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Details for Benchmark: GJ0237

N 36° 26.167 W 099° 23.583 (NAD 83)

Altitude: 1909

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

Location:
In WOODWARD county, OK View Original Datasheet
Designation:
1908.2 USWB
Marker Type:
bench mark disk
Setting:
light structures
Stability:
Mark of questionable or unknown stability.

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found

Located the disk from the datasheet description.

[Photos:]
photoGJ0237 1908.2 USWB UNK
The first US Weather Bureau Benchmark I have located. Interesting.
photo1908.2 USWB
On top of the concrete block to the right of the first step at the sidewalk.

found today............

cool great condition

Found as described in good condition. An unusual U.S. Weather Bureau disk. Was under the flower pot!

[Photos:]
photoGJ0237 1908.2 USWB
photoAREA VIEW

Found it....been after this one for a while.

This was a fun find!

[Photos:]
photobenchmark disk

Found while in the area of the Selman Bat Watch.

[Photos:]
photoGJ0237-1
photoGJ0237-2
photoGJ0237

Documented History (by the NGS)

Unknown by CGS (MONUMENTED)
01/01/1939 by NGS (GOOD)
DESCRIBED BY NATIONAL GEODETIC SURVEY 1939 AT WOODWARD. AT WOODWARD, WOODWARD COUNTY, ON MAIN STREET, AT THE POST OFFICE, 49 FEET SOUTHEAST OF THE SOUTH PUBLIC ENTRANCE, IN THE TOP OF THE EAST CONCRETE PEDESTAL OF THE STEPS LEADING TO THE POST OFFICE, AND ABOUT 2 FEET HIGHER THAN THE SIDEWALK. A UNITED STATES WEATHER BUREAU STANDARD DISK.

Control Text

  • The horizontal coordinates were scaled from a topographic map and have an estimated accuracy of +/- 6 seconds.
  • The orthometric height was determined by differential leveling and adjusted by the National Geodetic Survey in June 1991.
  • The geoid height was determined by GEOID99.
  • The dynamic height is computed by dividing the NAVD 88 geopotential number by the normal gravity value computed on the Geodetic Reference System of 1980 (GRS 80) ellipsoid at 45 degrees latitude (G = 980.6199 gals.).
  • The modeled gravity was interpolated from observed gravity values.

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