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Details for Benchmark: TQ0442

N 48° 15.036 W 120° 00.132 (NAD 83)

Altitude: 5029

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

Location:
In OKANOGAN county, WA View Original Datasheet
Designation:
LEECHER 2
Marker Type:
triangulation station disk
Setting:
in rock outcrop
Stability:
Most reliable and expected to hold position/elevation well.

Reference Points

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with Craig W

The mark is in good condition.

[Photos:]
photoLEECHER2 Triangulation Station

Recovered benchmark and reference marks as described. See TQ0444 1925 description for photos.

Marvin Gardens

Documented History (by the NGS)

01/01/1950 by CGS (MONUMENTED)
DESCRIBED BY COAST AND GEODETIC SURVEY 1950 (WRH) FOR DESCRIPTION SEE RECOVERY NOTE FOR LEECHER 1925.
01/01/1956 by USGS (GOOD)
RECOVERY NOTE BY US GEOLOGICAL SURVEY 1956 RECOVERED AS DESCRIBED. ALL MARKS IN GOOD CONDITION. RMS NOT MEASURED. NOTE--NGS DESCRIPTION MENTIONS A LOH AND STEEL LOT WHICH ARE NO LONGER IN EXISTENCE. A NEW STANDARD 14 X 14-FT LOH ON A 50-FT TOWER NOW STANDS CENTERED OVER STATION MARK. TOP OF LOT IS 55.2 FT, EAVES ARE 49.2, AND FLOOR IS 41.0 FT ABOVE STATION MARK.
01/01/1962 by USGS (GOOD)
RECOVERY NOTE BY US GEOLOGICAL SURVEY 1962 RECOVERED AS DESCRIBED. ALL MARKS IN GOOD CONDITION. RMS NOT MEASURED.
01/01/1968 by USGS (GOOD)
RECOVERY NOTE BY US GEOLOGICAL SURVEY 1968 RECOVERED AS DESCRIBED. ALL MARKS IN GOOD CONDITION. RMS NOT MEASURED. NEW TO REACH FOLLOWS--TO REACH FROM POST OFFICE AT CARLTON, GO N. ON HWY. 4.6 MI TO BENTON CREEK JCT. TURN RIGHT ON BENTON CREEK RD. 9.1 MI. TURN RIGHT ONTO SMALL RD. 0.6 MI TO Y. GO RIGHT 0.4 MI TO RUSSIAN SPRINGS. TAKE RIGHT TURN AT Y AND CONTINUE 2.8 MI TO TOP OF LEECHER MTN. AND STATION MARK UNDER LOT. SIGNAL DATA--PEAK OF ROOF 55.4 FT, EAVES 50.0 FT AND CATWALK 41.2 FT ABOVE STATION MARK.
01/01/1969 by USGS (GOOD)
RECOVERY NOTE BY US GEOLOGICAL SURVEY 1969 RECOVERED AS RE-DESCRIBED. ALL MARKS IN GOOD CONDITION. RMS NOT MEASURED.

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  • The NAVD 88 height was computed by applying the VERTCON shift value to the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.)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

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