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Details for Benchmark: HN0564

N 37° 04.750 W 111° 31.533 (NAD 83)

Altitude: 4023.99

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

Location:
In KANE county, UT View Original Datasheet
Designation:
C 144
Marker Type:
bench mark disk
Setting:
copper-clad steel rod
Stability:
Probably hold position/elevation well.

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N 37° 04.792 W 111° 31.583

Recovered in good condition. Direction seemed pretty good and the X on the USGS quad helped. The witness post is laying on the ground.

[Photos:]
photoC 144 near Lake Powell
photoC 144 view east
photoC 144 view north
photoC 144 view south
photoC 144 view west
photoC 144 view NW
The red arrow points to a balanced rock shown in the close up picture.
photoC 144 balanced rock

Documented History (by the NGS)

01/01/1962 by CGS (MONUMENTED)
DESCRIBED BY COAST AND GEODETIC SURVEY 1962 9.2 MI E FROM GLEN CANYON CITY. ABOUT 9.2 MILES EAST ALONG A WINDING DIRT ROAD FROM THE CHEVRON SERVICE STATION AT GLEN CANYON CITY, 55 FEET SOUTHEAST OF THE CENTERLINE OF THE ROAD, 2.7 FEET SOUTH OF A METAL WITNESS POST, ABOUT LEVEL WITH THE ROAD, AND SET ON TOP OF A 5/8 INCH COPPER-COATED ROD THAT IS DRIVEN TO A DEPTH OF 9 1/2 FEET AND IS ENCASED IN A 6 INCH TILE PROJECTING ABOUT 12 INCHES.
01/01/1977 by USGS (GOOD)
RECOVERY NOTE BY US GEOLOGICAL SURVEY 1977 FROM THE STOP AND SHOP STATION IN GLEN CANYON CITY, GO E. ON GRAIDED DIRT ROAD FOR 8.65 MILES TO A BEND IN ROAD. BM IS ABOUT 0.2 MILES SE OF ROAD AND SET ON TOP OF 5/8 INCH ROD, ENCASED IN A 6 INCH TILE PROJECTING ABOUT 8 INCHES.
01/01/1977 by USGS (GOOD)
RECOVERY NOTE BY US GEOLOGICAL SURVEY 1977 FROM THE STOP AND SHOP STATION IN GLEN CANYON CITY, GO E. ON GRAIDED DIRT ROAD FOR 8.65 MILES TO A BEND IN ROAD. BM IS ABOUT 0.2 MILES SE OF ROAD AND SET ON TOP OF 5/8 INCH ROD, ENCASED IN A 6 INCH TILE PROJECTING ABOUT 8 INCHES.

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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