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Details for Benchmark: AE8131

N 40° 34.557 W 105° 05.144 (NAD 83)

Altitude: 5006

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

Location:
In LARIMER county, CO View Original Datasheet
Designation:
CSU
Marker Type:
NGS Benchmark
Setting:
setting not listed - see description
Stability:
May hold, but of type commonly subject to surface motion.

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[Photos:]
photoCSU Benchmark

Found while out and about looking for artwork for a challenge geocache

Picked this one up as part of a Natural Resources assignment.

Nice orange arrow still pointing to it!

I found this one today without my GPS. I work in the LSC so I know the area well. Took a picture with my phone so it is low quality. I will bring a camera at some point and update the picture.

[Photos:]
photoCSU Benchmark

Walk by it nearly every day and finally took the time to log it...Thanks!!!

The last photographed disc is not correct; the stamping should be CSU 97, not CSU 2002. It looks like the disk has been replaced.

Yep. Coordinates were very good. This is a very well kept benchmark.

[Photos:]
photoAE8131.JPG

The construction is now complete, to the detriment of the benchmark. Could not locate it with the coordinates or with the description from the NGS. The area described has been recently sodded and there are flower beds with mulch so I think the marker has likely been covered?

Ratestes and Marmot

It's not fenced anymore. It was still marked by orange angle iron. And the coordinates in my GPS took me right to it for a change!

N 40° 34.558 W 105° 05.146

The benchmark is currently fenced off, due to construction in the area. I got about 5' west of it, and it was clearly marked with four stakes, each marked SAVE.

Documented History (by the NGS)

01/01/1997 by CO-069 (MONUMENTED)
DESCRIBED BY LARIMER COUNTY COLORADO 1997 (RSC) THE STATION IS LOCATED THE THE CITY OF FORT COLLINS, IN THE NORTHEAST 1/4 OF SECTION 14, T 7 N, R 69 W. OWNERSHIP--COLORADO STATE UNIVERSITY PROPERTY TO REACH THE STATION FROM THE INTERSECTION OF SHIELDS STREET AND NORTH DRIVE GOING EAST AND PLUM STREET GOING WEST, GO EAST ON NORTH DRIVE, INTO THE CAMPUS OF COLORADO STATE UNIVERSITY FOR 0.4 MI (0.6 KM) TO THE STATION ON THE RIGHT, JUST SOUTH OF THE UNIVERSITY WEATHER STATION AND NORTHWEST OF THE LORY STUDENT CENTER THE MARK IS A STANDARD LARIMER COUNTY GEODETIC CONTROL BRASS DISK SET IN THE TOP OF A ROUND 40 CM CONCRETE POST, FLUSH WITH THE GROUND. IT IS 48.6 M (159.4 FT) SOUTH FROM THE CENTER OF NORTH DRIVE, 32.7 M (107.3 FT) SOUTH-SOUTHEAST FROM THE SOUTH LEG OF THE WEATHER STATION ANTENNA TOWER, 26.9 M (88.3 FT) SOUTHEAST FROM THE SOUTHEAST CORNER OF THE WEATHER BUILDING, 26.1 M (85.6 FT) SOUTH FROM A WITNESS POST AND CHAINLINK FENCE, 7.6 M (24.9 FT) EAST FROM THE CENTER OF THE SERVICE ROAD INTO LORY STUDENT CENTER AND 1.8 M (5.9 FT) SOUTHWEST FROM THE WESTERN EDGE OF THE SIDEWALK.

Control Text

  • The horizontal coordinates were established by GPS observations and adjusted by the National Geodetic Survey in March 1998.
  • The orthometric height was determined by GPS observations and a high-resolution geoid model.
  • The X, Y, and Z were computed from the position and the ellipsoidal ht.
  • The Laplace correction was computed from DEFLEC99 derived deflections.
  • The ellipsoidal height was determined by GPS observations and is referenced to NAD 83.
  • The geoid height was determined by GEOID99.

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