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Details for Benchmark: ET1045

N 34° 00.009 W 113° 08.483 (NAD 83)

Altitude: 2251

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

Location:
In YAVAPAI county, AZ View Original Datasheet
Designation:
THOMPSON MONUMENT 3
Marker Type:
NGS Benchmark
Setting:
setting not listed - see description
Stability:
Mark of questionable or unknown stability.

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Monument is not in good shape

[Photos:]
photoRemains of boundary marker
photoBoundary marker remains is far - Rabbit BM is near

nice spot

Recovered in poor condition.

[Photos:]
photoET1045
photoWith GPS
photoRABBIT in Foreground with ET1045 in Background

Recovered in good condition. The monument is a triangular pyramidal concrete post projecting about 2 feet, with a 1 inch iron pipe projecting an additional six inches.
The west face has a bronze plaque giving the surveyed co-ordinates. The southeast face has a bronze plaque marked 'Maricopa County 1924'. The northeast face has a bronze plaque marked 'Yavapai County 1924'.

[Photos:]
photoTHOMPSON MONUMENT 3 / ET1045
From the southeast, showing the Maricopa County 1924 plaque.
photoTHOMPSON MONUMENT 3 / ET1045
A close-up of the plaque on the west side, giving the co-ordinates.
photoTHOMPSON MONUMENT 3 / ET1045
A wider view of the north corner showing the Yavapai County side, and the plaque with the co-ordinates.
photoTHOMPSON MONUMENT 3 / ET1045
A close-up of the mark, with the GPSr.

Recovered in poor condition – at the adjusted location and 17.9 feet from Station Rabbit (ET1046) found a metal stem set into a drill hole in a 1 foot high by 1 foot wide setting.

[Photos:]
photoET1045 – South looking North
ET1045 in the foreground ET1046 in the background.
photoET1045 - Benchmark – Yavapai County, AZ

Documented History (by the NGS)

01/01/1924 by CGS (MONUMENTED)
DESCRIBED BY COAST AND GEODETIC SURVEY 1924 (WM) STATION IS 5.45 METERS (17.9 FEET) FROM STATION RABBIT S 11 DEG 24 MIN E.

Control Text

  • The horizontal coordinates were established by classical geodetic methods and adjusted by the National Geodetic Survey in August 1993.
  • The orthometric height was scaled from a topographic map.
  • The Laplace correction was computed from DEFLEC99 derived deflections.
  • The geoid height was determined by GEOID99.

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