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Details for Benchmark: DA0619

N 32° 58.300 W 112° 34.150 (NAD 83)

Altitude: 1049.48

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

Location:
In MARICOPA county, AZ View Original Datasheet
Designation:
H 285
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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Found in good shape.

[Photos:]
photoDA0619
photoDA0619 w GPSr
photoDA0619 Area

Recovered as described, in good condition.

[Photos:]
photoH 285 / DA0619
A close-up of the mark, with the GPSr.
photoH 285 / DA0619
A close-up of the mark alone.
photoH 285 / DA0619
A wide view of the general area, looking south.

Documented History (by the NGS)

01/01/1949 by CGS (MONUMENTED)
01/01/1967 by NGS (GOOD)
DESCRIBED BY NATIONAL GEODETIC SURVEY 1967 8.7 MI E FROM GILA BEND. 8.7 MILES EAST ALONG THE SOUTHERN PACIFIC RAILROAD FROM THE STATION AT GILA BEND, IN S 21, T 5 S, R 3 W, 0.45 MILE EAST OF MILEPOST 864, 41 FEET NORTH OF THE NORTH RAIL OF THE NORTH SET OF TRACKS, 10 FEET NORTHEAST OF TELEPHONE POLE 44-F, 1.3 FEET SOUTH OF A METAL WITNESS POST, ABOUT 3 FEET BELOW THE LEVEL OF THE TRACKS, AND SET IN THE TOP OF A CONCRETE POST PROJECTING 6 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.
12/02/1994 by USPSQD (GOOD)
RECOVERY NOTE BY US POWER SQUADRON 1994 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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