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Details for Benchmark: SB1034

N 46° 30.075 W 121° 46.027 (NAD 83)

Altitude: 5181

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

Location:
In LEWIS county, WA View Original Datasheet
Designation:
5172=POMPEY
Marker Type:
NGS Benchmark
Setting:
setting not listed - see description
Stability:

Reference Points

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Found to be in good shape!

[Photos:]
photo

Documented History (by the NGS)

01/01/1946 by USGS (MONUMENTED)
DESCRIBED BY US GEOLOGICAL SURVEY 1946 (JTJ) THE STATION IS LOCATED ABOUT 9 MILES SOUTHWEST OF PACKWOOD, ABOUT 9 MILES EAST SOUTHEAST OF RANDLE ON A BALD ROCKY PEAK KNOWN AS POMPEY PEAK. THE MARK IS A STANDARD BRONZE GEOLOGICAL SURVEY DISK SET IN OUTCROP ON THE HIGHEST POINT OF THE HILL ABOUT 5 FEET WEST OF THE POMPEY LOOKOUT HOUSE OF THE COLUMBIA NATIONAL FOREST. STAMPED VA 5172. TO REACH FROM THE POST OFFICE IN PACKWOOD GO WEST ON STATE HIGHWAY NO 5 FOR 8.0 MILES TO A GRAVEL ROAD LEFT. TURN LEFT ONTO GRAVEL ROAD AND CONTINUE FOR 1.2 MILES TO A TRAIL AND SIGN ON THE LEFT POMPEY L O 5. AND END OF TRUCK TRAVEL. CONTINUE ON FOOT OR HORSE ON THE POMPEY TRAIL FOR 4 MILES TO A FORK, AND SIGN POMPEY L O 1/2 TAKE LEFT FORK AND CONTINUE FOR ABOUT 1/2 MILE TO LOOKOUT HOUSE AND STATION. REFERENCE MARK NO 1 IS A STANDARD BRONZE REFERENCE DISK SET IN OUTCROP 1 FOOT FROM EDGE OF RIM, 3 FEET NORTHWEST OF THE NORTHWEST CORNER OF LOOKOUT HOUSE PORCH, AND IS ABOUT 2 FEET LOWER THAN THE STATION. STAMPED POMPEY NO 1 1946. REFERENCE MARK NO 2 IS A STANDARD BRONZE REFERENCE DISK SET IN OUTCROP ON LEDGE WEST OF LOOKOUT, AND IS ABOUT 1 FOOT LOWER THAN THE STATION. STAMPED POMPEY NO 2 1946. PICTURE POINT IS THE NORTHWEST CORNER OF THE LOOKOUT HOUSE. STATION 13-50 BPR WILL SERVE AS AZIMUTH MARK.
01/01/1961 by USGS (GOOD)
RECOVERY NOTE BY US GEOLOGICAL SURVEY 1961 RECOVERED AS DESCRIBED. ALL MARKS IN GOOD CONDITION. LOH AND ALL OTHER BUILDINGS HAVE BURNED. REACHED BY HELICOPTER.
01/01/1964 by USGS (GOOD)
RECOVERY NOTE BY US GEOLOGICAL SURVEY 1964 RECOVERED AS DESCRIBED. RMS AGREE WITH NGS.

Control Text

  • The horizontal coordinates were established by classical geodetic methods and adjusted by the National Geodetic Survey in December 1991.
  • The NAVD 88 height was computed by applying the VERTCON shift value to the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)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.