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Details for Benchmark: SB1358

N 46° 17.005 W 121° 53.659 (NAD 83)

Altitude: 5668

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

Location:
In SKAMANIA county, WA View Original Datasheet
Designation:
BADGER LO RM
Marker Type:
NGS Benchmark
Setting:
setting not listed - see description
Stability:
Most reliable and expected to hold position/elevation well.

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Documented History (by the NGS)

Unknown by (MONUMENTED)
01/01/1964 by USGS (GOOD)
DESCRIBED BY US GEOLOGICAL SURVEY 1964 RECOVERED AS DESCRIBED. NEW DESCRIPTION FOLLOWS. LOCATED ABOUT 11 MI S. OF CISPUS RIVER, ABOUT 11 MI E. OF SPIRIT LAKE, ABOUT 3 MI SE. OF MOSQUITO MEADOWS, ABOUT 0.3 MI SE. OF BADGER LAKE. ON SUMMIT OF BADGER PEAK. REACHED BY HELICOPTER. STATION MARK--USFS DISK STAMPED---BADGER LO RM 1937---, CEMENTED IN DRILL HOLE IN ROCK OUTCROP. RM 1--STANDARD RM TABLET STAMPED---RM NO 1 1964---, IN ROCK. RM 2--STANDARD RM TABLET STAMPED---RM NO 2 1964---, IN ROCK.

Control Text

  • The horizontal coordinates were established by classical geodetic methods and adjusted by the National Geodetic Survey in April 1994.
  • The NAVD 88 height was computed by applying the VERTCON shift value to the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)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.