOOD)
RECOVERY NOTE BY US POWER SQUADRON 1988 (EH) 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  • The NAVD 88 height was computed by applying the VERTCON shift value to the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.) The vertical order pertains to the superseded datum.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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