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Details for Benchmark: MP0560

N 41° 01.988 W 106° 41.058 (NAD 83)

Altitude: 10981

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

Location:
In CARBON county, WY View Original Datasheet
Designation:
BLACKHALL LOOKOUT HOUSE
Marker Type:
lookout house
Setting:
setting not listed - see description
Stability:

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Documented History (by the NGS)

01/01/1949 by CGS (FIRST OBSERVED)
DESCRIBED BY COAST AND GEODETIC SURVEY 1949 (DHK) STATION IS THE TOP-CENTER OF THE BLACKHALL LOOKOUT HOUSE LOCATED ABOUT 13.5 MILES AIR LINE SOUTH-SOUTHEAST OF ENCAMPMENT AND ABOUT 2 MILES NORTH OF THE WYOMING-COLORADO LINE. THE LOOKOUT IS A ONE STORY STRUCTURE ABOUT 14-FOOT SQUARE AND BUILT OF WOOD. IT IS ON THE HIGHEST POINT OF BLACKHALL MOUNTAIN. THE TOP AND CENTER OF THE ROOF WAS THE POINT MEASURED TO.

Control Text

  • The horizontal coordinates were established by classical geodetic methods and adjusted by the National Geodetic Survey in January 1997.
  • 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.