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Details for Benchmark: FR0381

N 35° 30.933 W 113° 19.133 (NAD 83)

Altitude: 5118.82

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

Location:
In YAVAPAI county, AZ View Original Datasheet
Designation:
U 1
Marker Type:
bench mark disk
Setting:
massive structures
Stability:
Probably hold position/elevation well.

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A mark from 1909.

[Photos:]
photoFR0381 PLN U1 1909
photoFR0381 ESE

Documented History (by the NGS)

Unknown by CGS (MONUMENTED)
01/01/1942 by NGS (GOOD)
DESCRIBED BY NATIONAL GEODETIC SURVEY 1942 IN NELSON. AT NELSON, YAVAPAI COUNTY, NEAR THE ATCHISON, TOPEKA AND SANTA FE RAILWAY STATION, 4 POLES WEST OF MILEPOST 459, AT STEEL-GIRDER BRIDGE A 460, IN THE TOP OF THE NORTH END OF THE WEST ABUTMENT, 1 FOOT FROM THE FACE, AND 1 FOOT FROM THE END OF COPING STONE. THE BOTTOM OF A SQUARE HOLE.

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 B indicates a distribution rate of 1.1 thru 2.0 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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