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Details for Benchmark: PY1238

N 44° 15.973 W 110° 31.757 (NAD 83)

Altitude: 10313

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

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

Reference Points

Must Read!

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Worst Weather ascent of the year. Shalee, Tony, and I got a campsite down by heart lake, and the hiking was a little snowy to start but nice and dry towards the lake. Since it was clear at least the first 1000 feet, Tony and I decided to go for it. Towards the top was brutal and it was high winds coupled with 1-2 feet drifting snow with almost no visibility.

Since there was snow everywhere, the ref mark is all I could locate.

[Photos:]
photoSheridan BM

Documented History (by the NGS)

01/01/1950 by CGS (MONUMENTED)
DESCRIBED BY COAST AND GEODETIC SURVEY 1950 (EBL) THE STATION IS LOCATED AT THE SUMMIT OF MOUNT SHERIDAN, WHICH IS LOCATED ABOUT 12 MILES SOUTH-SOUTHEAST OF THUMB AND 2 MILES SOUTHWEST OF THE HEART RANGER STATION ON HEART LAKE. THE STATION MARK IS A STANDARD DISK SET IN A BOULDER FLUSH WITH THE GROUND AND STAMPED SHERIDAN 1950. REFERENCE MARK NO. 1 IS A STANDARD BRONZE DISK SET IN THE NORTH CORNER OF THE LOOKOUT HOUSE FOUNDATION, AND STAMPED SHERIDAN NO 1 1950. REFERENCE MARK NO. 2 IS A STANDARD BRONZE DISK SET IN A BOULDER, PROJECTS 18 INCHES, AND STAMPED SHERIDAN NO 2 1950. THE AZIMUTH MARK IS APPROXIMATELY 0.2 MILE NORTH-NORTHWEST OF THE STATION IN A CLEARING AT A LOWER ELEVATION THAN MOUNT SHERIDAN. THE MARK IS 30 FEET WEST OF A TRIANGLE-BLAZED 24-INCH PINE TREE AND 15 FEET EAST OF THE HORSE TRAIL LEADING TO THE SHERIDAN LOOKOUT HOUSE. STATION IS ABOUT A 4-HOUR BACK PACK BUT THERE IS A GOOD HORSE TRAIL LEADING TO THE LOOKOUT HOUSE AND STATION.
01/01/1955 by USGS (SEE DESCRIPTION)
RECOVERY NOTE BY US GEOLOGICAL SURVEY 1955 RECOVERED. STATION MARK--STANDARD USC AND GS DISK, SET IN A BOULDER FLUSH WITH GROUND, STAMPED ---SHERIDAN 1950---.

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  • The NAVD 88 height was computed by applying the VERTCON shift value to the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)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.