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Details for Benchmark: LN0026

N 40° 31.200 W 108° 15.267 (NAD 83)

Altitude: 5884.8

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

Location:
In MOFFAT county, CO View Original Datasheet
Designation:
D 46
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° 31.227 W 108° 15.271

Bench Mark D 46 was recovered in good condition.

A new To Reach follows: From MP 19.1 of Moffat County Road 23, southeast 0.12 mile; southeast 0.12 mile from a cattleguard on MCR 23; 30 feet south of a track road; 35 feet south of a fenceline. The bridge is no longer at this location.

[Photos:]
photoLN0026 20060402 G (Moffat Co. Colorado)
Bench Mark D 46 w/GPSr.
photoLN0026 20060402 C (Moffat Co. Colorado)
Bench Mark D 46.
photoLN0026 20060402 B (Moffat Co. Colorado)
Bench Mark D 46 from Eye Level.
photoLN0026 20060402 A1 S (Moffat Co. Colorado)
South at Bench Mark D 46.
photoLN0026 20060402 A2 NE (Moffat Co. Colorado)
Northeast at Bench Mark D 46.
photoLN0026 20060402 A3 W (Moffat Co. Colorado)
West at Bench Mark D 46.

Documented History (by the NGS)

1/1/1934 by CGS (MONUMENTED)
1/1/1960 by USGS (GOOD)
DESCRIBED BY US GEOLOGICAL SURVEY 1960 10.8 MI W FROM MAYBELL. 6.1 MILES WEST ALONG COLO. 318 FROM MAYBELL (JUNCTION OF U.S. 40 AND COLO. 318), 4.7 MILES ALONG A GRADED ROAD, 75 YARDS WEST OF THE WEST END OF A WOODEN BRIDGE OVER LONE TREE GULCH, AND 26 FEET WEST OF THE CENTERLINE OF THE ROAD. A STANDARD DISK, STAMPED D 46 1934 AND SET IN THE TOP OF A CONCRETE POST.

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 1992. * This is a POSTED BENCH MARK height. Code B indicates a distribution rate of 1.1 thru 2.0 mm/km.
  • 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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