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Details for Benchmark: MO1277

N 41° 05.835 W 105° 58.600 (NAD 83)

Altitude: 9664

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

Location:
In ALBANY county, WY View Original Datasheet
Designation:
JELM
Marker Type:
triangulation station disk
Setting:
in rock outcrop
Stability:

Must Read!

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Searched for this during an evening drive to the top of Jelm. The station, RM1, and RM2 were recovered as described, in good condition. Azimuth marker was not searched for at this time.

[Photos:]
photoJELM Station Mark
photoJELM RM 1
photoJELM RM 2

Stumble on this one. Didn't now about #2 will look for it when I go back.

RM1 only, missed the triangulation station mark.

Found with Riskebznes

Found these before but this is the first I've logged.

Found both the NO 1 and NO 2 benchmarks easily - both are in good condition - see the pictures.

[Photos:]
photoBenchmark No 2
photoBenchmark No 1
photoThe view from the benchmarks with Sue and Jay
photoView from the benchmarks looking South

Documented History (by the NGS)

01/01/1948 by CGS (MONUMENTED)
DESCRIBED BY COAST AND GEODETIC SURVEY 1948 (DHK) STATION LOCATED ON A LONE, PROMINENT, SHARP PEAK, WITH TIMBER ON ALL SIDES NEAR TOP, ABOUT 25 MILES AIRLINE SOUTHWEST OF LARAMIE, 7 MILES AIRLINE NORTH OF THE COLORADO-WYOMING STATE LINE, 100 FEET EAST OF LOOKOUT HOUSE, 13 PACES NORTH-NORTHWEST OF ROAD, 5 PACES EAST-SOUTHEAST OF A 3 INCH PINE TREE WITH A TRIANGLE BLAZE ON IT, 3 PACES EAST OF A WHITE WITNESS POST, SET FLUSH, AND STAMPED, JELM 1948. REFERENCE MARK NO. 1 IS ABOUT 6 INCHES LOWER THAN STATION, 2 PACES NORTH OF ROAD, PROJECTS 10 INCHES, AND STAMPED, JELM NO 1 1948. REFERENCE MARK NO. 2 IS ABOUT 6 INCHES HIGHER THAN STATION, PROJECTS 12 INCHES, AND STAMPED, JELM NO 2 1948. AZIMUTH MARK IS LOCATED ON THE WEST SLOPE OF A PROMINENT KNOLL NORTH OF STATION, 3 FEET WEST OF WHITE WITNESS POST, PROJECTS 12 INCHES, AND STAMPED, JELM 1948. TO REACH FROM TEXACO SERVICE STATION IN WOODS LANDING, WHICH IS ABOUT 27 MILES SOUTHWEST OF LARAMIE ON STATE HIGHWAY 230, GO EAST ACROSS WOODEN BRIDGE, THENCE SOUTH ON GRADED ROAD FOR 3.3 MILES TO A SIDE ROAD LEFT. TURN LEFT, EAST, AND GO 1.55 MILE TO FORK. TAKE LEFT FORK, NORTH, AND GO 3.9 MILES TO TOP OF MOUNTAIN AND STATION AS DESCRIBED ABOVE. A DRIVE STATION, WITH AN EXTRA LOW GEARED TRUCK. TO REACH AZIMUTH MARK FROM STATION, GO DOWN ROAD FOR ABOUT 0.1 MILE. LEAVE TRUCK, AND PACK NORTHERLY THROUGH SADDLE TOWARD KNOLL TO WITHIN ABOUT FIFTY FEET OF TOP. MARK IS AT THIS POINT AS DESCRIBED ABOVE.
01/01/1959 by USGS (GOOD)
RECOVERY NOTE BY US GEOLOGICAL SURVEY 1959 RECOVERED IN GOOD CONDITION.
01/01/1963 by CGS (GOOD)
RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1963 (LBO) ORIGIONAL DESCRIPTION SEE. BOOK NO. 978. PAGE 18. STATION AND REFERENCE MARKS WERE RECOVERED AND FOUND IN GOOD CONDITION. THE STATION IS ABOUT 1 MILE S AND ABOUT 2 MILES E OF WOODS LANDING, NEAR THE W CENTER OF SEC. 18, T 13 N, R 76 W, ON THE HIGHEST POINT OF JELM MOUNTAIN. THE AZIMUTH MARK WAS NOT SEARCHED FOR AT THIS TIME. THE ORIGIONAL DESCRIPTION TO REACH IS ENTIRELY ADEQUATE. THERE IS A GOOD ROAD TO THE STATION.

Control Text

  • The horizontal coordinates were established by classical geodetic methods and adjusted by the National Geodetic Survey in January 1997.
  • The NAVD 88 height was computed by applying the VERTCON shift value to the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)
  • The Laplace correction was computed from DEFLEC99 derived deflections.
  • The geoid height was determined by GEOID99.