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Details for Benchmark: DV2335

N 33° 22.633 W 112° 10.167 (NAD 83)

Altitude: 1014.41

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

Location:
In MARICOPA county, AZ View Original Datasheet
Designation:
B 521
Marker Type:
vertical control disk
Setting:
massive structures with deep foundations
Stability:
Most reliable and expected to hold position/elevation well.

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Found it in great shape at 1110 hrs. It is in the base of a metal power pole west of 51 ave on Baseline north of Discount tire.

[Photos:]
photoDV 2335
B521
photoDV 2335
B 521 LOOKING N W

in great shape

[Photos:]
photoIMG_20130125_143747
photoIMG_20130125_143750

Recovered. Pictures are accurate as to current condition

[Photos:]
photoDV2335 - Mark with GPSr
photoDV2335 - looking easterly

Found this one one the way home from a hike at South Mountain this morning. Recovered as described in good condition.

[Photos:]
photoDV2335

Recovered in good condition as described with the following update to the description - the chain link fence is gone. Handheld coordinates:
N 33° 22.641 W 112° 10.176 (NAD 83).

[Photos:]
photoDV2335 - Benchmark - Maricopa County, AZ
photoDV2335 - South looking North
N 33° 22.644 W 112° 10.176

The description is adequate, except that the mark is actually IN the footing of the tower.

[Photos:]
photoB 521 / DV2335

Documented History (by the NGS)

1/1/1994 by NGS (MONUMENTED)
DESCRIBED BY NATIONAL GEODETIC SURVEY 1994 1.7 KM (1.05 MI) NORTHERLY ALONG 51ST AVENUE FROM THE POST OFFICE IN LAVEEN, NEAR THE SOUTHEAST CORNER OF THE CONCRETE FOOTING FOR HIGH LINE TOWER NUMBER 32, 133.7 M (438.6 FT) WEST THE AVENUE CENTERLINE, 17.6 M (57.7 FT) SOUTH OF THE CENTERLINE OF BASELINE ROAD, 5.1 M (16.7 FT) SOUTHEAST OF THE SOUTHEAST CORNER OF A CHAIN-LINK FENCE ENCLOSING A WELL, 1.0 M (3.3 FT) ABOVE THE LEVEL OF THE ROAD, AND 0.5 M (1.6 FT) ABOVE THE GROUND SURFACE.

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 August 1994.
  • 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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