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Details for Benchmark: AX1080

N 29° 41.100 W 096° 58.117 (NAD 83)

Altitude: 347.1

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

Location:
In FAYETTE county, TX View Original Datasheet
Designation:
P 819
Marker Type:
bench mark disk
Setting:
light structures
Stability:
Mark of questionable or unknown stability.

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Recovered as described in good condition.

[Photos:]
photoAX1080 setting
photoAX1080

Documented History (by the NGS)

01/01/1943 by CGS (MONUMENTED)
DESCRIBED BY COAST AND GEODETIC SURVEY 1943 4.2 MI W FROM SCHULENBURG. TO REACH FROM THE CROSSING OF U.S. HIGHWAY NO. 90 AND U.S. HIGHWAY NO. 77 AT SCHULENBURG, PROCEED 4.2 MILES WESTERLY ALONG U.S. HIGHWAY NO. 90 TO A CONCRETE CULVERT AND SITE OF BENCH MARK. BENCH MARK IS SET HORIZONTALLY IN THE TOP OF THE WEST END OF THE NORTH HEADWALL OF A 7X9 FOOT CONCRETE BOX CULVERT UNDER THE HIGHWAY. IT IS 26.7 FEET NORTH OF AND ABOUT 2.0 FEET BELOW THE CENTERLINE OF THE HIGHWAY.
01/01/1970 by TXHD (GOOD)
RECOVERY NOTE BY TEXAS HIGHWAY DEPARTMENT 1970 RECOVERED IN GOOD CONDITION.
01/01/1987 by USPSQD (GOOD)
RECOVERY NOTE BY US POWER SQUADRON 1987 (WCJ) RECOVERED IN GOOD CONDITION.
01/01/1987 by USPSQD (GOOD)
RECOVERY NOTE BY US POWER SQUADRON 1987 (JCM) RECOVERED IN GOOD CONDITION.
01/01/1990 by USPSQD (GOOD)
RECOVERY NOTE BY US POWER SQUADRON 1990 (TWS) RECOVERED IN GOOD CONDITION.
06/08/1997 by USPSQD (GOOD)
RECOVERY NOTE BY US POWER SQUADRON 1997 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  • The NAVD 88 height was computed by applying the VERTCON shift value to the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.) The vertical order pertains to the superseded datum.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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