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Details for Benchmark: KK0176

N 39° 08.950 W 104° 53.117 (NAD 83)

Altitude: 7083.32

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

Location:
In DOUGLAS county, CO View Original Datasheet
Designation:
M 354
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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Found while driving into Palmer Lake.

Out to find a few benchmarks north of Palmer Lake today.

Spotted the concrete post for this one as I drove up. Brushed off the snow and took some pictures, all is good at the mark.

[Photos:]
photoKK0176 M 354 Closeup
photoM 354 Eye Level View
photoM 354 & Milepost 50

BM in good shape

[Photos:]
photoKK0176
photoKK0176 w/ GPS

Found while on a short hike

We found it today...

[Photos:]
photoKK0176

Found in great shape.

Used for survey work. Good shape.

found in fine shape.

Found as described in good condition.

[Photos:]
photoKK0176 M 354
N 39° 08.847 W 104° 53.279

The witness post is knocked over, but still findable.

Documented History (by the NGS)

01/01/1954 by CGS (MONUMENTED)
DESCRIBED BY COAST AND GEODETIC SURVEY 1954 1.9 MI N FROM PALMER LAKE. 1.9 MILES NORTH ALONG THE DENVER AND RIO GRANDE WESTERN RAILROAD FROM THE ATCHISON, TOPEKA AND SANTA FE RAILROAD STATION AT PALMER LAKE, 0.2 MILE SOUTH OF AN ABANDONED ATCHISON, TOPEKA AND SANTA FE RAILROAD BRIDGE, 22 FEET NORTHWEST OF MILEPOST 50, 34.4 FEET WEST OF THE WEST RAIL, 7 FEET NORTH OF A TELEPHONE POLE, 2.4 FEET SOUTH OF A WITNESS POST, SET IN THE TOP OF A CONCRETE POST WHICH PROJECTS 0.4 FOOT ABOVE THE GROUND.

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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