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Details for Benchmark: HN0412

N 37° 07.867 W 111° 28.267 (NAD 83)

Altitude: 4002.6

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

Location:
In KANE county, UT View Original Datasheet
Designation:
A 151
Marker Type:
bench mark disk
Setting:
in rock outcrop
Stability:
Most reliable and expected to hold position/elevation well.

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N 37° 08.137 W 111° 28.206

Recovered in good condition.

After searching for this one and not finding it we left to check on 1 last benchmark. We got to a road sign and did a double take and went back and reread the description and discovered that we were looking for the wrong mark, but at the right location. When we read the correct datasheet and used a metal detector it was a quick find.

We put a rock over the benchmark to help protect the disk.

[Photos:]
photoA 151 in Kane County, UT.
photoA 151 view east
photoA 151 view north
photoA 151 view south
photoA 151 view west

Documented History (by the NGS)

1/1/1962 by CGS (MONUMENTED)
DESCRIBED BY COAST AND GEODETIC SURVEY 1962 15.5 MI E FROM GLEN CANYON CITY. ABOUT 15.5 MILES EAST ALONG A WINDING DIRT ROAD FROM THE CHEVRON SERVICE STATION AT GLEN CANYON CITY, 25 FEET NORTHWEST OF THE CENTER OF A WASH, 16.0 FEET SOUTH OF A METAL WITNESS POST, 15 FEET NORTH OF THE CENTERLINE OF THE ROAD, ABOUT LEVEL WITH THE ROAD, 1.7 FEET EAST OF A BOULDER MARKED WITH WHITE PAINT, AND SET IN THE TOP OF A ROCK OUTCROP NEAR THE NORTH EDGE OF A WASH. ABOUT 1 FOOT ABOVE THE BOTTOM OF THE WASH.
1/1/1979 by USGS (GOOD)
RECOVERY NOTE BY US GEOLOGICAL SURVEY 1979 FROM THE STOP AND SHOP STATION IN GLEN CANYON CITY, GO E. ON GRAIDED DIRT ROAD FOR 13.7 MI. TO ROAD FORK WITH SIGN ESCALANTE 88 MI. AND GRAND BENCH 27 MILES. GO RIGHT E ON DIRT ROAD FOR 0.7 MILES TO BM SITE. 15 FT. N. CENTER OF RD. SET IN THE TOP OF ROCK OUTCROP, 1 FT ABOVE THE BOTTOM OF THE WASH.
1/1/1979 by USGS (GOOD)
RECOVERY NOTE BY US GEOLOGICAL SURVEY 1979 FROM THE STOP AND SHOP STATION IN GLEN CANYON CITY, GO E. ON GRAIDED DIRT ROAD FOR 13.7 MI. TO ROAD FORK WITH SIGN ESCALANTE 88 MI. AND GRAND BENCH 27 MILES. GO RIGHT E ON DIRT ROAD FOR 0.7 MILES TO BM SITE. 15 FT. N. CENTER OF RD. SET IN THE TOP OF ROCK OUTCROP, 1 FT ABOVE THE BOTTOM OF THE WASH.

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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