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Details for Benchmark: CZ2499

N 32° 38.783 W 111° 35.133 (NAD 83)

Altitude: 1615.7

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

Location:
In PINAL county, AZ View Original Datasheet
Designation:
G 516
Marker Type:
metal rod
Setting:
stainless steel rod in sleve
Stability:
Probably hold position/elevation well.

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Recovered as described, in good condition. GPS (HH2) co-ordinates N32º38.796' W111º35.155'.

[Photos:]
photoG 516 / CZ2499
A close-up of the mark, with the GPSr.
photoG 516 / CZ2499
A close-up of the mark alone.
photoG 516 / CZ2499
A wide view of the general area, looking east.

Documented History (by the NGS)

1/1/1991 by NGS (MONUMENTED)
DESCRIBED BY NATIONAL GEODETIC SURVEY 1991 0.3 KM (0.20 MI) SOUTHERLY ALONG MAIN STREET FROM THE POST OFFICE IN ELOY, THENCE 0.5 KM (0.30 MI) SOUTHEASTERLY ALONG STATE HIGHWAY 84, THENCE 11.4 KM (7.10 MI) SOUTHERLY ALONG SUNSHINE BOULEVARD, THENCE 3.2 KM (2.00 MI) WESTERLY ALONG PRETZER ROAD, 15.1 M (49.5 FT) NORTH OF THE ROAD CENTER, 11.2 M (36.7 FT) EAST OF THE CENTER OF TWEEDY ROAD, 5.9 M (19.4 FT) SOUTH-SOUTHWEST OF THE SOUTHWEST CORNER OF A CHAIN-LINK FENCE AT THE WEST END OF AN IRRIGATION DITCH, 1.1 M (3.6 FT) EAST OF A T-JUNCTION UTILITY POLE, 0.5 M (1.6 FT) WEST OF A WITNESS POST, AND 0.3 M (1.0 FT) ABOVE THE LEVEL OF THE ROAD. NOTE--ACCESS TO THE DATUM POINT IS THROUGH A 5-INCH LOGO CAP.

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 November 1993.
  • 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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