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Details for Benchmark: PY1266

N 44° 49.127 W 110° 51.345 (NAD 83)

Altitude: 10340

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

Location:
In PARK county, WY View Original Datasheet
Designation:
HOLMES
Marker Type:
NGS Benchmark
Setting:
setting not listed - see description
Stability:
Mark of questionable or unknown stability.

Reference Points

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Wasn't exactly looking for benchmarks but stumbled upon this one - Sjømann

As described in great shape.

[Photos:]
photoDSC_7186SM.jpg
Holmes 1950

Documented History (by the NGS)

01/01/1950 by CGS (MONUMENTED)
DESCRIBED BY COAST AND GEODETIC SURVEY 1950 (EBL) THE STATION IS LOCATED ABOUT 13 MILES SOUTHWEST OF MAMMOTH HOT SPRINGS, WYOMING. 16 MILES NORTHEAST OF WEST YELLOWSTONE, MONTANA. 41 FEET SOUTHWEST OF THE SOUTHWEST CORNER OF MT. HOLMES LOOKOUT HOUSE. 14 FEET SOUTH OF A TELEPHONE POLE. AND ON A PROMINENT MOUNTAIN KNOWN AS MT. HOLMES. THE DISK IS WELDED TO THE TOP OF A 3-INCH IRON SOIL PIPE, AND THE MARK PROJECTS 6 INCHES. THE DISK IS STAMPED HOLMES 1950. REFERENCE MARK NO. 1 IS A U.S. GEOLOGICAL SURVEY DISK SET IN BEDROCK. THE MARK IS 61 FEET WEST OF MT. HOLMES LOOKOUT HOUSE, AND 33 FEET NORTH OF A TELEPHONE POLE. THE MARK IS FLUSH WITH THE GROUND, AND THE DISK IS STAMPED MT HOLMES NO 1. REFERENCE MARK NO. 2 IS A U.S. GEOLOGICAL SURVEY DISK SET IN BEDROCK. THE MARK IS 84 FEET NORTH OF MT. HOLMES LOOKOUT HOUSE. THE MARK IS FLUSH WITH THE GROUND, AND THE DISK IS STAMPED MT HOLMES NO 2. THE AZIMUTH MARK IS A 15 MINUTE PACK FROM THE STATION. THE MARK PROJECTS 18 INCHES, AND THE DISK IS STAMPED HOLMES 1950. TO REACH THE STATION FROM MAMMOTH HOT SPRINGS, GO SOUTH ON MAIN ROAD TOWARDS OLD FAITHFUL FOR 10.7 MILES TO A SIGN APOLLANIARS SPRING ON THE LEFT. CONTINUE SOUTH FOR 0.25 MILE TO A SIDE ROAD RIGHT. TURN RIGHT AND GO 0.4 MILE TO A POLE CORRAL AND END OF TRUCK TRAVEL. FOLLOW THE HOWARD EATON TRAIL FOR ABOUT 10 MINUTES TO A FORK IN THE TRAIL. TAKE THE LEFT TRAIL (MT. HOLMES TRAIL) FOR ABOUT 30 MINUTES TO A FORK. TAKE THE RIGHT TRAIL (MT. HOLMES TRAIL) FOR ABOUT 3 HOURS TO MT. HOLMES LOOKOUT HOUSE AND THE STATION.
01/01/1955 by USGS (GOOD)
RECOVERY NOTE BY US GEOLOGICAL SURVEY 1955 RECOVERED. STATION MARK--STANDARD DISK, WELDED TO THE TOP OF A 3 IN. IRON SOIL PIPE PROJECTING 6 IN., AND STAMPED ---HOLMES 1950---.
01/01/1987 by NGS (GOOD)
RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1987 (MRM) THE STATION WAS RECOVERED AT THIS DATE. THE STATION WAS RECOVERED AS DESCRIBED IN 1950. THE STATION IS A STANDARD CGS DISK STAMPED---HOLMES 1950---, WELDED TO THE TOP OF A 3-INCH IRON PIPE PROJECTING 15 CM ABOVE GROUND. TI4100 GPS SURVEY FOR CRUSTAL MOTION IN YELLOWSTONE PARK AND HEBGEN LAKE AREAS OF WYOMING, MONTANA AND IDAHO, AUGUST - SEPTEMBER 1987. THIS STATION SUITABLE FOR GPS SURVEYS. DESCRIBED BY M.R. MATHWIG.

Control Text

  • The horizontal coordinates were established by GPS observations and adjusted by the National Geodetic Survey in May 1992.
  • 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.