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Details for Benchmark: DA0614

N 32° 57.767 W 112° 37.167 (NAD 83)

Altitude: 930.63

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

Location:
In MARICOPA county, AZ View Original Datasheet
Designation:
928
Marker Type:
pipe cap
Setting:
set into the top of a metal pipe driven into the ground
Stability:
Mark of questionable or unknown stability.

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Found in good shape.

[Photos:]
photoDA0614
photoDA0614 w GPSr
photoDA0614 Area

Recovered as described, in good condition.

[Photos:]
photo928 / DA0614
A close-up of the mark, with the GPSr.
photo928 / DA0614
A close-up of the mark alone.
photo928 / DA0614
A wide view of the general area, looking southeast.

Documented History (by the NGS)

Unknown by USGS (MONUMENTED)
01/01/1967 by NGS (GOOD)
DESCRIBED BY NATIONAL GEODETIC SURVEY 1967 5.7 MI E FROM GILA BEND. 5.7 MILES EAST ALONG THE SOUTHERN PACIFIC RAILROAD FROM THE STATION AT GILA BEND, IN S 25, T 5 S, R 4 W, 3 TELEPHONE POLES EAST OF A RAILROAD TRESTLE, 5 1/2 RAILS WEST OF A METAL TELEPHONE BOOTH, 43 FEET SOUTH OF THE SOUTH RAIL OF THE MAIN TRACK, 2 FEET SOUTH OF A TELEPHONE POLE, 1.0 FOOT EAST OF A METAL WITNESS POST, ABOUT 1 1/2 FEET BELOW THE LEVEL OF THE TRACKS, A U.S. GEOLOGICAL SURVEY CAP ON THE TOP OF A 3-INCH IRON PIPE PROJECTING 8 INCHES.
01/01/1980 by NGS (GOOD)
RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1980 RECOVERED IN GOOD CONDITION.
01/01/1980 by NGS (GOOD)
RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1980 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 June 1991.
  • 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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