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Details for Benchmark: KM0135

N 39° 58.617 W 109° 10.700 (NAD 83)

Altitude: 5006.23

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

Location:
In UINTAH county, UT View Original Datasheet
Designation:
N 26
Marker Type:
bench mark disk
Setting:
set into the top of a round concrete monument
Stability:
May hold, but of type commonly subject to surface motion.

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N 39° 58.643 W 109° 10.703

Bench Mark N 26 was recovered in good condition. A new To Reach follows:

South on Utah Highway 45 to MP 1.3 and the BLM White River Access Road, thence west on a dirt road 0.30 mile to the station on the left. Mark is 76 feet west of the center line of the river access road, about 600 feet south of the abandoned White River Bridge.

[Photos:]
photoKM0135 20060408 G (Uintah Co. Utah)
Bench Mark N 26 w/GPSr.
photoKM0135 20060408 C (Uintah Co. Utah)
Bench Mark N 26.
photoKM0135 20060408 B (Uintah Co. Utah)
Bench Mark N 26 from Eye Level.
photoKM0135 20060408 A1 N (Uintah Co. Utah)
North at Bench Mark N 26.
photoKM0135 20060408 A2 W (Uintah Co. Utah)
West at Bench Mark N 26.

Documented History (by the NGS)

01/01/1933 by CGS (MONUMENTED)
01/01/1949 by NGS (GOOD)
DESCRIBED BY NATIONAL GEODETIC SURVEY 1949 3.8 MI S FROM BONANZA. ABOUT 3.8 MILES SOUTH ALONG THE WATSON-JENSEN ROAD FROM BONANZA, UINTAH COUNTY, ABOUT 600 FEET SOUTH OF THE WHITE RIVER TOLL BRIDGE, ABOUT 300 FEET NORTHEAST OF THE RIVER, ABOUT 300 FEET WEST OF THE BRIDGEKEEPERS QUARTERS, ON THE TOP OF A SANDY BANK, ABOUT 30 FEET NORTH OF A SMALL ABANDONED CELLAR, AND ABOUT 40 FEET SOUTHWEST OF THE CENTER LINE OF THE ROAD. A STANDARD DISK, STAMPED 5002.365 N 26 1933 AND SET IN THE TOP OF A CONCRETE POST. NOTE-- THE BRIDGE IS NO LONGER A TOLL BRIDGE. THE BRIDGEKEEPERS QUARTERS IS STILL STANDING.

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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