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Details for Benchmark: LN0073

N 40° 10.750 W 108° 26.283 (NAD 83)

Altitude: 5629.7

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

Location:
In RIO BLANCO county, CO View Original Datasheet
Designation:
D 154 RESET
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° 10.787 W 108° 26.293

Bench Mark D 154 RESET was recovered as described, in good condition.

[Photos:]
photoLN0073 20060402 G (Rio Blanco Co. Colorado)
Bench Mark D 154 RESET w/GPSr.
photoLN0073 20060402 C (Rio Blanco Co. Colorado)
Bench Mark D 154 RESET.
photoLN0073 20060402 B (Rio Blanco Co. Colorado)
Bench Mark D 154 RESET from Eye Level.
photoLN0073 20060402 A1 S (Rio Blanco Co. Colorado)
South at Bench Mark D 154 RESET.
photoLN0073 20060402 A2 W (Rio Blanco Co. Colorado)
West at Bench Mark D 154 RESET.

Documented History (by the NGS)

1/1/1950 by CODH (MONUMENTED)
1/1/1966 by USGS (GOOD)
DESCRIBED BY US GEOLOGICAL SURVEY 1966 34.7 MI NW FROM MEEKER. MEEKER, 34.7 MILES NORTHWEST OF POST OFFICE ALONG STATE HIGHWAY 64, RIO BLANCO COUNTY. 0.3 MILE WEST OF A 120 INCH CORRUGATED METAL PIPE AT THE EAST FOOT OF STEDMAN MESA, 75 FEET EAST OF THE OUTLET OF A SMALL CULVERT IN FILL, AND 38 FEET SOUTH OF THE CENTER LINE OF THE HIGHWAY. A STANDARD DISK STAMPED D-154 RESET 1950 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  • The NAVD 88 height was computed by applying the VERTCON shift value to the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.) The vertical order pertains to the superseded datum.
  • The geoid height was determined by GEOID99.

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