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Details for Benchmark: MR0483

N 41° 55.050 W 111° 56.850 (NAD 83)

Altitude: 4463.48

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

Location:
In CACHE county, UT View Original Datasheet
Designation:
M 170
Marker Type:
bench mark disk
Setting:
massive structures
Stability:
Probably hold position/elevation well.

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N 41° 55.078 W 111° 56.868

Found as described. Marker in so-so shape. Marker is now mostly below grade. Had to dig through road grade and asphalt to expose all of it. This exact building appears to no longer be in use.

The datasheet coordinates are about 200 feet off. New coords logged (N 41° 55.078 W 111° 56.868), though it's not exactly hard to find based on the description.

On a side note, this is our first benchmark find and my 6-year-old daughter and I are hooked!

[Photos:]
photoMR0483
MR0483 - Note mark was mostly before grade and is barely legible.
photoMR0483 - wider view
Our first benchmark find. We're hooked.
photoMR0483 - building view
Mark located near Southeast corner (center of photo).

Documented History (by the NGS)

1/1/1967 by CGS (MONUMENTED)
DESCRIBED BY COAST AND GEODETIC SURVEY 1967 IN TRENTON. AT TRENTON, AT THE CROSSING OF STATE HIGHWAY 170 OVER THE UNION PACIFIC RAILROAD, ABOUT 300 FEET WEST OF THE MAIN TRACK, 118 1/2 FEET NORTH OF THE CENTER LINE OF THE HIGHWAY, SET VERTICALLY IN THE SOUTH FACE OF TRENTON FEED CO-OP BUILDING, 17 1/2 FEET EAST OF THE CENTER OF THE DOOR OF THE OFFICE BUILDING, 0.8 FOOT WEST OF THE SOUTHEAST CORNER OF THE BUILDING, AND ABOUT 0.6 FOOT ABOVE THE GROUND.

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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