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Details for Benchmark: LN0419

N 40° 59.867 W 109° 40.583 (NAD 83)

Altitude: 6157.81

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

Location:
In DAGGETT county, UT View Original Datasheet
Designation:
E 385
Marker Type:
metal rod
Setting:
stainless steel rod
Stability:
Probably hold position/elevation well.

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Found this while out caching.

N 40° 59.893 W 109° 40.596

Metal Rod E 385 was recovered as described, in good condition.

[Photos:]
photoLN0419 20070513 G (Daggett Co., UT)
Metal Rod E 385 w/GPSr.
photoLN0419 20070513 C (Daggett Co., UT)
Metal Rod E 385.
photoLN0419 20070513 B (Daggett Co., UT)
Metal Rod E 385 from Eye Level.
photoLN0419 20070513 A1 SW (Daggett Co., UT)
Southwest at Metal Rod E 385.
photoLN0419 20070513 A2 E (Daggett Co., UT)
East at Metal Rod E 385.

On the Wyoming/Utah stateline. This benchmark has a vertical marker, which made it a snap to find- also has a hinged lid over it. We couldn't actually see the marker, which was filled with snowmelt and ice, but assumed it was there.

Documented History (by the NGS)

01/01/1984 by NGS (MONUMENTED)
DESCRIBED BY NATIONAL GEODETIC SURVEY 1984 4.2 KM (2.6 MI) EAST FROM MANILA. 4.2 KM (2.6 MI) EASTERLY ALONG STATE HIGHWAY 43 FROM ITS JUNCTION WITH STATE HIGHWAY 44 IN MANILA, AT THE UTAH-WYOMING STATE LINE, 17.8 M (58.4 FT) SOUTHEAST OF THE CENTERLINE OF THE HIGHWAY, 6.8 M (22.3 FT) SOUTH OF THE CENTER OF A DIRT ROAD LEADING EAST, 6.8 M (22.3 FT) EAST-NORTHEAST OF THE CENTER OF A GATE AND FIELD ENTRANCE, AND 3.9 M (12.8 FT) EAST OF A FENCE CORNER. NOTE=ACCESS TO THE DATUM POINT IS THROUGH A 5-INCH LOGO CAP. THE MARK IS 0.3 METERS N FROM A WITNESS POST AND FENCE THE MARK IS 0.6 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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