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Details for Benchmark: AW0202

N 29° 43.050 W 095° 20.733 (NAD 83)

Altitude: 36.32

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

Location:
In HARRIS county, TX View Original Datasheet
Designation:
5455 1014
Marker Type:
survey disk
Setting:
mat foundation, concrete slab, etc.
Stability:
May hold, but of type commonly subject to surface motion.

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Couldn't find it...maybe curbing has been re-done...?

Found mark in good condition exactly as described. Mark is north of intersection of Rockwood Dr with Wheeler St, set in NW corner of the top of a concrete catch basin. My coordinates differ from published ones, but those are SCALED.

[This entry was edited by Chunkymonkey on Monday, December 20, 2004 at 6:48:19 AM.]

[Photos:]
photo5455 1014 survey disk
Coordinates on my GPSr are different from the published ones, as those are SCALED. Disk shows identification mark 5455 1014.
photo5455 1014 survey disk location
Photo from the south with the box drawn around disk location on the catch basin top.

Documented History (by the NGS)

Unknown by TX3280 (MONUMENTED)
01/01/1973 by NGS (GOOD)
DESCRIBED BY NATIONAL GEODETIC SURVEY 1973 IN HOUSTON. AT HOUSTON, AT THE T JUNCTION OF WHEELER STREET AND ROCKWOOD DRIVE, IN LINE WITH THE EXTENDED CENTER LINE OF THE DRIVE, SET IN THE TOP AND 0.5 FOOT NORTH OF THE NORTH CURB OF THE STREET IN THE NORTHWEST CORNER OF A CONCRETE CATCH BASIN, 19.0 FEET NORTH OF THE CENTER LINE OF THE STREET, AND ABOUT LEVEL WITH THE STREET.
01/01/1978 by NGS (GOOD)
RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1978 RECOVERED IN GOOD CONDITION.
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.

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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