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Details for Benchmark: DV1726

N 33° 33.333 W 112° 16.333 (NAD 83)

Altitude: 1086.7

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

Location:
In MARICOPA county, AZ View Original Datasheet
Designation:
417 K
Marker Type:
bench mark disk
Setting:
footings/foundation walls of small/medium structures
Stability:
May hold, but of type commonly subject to surface motion.

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Recovered benchmark in good condition. Did not trespass on the private property where mark is located so no photo with GPSr.

[Photos:]
photowide view looking west
photoClose up of mark (from outside the fence)
photoAlternate view :-)

Located this bench mark with some difficulty as the map shows this BM on the east side of 99th Ave. yet it is on the west side of the road and on private property just inside the fence on the electrical tower.

Recovered in good condition as described.

[Photos:]
photoDV1726
photoWITH GPS
photoAREA
N 33° 33.337 W 112° 16.360

Found this benchmark today in good condition.

[Photos:]
photoCloseup of the benchmark with GPS
photoWide view looking southwest

Recovered in good condition. Handheld GPSr indicated coordinates of N 33 33 20.2 W 112 16 21.6 (DMS).

[Photos:]
photoDV1726 417 K closeup
photoDV1726 417 K wide shot looking west
photoWith the GPSr

Decided to see if I could find this since it is close to my house. Located in good condition.

[Photos:]
photoArea around the Benchmark
photoBenchmark w/gps

(I didn't realize this one was recovered...) Here are some additional pictures.

[Photos:]
photo417-K
photo417-K location setting

The description is adequate. Thank goodness the mark is personalized!

[Photos:]
photo417 K / DV1726

Documented History (by the NGS)

01/01/1982 by AZDT (MONUMENTED)
DESCRIBED BY ARIZONA DEPARTMENT OF TRANSPORTATION 1982 10.46 KM (6.5 MI) NORTH FROM TOLLESON. FROM INTERSTATE 10 AND 99TH AVENUE IN TOLLESON TRAVEL NORTH ALONG 99TH AVENUE FOR 6.5 MI (10.46 KM) TO DEEP WATER WELL AND MARK ON THE LEFT, 32 FT (9.75 METERS) WEST OF CENTERLINE OF 99TH AVENUE, A STANDARD AZDT ALUMINIUM CAP EPOXIED ON CONCRETE BASE OF HIGH VOLTAGE TOWER.

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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