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Details for Benchmark: FS0456

N 35° 52.200 W 114° 04.967 (NAD 83)

Altitude: 3971.37

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

Location:
In MOHAVE county, AZ View Original Datasheet
Designation:
T 53
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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N 35° 52.210 W 114° 04.990

Recovered in good condition. Next to an old witness sign and a very old, very big Joshua Tree.

[Photos:]
photoT 53 in Mohave County AZ.
photoT 53 witness sign
photoT 53 looking north.
photoT 53 near the Joshua Tree

Documented History (by the NGS)

01/01/1934 by CGS (MONUMENTED)
01/01/1950 by NGS (GOOD)
DESCRIBED BY NATIONAL GEODETIC SURVEY 1950 20 MI S FROM PIERCES FERRY. 13.4 MILES SOUTH ALONG THE GRAVELED PARK SERVICE ROAD FROM THE RANGER STATION AT PIERCES FERRY, THENCE 6.6 MILES SOUTH ALONG A DIRT ROAD, 0.9 MILE NORTH OF THE JUNCTION OF A DIRT ROAD LEADING SOUTHEAST, 13 FEET EAST OF THE CENTER LINE OF THE ROAD, 2.8 FEET NORTHWEST OF A WITNESS POST, ABOUT LEVEL WITH THE ROAD, AND SET IN THE TOP OF A CONCRETE POST PROJECTING 0.6 FOOT ABOVE GROUND.
01/01/1986 by USPSQD (GOOD)
RECOVERY NOTE BY US POWER SQUADRON 1986 (SDC) RECOVERED IN GOOD CONDITION.

Control Text

  • The horizontal coordinates were scaled from a topographic map and have an estimated accuracy of +/- 6 seconds.
  • The orthometric height was determined by differential leveling and adjusted by the National Geodetic Survey in 1992. * This is a POSTED BENCH MARK height. Code A indicates a distribution rate of 0.0 thru 1.0 mm/km.
  • The geoid height was determined by GEOID99.
  • The dynamic height is computed by dividing the NAVD 88 geopotential number by the normal gravity value computed on the Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45 degrees latitude (G = 980.6199 gals.).
  • The modeled gravity was interpolated from observed gravity values.

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