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Details for Benchmark: HV1731

N 38° 53.417 W 077° 05.050 (NAD 83)

Altitude: 239.4

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

Location:
In ARLINGTON county, VA View Original Datasheet
Designation:
V 129 PBPP
Marker Type:
survey disk
Setting:
massive structures
Stability:
Probably hold position/elevation well.

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This BenchMark no longer exists along with HV4469 the old Arlington Co. Courthouse. The old Court House was blown up in the mid 1990's.

The old brick courthouse on which this benchmark was placed no longer exists. The location is now a parking lot with no brick walls.

Documented History (by the NGS)

Unknown by PBPP (MONUMENTED)
01/01/1931 by PBPP (GOOD)
DESCRIBED BY PUB BLDGS AND PARKS 1931 IN ARLINGTON. IN ARLINGTON COUNTY, ONE BLOCK SOUTH ALONG COURTHOUSE ROAD FROM WILSON BOULEVARD, AT THE INTERSECTION OF FIFTEENTH STREET NORTH, AT THE COURTHOUSE, IN THE NORTH BRICK WALL, 1.5 FEET WEST OF THE NORTHEAST CORNER, AND ABOUT 2-1/2 FEET ABOVE THE GROUND. A PUBLIC BUILDINGS AND PUBLIC PARKS STANDARD DISK, STAMPED V 129 AND SET VERTICALLY.
01/01/1961 by CGS (GOOD)
RECOVERY NOTE BY COAST AND GEODETIC SURVEY 1961 RECOVERED IN GOOD CONDITION.

Control Text

  • The horizontal coordinates were scaled from a topographic map and have an estimated accuracy of +/- 6 seconds.
  • The NAVD 88 height was computed by applying the VERTCON shift value to the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.) The vertical order pertains to the superseded datum.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 geoid height was determined by GEOID99.

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