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Details for Benchmark: QZ0626

N 45° 49.785 W 114° 30.693 (NAD 83)

Altitude: 8784

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

Location:
In IDAHO county, ID View Original Datasheet
Designation:
WATCHTOWER 2
Marker Type:
NGS Benchmark
Setting:
setting not listed - see description
Stability:

Reference Points

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Documented History (by the NGS)

01/01/1958 by USFS (MONUMENTED)
01/01/1965 by USGS (SEE DESCRIPTION)
DESCRIBED BY US GEOLOGICAL SURVEY 1965 LOCATED ON THE CREST OF THE BITTERROOT RANGE (THE IDAHO-MONTANA BOUNDARY), SEPARATING WATCHTOWER CREEK TO THE SOUTHEAST AND COOPER CREEK TO THE NW., IN THE SW 1/4 SEC. 18, T. 1N., R. 23W. STATION REACHED BY HELICOPTER. TO REACH FROM WEST FORK RANGER STATION, FOLLOW RD. W. UP NEZPERCE FORK FOR 14.5 MI. TO WATCHTOWER CREEK, THEN TAKE TRAIL FOR APPROXIMATELY 9 MI. TO TOP OF DIVIDE, AND FOLLOW THE DIVIDE NORTHEASTERLY FOR 2 MI. TO THE HIGHEST POINT OF THE ROCKY PEAK AND STATION. THIS SITE WAS OCCUPIED AND A BRONZE TABLET WAS SET, SURMOUNTED BY A 7 FT. CAIRN, BY THE USFS IN 1926. THE 1958 SURVEY PARTY TORE THE CAIRN APART BUT WAS UNABLE TO LOCATE THE TABLET. STATION MARK--STANDARD USFS BRASS CAP STAMPED---WATCHTOWER 1958---, SET IN ROCK AT THE APPROXIMATE CENTER OF THE CAIRN. NO REFERENCE MARKS WERE SET.

Control Text

  • The horizontal coordinates were established by classical geodetic methods and adjusted by the National Geodetic Survey in July 1992.
  • The NAVD 88 height was computed by applying the VERTCON shift value to the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)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.

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