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Details for Benchmark: DU2306

N 33° 25.750 W 111° 41.033 (NAD 83)

Altitude: 1453.49

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

Location:
In MARICOPA county, AZ View Original Datasheet
Designation:
P 517
Marker Type:
metal rod
Setting:
stainless steel rod
Stability:
Probably hold position/elevation well.

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Recovered in good condition at N 33° 25.772 W 111° 41.053.

This entry was edited by shorbird on Thursday, 28 April 2011 at 16:56:04 UTC.

[Photos:]
photoDU2306(P 517) - Mesa AZ
photoDU2306 - Eye level
photoDU2306 - Looking N on Power Rd.

Found this one with the lid missing but otherwise OK.

[Photos:]
photodu2306-1
photodu2306-2
photodu2306 looking east

Found it today..

[Photos:]
photoDU2306

Recovered. Obviously the plate has been long gone which makes me wonder how the rod hasn't been covered up. Pictures are accurate as to current condition.

[Photos:]
photoDU2306 - Mark with GPSr
photoDu2306 - Mark and the pole

Found in good shape, as described.

[Photos:]
photoDU2306
photoDU2306 Closeup

Recovered.

[Photos:]
photoClose-Up of GPS and BM

Recovered as described, except that the referenced power poles have been removed. The mark is about three feet south of the concrete base of a monolithic steel power pole/tower.

[Photos:]
photoP 517 / DU2306
A close-up of the mark, with the GPSr.
photoP 517 / DU2306
A close-up of the mark alone.
photoP 517 / DU2306
A wider view, looking north along Power Road.

The logo cap was missing however the rod was still there. Easy find.

Documented History (by the NGS)

01/01/1992 by NGS (MONUMENTED)
DESCRIBED BY NATIONAL GEODETIC SURVEY 1992 14.5 KM (9.00 MI) EASTERLY ALONG U.S. HIGHWAY 60 (MAIN STREET) FROM THE JUNCTION OF STATE HIGHWAY 87 (COUNTRY CLUB DRIVE) IN MESA, THENCE 1.5 KM (0.95 MI) NORTHERLY ALONG NORTH POWERS ROAD, 66.7 M (218.8 FT) SOUTH OF THE CENTERLINE OF EAST ADOBE ROAD, 8.4 M (27.6 FT) NORTH OF UTILITY POLE NUMBER 15A, 3.8 M (12.5 FT) NORTHWEST OF UNDERGROUND CABLE JUNCTION BOX NUMBER 711, 1.7 M (5.6 FT) SOUTH OF UTILITY POLE NUMBER 16 WITH 3 GUY CABLES, 1.5 M (4.9 FT) EAST OF AND LEVEL WITH THE EAST CURB OF THE ROAD, AND 0.7 M (2.3 FT) WEST OF THE WEST EDGE OF A SIDEWALK. 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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