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Details for Benchmark: AW0135

N 29° 47.167 W 095° 48.900 (NAD 83)

Altitude: 141.44

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

Location:
In HARRIS county, TX View Original Datasheet
Designation:
Y 1148
Marker Type:
bench mark disk
Setting:
copper-clad steel rod
Stability:
Probably hold position/elevation well.

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N 29° 47.191 W 095° 48.926

The last time it got recovered was back in mid-2007 (and with no updated coords), so it was high time to see if it was still there... yep, it's still is! It was completely covered under grass and probably not spotted for years, but after some poking with a hiking stick I struck gold.

Recovered in good condition; I hope the nearby brewery owners don't mind that I trimmed the area a bit so that the BM doesn't "disappear" once again. I'm posting updated coords just in case.

[Photos:]
photoAW0135 - Y 1148 - 1
photoAW0135 - Y 1148 - 2
photoAW0135 - Y 1148 - 3

Recovered as described in good condition.

[Photos:]
photoAW0135
photoAW0135 setting

Found as described in good condition.

[Photos:]
photoAW0135 Disk
photoAW0135 Area

Documented History (by the NGS)

01/01/1959 by CGS (MONUMENTED)
01/01/1973 by NGS (GOOD)
DESCRIBED BY NATIONAL GEODETIC SURVEY 1973 0.3 MI E FROM KATY. ABOUT 0.3 MILE EAST ALONG THE MISSOURI-KANSAS-TEXAS RAILROAD FROM THE STATION AT KATY, ABOUT 5.2 FEET SOUTHWEST OF THE SOUTHEAST CORNER OF THE AMERICAN RICE GROWERS CO-OP ASSOCIATION OFFICE BUILDING, 167.6 FEET NORTH OF THE NORTH RAIL OF THE MAIN TRACK, 13.5 FEET EAST OF THE CENTER LINE OF THE ENTRANCE TO THE BUILDING, 3.6 FEET SOUTH OF THE SOUTH FACE OF THE BUILDING, AND IS A DISK SET ON THE TOP OF A 5/8-INCH COPPER COATED STEEL ROD AND PROTECTED BY A 6-INCH TILE WHICH PROJECTS 0.2 FOOT BELOW THE LEVEL OF THE GROUND. THE ROD WAS DRIVEN TO A DEPTH OF 40 FEET.
01/01/1976 by NGS (GOOD)
RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1976 RECOVERED IN GOOD CONDITION.
01/01/1976 by NGS (GOOD)
RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1976 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. A NEW TO REACH FOLLOWS. 0.5 KM (0.3 MI) EAST ALONG THE MISSOURI KANSAS TEXAS RAILROAD FROM ITS JUNCTION WITH AVENUE A IN KATY, ALSO ADD 60 METERS (200 FT) NORTH OF THE NORTH RAIL OF THE RAILROAD.
01/01/1987 by USPSQD (GOOD)
RECOVERY NOTE BY US POWER SQUADRON 1987 (BB) RECOVERED IN GOOD CONDITION.
01/01/1990 by USPSQD (GOOD)
RECOVERY NOTE BY US POWER SQUADRON 1990 (WHA) RECOVERED IN GOOD CONDITION.
06/25/1994 by USPSQD (GOOD)
RECOVERY NOTE BY US POWER SQUADRON 1994 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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