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Details for Benchmark: AW2198

N 29° 57.783 W 095° 54.433 (NAD 83)

Altitude: 213.1

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

Location:
In WALLER county, TX View Original Datasheet
Designation:
H 1026
Marker Type:
bench mark disk
Setting:
set into the top of a round concrete monument
Stability:
May hold, but of type commonly subject to surface motion.

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Recovered as described in good condition.

[Photos:]
photoAW2198
photoAW2198 setting
photoAW2198 setting

Found as described in good condition.

[Photos:]
photoDisk Closeup
photoDisk Area

Documented History (by the NGS)

01/01/1954 by CGS (MONUMENTED)
DESCRIBED BY COAST AND GEODETIC SURVEY 1954 7.15 MI S FROM WALLER. 1.15 MILES EAST ALONG U.S. HIGHWAY 290 FROM THE TEXAS AND NEW ORLEANS RAILROAD STATION AT WALLER, THENCE 6.0 MILES SOUTH ALONG MATHIS ROAD, ON THE OUTSIDE OF A CURVE IN THE ROAD, 45 FEET SOUTHEAST OF THE CENTER LINE OF MATHIS ROAD, 0.1 MILE SOUTH OF A FARMHOUSE, 1 FOOT WEST OF A FENCE, 2 FEET SOUTH OF A WITNESS POST, SET IN THE TOP OF A CONCRETE POST WHICH PROJECTS 0.6 FOOT ABOVE THE GROUND.
01/01/1978 by NGS (GOOD)
RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1978 RECOVERED IN GOOD CONDITION.

Control Text

  • The horizontal coordinates were scaled from a topographic map and have an estimated accuracy of +/- 6 seconds.
  • The NAVD 88 height was computed by applying the VERTCON shift value to the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.) The vertical order pertains to the superseded datum.
  • The geoid height was determined by GEOID99.

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