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Details for Benchmark: DN0621

N 33° 05.367 W 097° 17.633 (NAD 83)

Altitude: 643.86

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

Location:
In DENTON county, TX View Original Datasheet
Designation:
JUSTIN
Marker Type:
NGS Benchmark
Setting:
setting not listed - see description
Stability:
Mark of questionable or unknown stability.

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Documented History (by the NGS)

Unknown by ATSFRR (MONUMENTED)
01/01/1934 by NGS (GOOD)
DESCRIBED BY NATIONAL GEODETIC SURVEY 1934 IN JUSTIN. IN THE CORNER OF THE DOOR SILL OF THE WHITE WAITING ROOM DEPOT. GULF COLORADO AND SANTA FE RAILWAY.
06/29/1995 by USPSQD (MARK NOT FOUND)
RECOVERY NOTE BY US POWER SQUADRON 1995 MARK NOT FOUND.
02/14/1998 by USPSQD (MARK NOT FOUND)
RECOVERY NOTE BY US POWER SQUADRON 1998 MARK NOT FOUND.

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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