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Details for Benchmark: LM0690

N 40° 25.212 W 107° 53.147 (NAD 83)

Altitude: 6032.4

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

Location:
In MOFFAT county, CO View Original Datasheet
Designation:
6020
Marker Type:
bench mark disk
Setting:
setting not listed - see description
Stability:
Mark of questionable or unknown stability.

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Bench Mark 6020 was recovered in good condition.

A new To Reach follows: Bench Mark 6020 is at MP 11.05 of Moffat County Road 17. It is 215 feet north of the centerline of MCR 17, 55 feet north of a fence, and 3 feet southwest of the Township Corner.

[Photos:]
photoLM0690 20060402 G (Moffat Co. Colorado)
Bench Mark 6020 w/GPSr.
photoLM0690 20060402 C (Moffat Co. Colorado)
Bench Mark 6020.
photoLM0690 20060402 B (Moffat Co. Colorado)
Bench Mark 6020 from Eye Level.
photoLM0690 20060402 A1 NE (Moffat Co. Colorado)
Northeast at Bench Mark 6020.
photoLM0690 20060402 A2 NW (Moffat Co. Colorado)
Northwest at Bench Mark 6020.
photoLM0690 20060402 A3 SW (Moffat Co. Colorado)
Southwest at Bench Mark 6020.
photoLM0690 20060402 A4 N (Moffat Co. Colorado)
North at Bench Mark 6020.

Documented History (by the NGS)

1/1/1912 by USGS (MONUMENTED)
1/1/1912 by USGS (MONUMENTED)
1/1/1962 by USGS (GOOD)
DESCRIBED BY US GEOLOGICAL SURVEY 1962 A USGS BM BESIDE TOWNSHIP AND RANGE CORNER 5 AND 6 N., RS. 93 AND 94 W., 3.0 MI. SE. OF GOVERNMENT BRIDGE OVER YAMPA RIVER. TOWNSHIP AND RANGE CORNER IS 3.0 FT. W. OF BM. STATION MARK--STANDARD BRONZE BENCH MARK TABLET STAMPED ---6020---.

Control Text

  • The horizontal coordinates were established by classical geodetic methods and adjusted by the National Geodetic Survey in January 1993.
  • The NAVD 88 height was computed by applying the VERTCON shift value to the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.) The vertical order pertains to the superseded datum.
  • The Laplace correction was computed from DEFLEC99 derived deflections.
  • The geoid height was determined by GEOID99.

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