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Details for Benchmark: KK0852

N 39° 23.050 W 105° 47.550 (NAD 83)

Altitude: 9530.4

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

Location:
In PARK county, CO View Original Datasheet
Designation:
M 303
Marker Type:
bench mark disk
Setting:
light structures
Stability:
Mark of questionable or unknown stability.

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found today while tagging along with 2/3 Marine.

Found as described in good condition.

[Photos:]
photoKK0852 M 303

Documented History (by the NGS)

01/01/1951 by CGS (MONUMENTED)
DESCRIBED BY COAST AND GEODETIC SURVEY 1951 0.6 MI NE FROM JEFFERSON. 0.6 MILE NORTHEAST ALONG U.S. HIGHWAY 285 FROM THE POST OFFICE AT JEFFERSON, 350 FEET WEST OF A STOCK POND, 53 FEET NORTHWEST OF THE CENTER LINE OF THE HIGHWAY, 1.6 FEET NORTHWEST OF A FENCE, 5 FEET ABOVE THE LEVEL OF THE HIGHWAY, SET IN THE TOP OF THE CENTER OF THE NORTHWEST WINGWALL OF AN IRRIGATION CULVERT.

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 June 1991.
  • 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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