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Details for Benchmark: LN0268

N 40° 12.750 W 109° 22.833 (NAD 83)

Altitude: 5450.55

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

Location:
In UINTAH county, UT View Original Datasheet
Designation:
B 27
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 40° 12.768 W 109° 22.846

Bench Mark B 27 was recovered as described, in good condition.

[Photos:]
photoLN0268 20060408 G (Uintah Co. Utah)
Bench Mark B 27 w/GPSr.
photoLN0268 20060408 C (Uintah Co. Utah)
Bench Mark B 27.
photoLN0268 20060408 B (Uintah Co. Utah)
Bench Mark B 27 from Eye Level.
photoLN0268 20060408 A1 S (Uintah Co. Utah)
South at Bench Mark B 27.
photoLN0268 20060408 A2 E (Uintah Co. Utah)
East at Bench Mark B 27.

Documented History (by the NGS)

01/01/1933 by CGS (MONUMENTED)
DESCRIBED BY COAST AND GEODETIC SURVEY 1933 13.8 MI SE FROM JENSEN. ABOUT 13.8 MILES SOUTHEAST ALONG THE WATSON-JENSEN ROAD FROM JENSEN, UINTAH COUNTY, ABOUT 1/2 MILE SOUTHWEST OF A ROW OF POLES, AT THE TOP OF A RIDGE, ON THE OUTSIDE OF A CURVE, AND 48 FEET SOUTHWEST OF THE CENTER LINE OF THE ROAD. A STANDARD DISK, STAMPED 5446.554 B 27 1933 AND SET IN THE TOP OF A CONCRETE POST.
01/01/1949 by NGS (GOOD)
RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1949 RECOVERED IN GOOD CONDITION.
01/01/1981 by NGS (GOOD)
RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1981 THE BENCH MARK IS ABOUT 22 KM (13.8 MILES) SOUTHEAST ALONG THE WATSON-JENSEN ROAD FROM JENSEN, UNITAH COUNTY, AT THE TOP OF A RIDGE, AT THE OUTSIDE OF AN ABANDONED SECTION OF THE JENSEN-WATSON ROAD AND 14.9 M (49 FEET) SOUTHWEST FROM THAT ROAD. IT IS 55.2 M (181 FEET) FROM THE PAVED ROAD NOW BEING USED, 51.5 M (169 FEET) EAST FROM A TELEPHONE POLE, AND 45.4 M (149 FEET) SOUTH-SOUTHEAST FROM AN EAST-WEST DIRT ROAD.

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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