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Details for Benchmark: AW4733

N 29° 34.460 W 095° 46.524 (NAD 83)

Altitude: 99.9

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

Location:
In FORT BEND county, TX View Original Datasheet
Designation:
E 1212
Marker Type:
bench mark disk
Setting:
footings/foundation walls of small/medium structures
Stability:
May hold, but of type commonly subject to surface motion.

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Working in the area and needed a few GPS points

Recovered as described in good condition.

[Photos:]
photoAW4733
photoAW4733 setting

Documented History (by the NGS)

01/01/1973 by NGS (MONUMENTED)
DESCRIBED BY NATIONAL GEODETIC SURVEY 1973 1.0 MI SW FROM RICHMOND. 0.85 MILE SOUTHWEST ALONG U.S. HIGHWAY 90 ALT. FROM THE COUNTY COURTHOUSE AT RICHMOND, THENCE 0.15 MILE WEST ALONG OLD RICHMOND ROAD, 0.15 MILE WEST OF THE SANTA FE RAILWAY OVERPASS OVER U.S. HIGHWAY 90 ALT. 0.4 MILE NORTHEAST OF THE JUNCTION OF HARD CASTLE STREET, AT THE CROSSING OF A STEEL TOWER POWER TRANSMISSION LINE, IN THE TOP OF THE CONCRETE FOUNDATION OF THE NORTHWEST LEG OF THE THIRD TOWER WEST OF THE OVERPASS, 47 FEET SOUTHEAST OF THE CENTER LINE OF THE ROAD, 0.5 FOOT NORTHWEST OF THE STEEL LEG, AND ABOUT 1 FOOT HIGHER THAN THE ROAD.
01/01/1987 by USPSQD (GOOD)
RECOVERY NOTE BY US POWER SQUADRON 1987 (LT) RECOVERED IN GOOD CONDITION.
01/01/1987 by NGS (GOOD)
RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1987 RECOVERED IN GOOD CONDITION.
01/01/1990 by USPSQD (GOOD)
RECOVERY NOTE BY US POWER SQUADRON 1990 (MVM) RECOVERED IN GOOD CONDITION.
01/01/1990 by USPSQD (GOOD)
RECOVERY NOTE BY US POWER SQUADRON 1990 (DB) RECOVERED IN GOOD CONDITION.
12/04/1993 by USPSQD (GOOD)
RECOVERY NOTE BY US POWER SQUADRON 1993 RECOVERED IN GOOD CONDITION.
04/20/1995 by HGCSD (GOOD)
RECOVERY NOTE BY HARRIS-GALV CO DIST 1995 (JCH) RECOVERED AS DESCRIBED.

Control Text

  • The horizontal coordinates were established by GPS observations and adjusted by the National Geodetic Survey in October 1996.
  • The orthometric height was determined by GPS observations and a high-resolution geoid model using precise GPS observation and processing techniques.
  • The X, Y, and Z were computed from the position and the ellipsoidal ht.
  • The Laplace correction was computed from DEFLEC99 derived deflections.
  • The ellipsoidal height was determined by GPS observations and is referenced to NAD 83.
  • The geoid height was determined by GEOID99.

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