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Details for Benchmark: AW5472

N 29° 23.467 W 095° 43.983 (NAD 83)

Altitude: 72.53

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

Location:
In FORT BEND county, TX View Original Datasheet
Designation:
J 1505
Marker Type:
metal rod
Setting:
stainless steel rod
Stability:
Probably hold position/elevation well.

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Recovered as described in good condition.

[This entry was edited by Doc Geo on Monday, June 04, 2007 at 8:24:15 AM.]

[Photos:]
photoAW5472
photoAW5472 setting

Documented History (by the NGS)

01/01/1987 by NGS (MONUMENTED)
DESCRIBED BY NATIONAL GEODETIC SURVEY 1987 6.3 KM (3.9 MI) NE FROM GUY. 6.3 KM (3.9 MI) NORTHEAST ALONG FM ROAD 1994 FROM THE JUNCTION OF STATE HIGHWAY 36 IN GUY, AT THE JUNCTION OF FM ROAD 361, AT THE CROSSING OF A RAILROAD, 23.9 METERS (78.5 FT) SOUTHEAST OF THE CENTERLINE OF FM ROAD 1994, 14.6 METERS (48.0 FT) NORTHEAST OF THE CENTERLINE OF THE SAME FM ROAD 1994, 11.0 METERS (36.0 FT) WEST OF THE WEST LEG OF A STEEL TOWER FOR A HIGH VOLTAGE POWER LINE, 5.3 METERS (17.5 FT) NORTHEAST OF THE NORTHWEST END OF AN 18-INCH CONCRETE PIPE CULVERT, 1.6 METERS (5.5 FT) NORTHWEST OF THE NORTHWEST POST OF A GATE, 0.5 METER (1.5 FT) SOUTHWEST OF A FENCE. NOTE--ACCESS TO DATUM POINT IS HAD THROUGH A 5-INCH LOGO CAP. THE MARK IS 0.3 METERS SE FROM A WITNESS POST THE MARK IS ABOVE LEVEL WITH THE ROAD.
01/01/1988 by USPSQD (GOOD)
RECOVERY NOTE BY US POWER SQUADRON 1988 (DLL) RECOVERED IN GOOD CONDITION.
06/22/1996 by USPSQD (MARK NOT FOUND)
RECOVERY NOTE BY US POWER SQUADRON 1996 MARK NOT FOUND.
01/03/1998 by USPSQD (GOOD)
RECOVERY NOTE BY US POWER SQUADRON 1998 RECOVERED IN GOOD CONDITION.
11/21/1998 by USPSQD (GOOD)
RECOVERY NOTE BY US POWER SQUADRON 1998 RECOVERED IN GOOD CONDITION.

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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