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Details for Benchmark: TQ0534

N 48° 55.697 W 121° 52.971 (NAD 83)

Altitude: 6319.7

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

Location:
In WHATCOM county, WA View Original Datasheet
Designation:
CHURCH
Marker Type:
survey disk
Setting:
in rock outcrop
Stability:
Most reliable and expected to hold position/elevation well.

Reference Points

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Documented History (by the NGS)

01/01/1925 by CGS (MONUMENTED)
DESCRIBED BY COAST AND GEODETIC SURVEY 1925 ON THE HIGHEST POINT ON THE WEST END OF CHURCH MOUNTAIN, A WELL - KNOWN MOUNTAIN ON THE NORTH SIDE OF THE NOOKSACK RIVER ABOUT 5 OR 6 MILES UPSTREAM FROM THE TOWN OF GLACIER, WASHINGTON. THERE IS A GOOD HIGHWAY UP THE RIVER AND THE STATION IS BEST APPROACHED FROM IT. STATION MARK--THE STATION MARK OF THE ORIGINAL STATION IS NOT RECORDED. THE STATION WAS REESTABLISHED IN 1925, BY THE US COAST AND GEODETIC SURVEY AT A POINT VERY CLOSE TO THE ORIGINAL STATION, BUT NO STATION MARK WAS RECOVERED. THE USC AND GS STATION MARK IS A STANDARD BRONZE - DISK STATION MARK WEDGED IN A DRILL HOLE IN OUTCROPPING BEDROCK. A STANDARD BRONZE - DISK REFERENCE MARK WEDGED IN A DRILL HOLE IN OUTCROPPING BEDROCK, WITH THE ARROW POINTING TOWARD THE STATION, IS 6.05 METERS IN BEARING 238 DEGREES 37 MINUTES FROM THE STATION. A SECOND STANDARD BRONZE - DISK REFERENCE MARK WEDGED IN A DRILL HOLE IN OUTCROPPING BEDROCK IS 1.88 METERS IN BEARING 350 DEGREES 30 MINUTES FROM THE STATION.
01/01/1935 by IBC (GOOD)
RECOVERY NOTE BY INTERNATIONAL BOUNDARY COMMISSION 1935 ON THE HIGHEST POINT ON THE WEST END OF CHURCH MOUNTAIN, A WELL-KNOWN MOUNTAIN ON THE NORTH SIDE OF THE NOOKSACK RIVER ABOUT 5 OR 6 MILES UPSTREAM FROM THE TOWN OF GLACIER, WASHINGTON. THERE IS A GOOD HIGHWAY UP THE RIVER AND THE STATION IS BEST APPROACHED FROM IT.
01/01/1939 by CGS (GOOD)
RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1939 (JN) ON THE HIGHEST POINT OF CHURCH MOUNTAIN NEAR GLACIER. THE DESCRIPTION IS CORRECT. IT IS BEST REACHED BY GOING UP THE TRAIL TO CHURCH MOUNTAIN LOOKOUT OF THE U.S. FOREST SERVICE. IF IT IS GOING TO BE OCCUPIED WHEN THE LOOKOUT IS NOT IN USE, IT WOULD BE BEST TO GET THE KEYS TO THE LOOKOUT SO IT CAN BE USED TO STAY IN. THE STATION IS ON A PEAK A LITTLE SOUTH OF THE LOOKOUT.
01/01/1939 by USGS (GOOD)
RECOVERY NOTE BY US GEOLOGICAL SURVEY 1939 RECOVERED AS DESCRIBED BY CGS.
01/01/1950 by USGS (GOOD)
RECOVERY NOTE BY US GEOLOGICAL SURVEY 1950 RECOVERED AS DESCRIBED BY USGS AND CGS. RMS AGREE WITH CGS.

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 vertical order pertains to the superseded datum.
  • The Laplace correction was computed from DEFLEC99 derived deflections.
  • The geoid height was determined by GEOID99.