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Details for Benchmark: JK0961

N 38° 24.317 W 104° 59.433 (NAD 83)

Altitude: 5235.57

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

Location:
In FREMONT county, CO View Original Datasheet
Designation:
K 430
Marker Type:
metal rod
Setting:
a metal rod driven into the ground
Stability:
Probably hold position/elevation well.

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Found as described.

[Photos:]
photoJK0961 K 430

Documented History (by the NGS)

01/01/1984 by NGS (MONUMENTED)
DESCRIBED BY NATIONAL GEODETIC SURVEY 1984 22.4 KM (13.9 MI) EAST FROM CANON CITY. 22.4 KM (13.9 MI) EASTERLY ALONG U.S. HIGHWAY 50 FROM ITS JUNCTION WITH STATE HIGHWAY 115 IN CANON CITY, 4.7 KM (2.9 MI) EAST OF THE INTERSECTION OF STATE HIGHWAY 115 IN PENROSE, 21.6 M (70.9 FT) SOUTH OF THE CENTERLINE OF THE EAST BOUND LANES OF THE HIGHWAY, 18.3 M (60.0 FT) EAST OF THE CENTERLINE OF M STREET, AND 0.3 M (1.0 FT) NORTH OF A FENCE. NOTE--ACCESS TO DATUM POINT IS HAD THROUGH A 5-INCH LOGO CAP. THE MARK IS 0.3 METERS E FROM A WITNESS POST THE MARK IS 2.0 M BELOW THE HIGHWAY.

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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