Details for Benchmark: AW2166
N 29° 45.183 W 095° 50.117 (NAD 83)
Coordinates may not be exact. Altitude is ADJUSTED and location is SCALED. (more info)
- In FORT BEND county, TX View Original Datasheet
- C 806 X
- Marker Type:
- bench mark disk
- set into the top of a round concrete monument
- May hold, but of type commonly subject to surface motion.
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Documented History (by the NGS)
|01/01/1943 by CGS (MONUMENTED)
|01/01/1973 by NGS (GOOD)
|DESCRIBED BY NATIONAL GEODETIC SURVEY 1973
2.75 MI S FROM KATY. 2.75 MILES SOUTH ALONG PIN OAK ROAD FROM THE MISSOURI, KANSAS-TEXAS RAILROAD STATION AT KATY, 0.15 MILE SOUTHWEST OF THE JUNCTION OF GASTON ROAD SOUTHEAST, 3 POWER POLES NORTHEAST OF A POWER POLE BEARING A TRANSFORMER, 35 1/2 FEET NORTHWEST OF THE CENTER LINE OF THE ROAD, 4 1/2 FEET NORTHWEST OF POWER POLE 333, 5.0 FEET SOUTHEAST OF A FENCE, 1.4 FEET NORTHEAST OF A WITNESS POST, ABOUT LEVEL WITH THE ROAD, AND SET IN THE TOP OF A CONCRETE POST PROJECTING 0.1 FOOT ABOVE THE GROUND.
|01/01/1978 by NGS (GOOD)
|RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1978
RECOVERED IN GOOD CONDITION.
|01/01/1986 by NGS (GOOD)
|RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1986
RECOVERED IN GOOD CONDITION EXCEPT THE STAMPING IS C 806 X 1943.
|06/25/1994 by USPSQD (MARK NOT FOUND)
|RECOVERY NOTE BY US POWER SQUADRON 1994
MARK NOT FOUND.
- 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.