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Details for Benchmark: KK0283

N 39° 04.217 W 104° 39.167 (NAD 83)

Altitude: 7499.43

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

Location:
In EL PASO county, CO View Original Datasheet
Designation:
A 295
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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Stopped to check on this one while out on a quiet Sunday cache/benchmark run. All is well.

Found in good condition.

Found while caching through the area.

We found the witness post right away using Spivey's coords. It took a while to find the actual mark under all the grass.

[Photos:]
photoKK0283

Found it but boy the grass made it a bit tough.

Found this one, although we had to root around through the dead grass to find it.

[Photos:]
photoKK0283

Yes sir, I found it. (coords: N39 04.233 W104 39.205)

[Photos:]
photoKK0283

Got it!

Found it no problem.

Found in good cond.

[Photos:]
photoKK0283 1952
photoUp close

Documented History (by the NGS)

01/01/1952 by CGS (MONUMENTED)
DESCRIBED BY COAST AND GEODETIC SURVEY 1952 5.5 MI W FROM EASTONVILLE. 5.5 MILES WEST ALONG STATE HIGHWAY 50 FROM THE GRADE SCHOOL AT EASTONVILLE, 34 FEET SOUTH OF THE CENTER LINE OF THE HIGHWAY, 1 FOOT NORTH OF A FENCE, 3 FEET WEST OF A WITNESS POST, SET IN THE TOP OF A CONCRETE POST WHICH PROJECTS 0.7 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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