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Details for Benchmark: AX1569

N 29° 44.117 W 097° 26.333 (NAD 83)

Altitude: 440.3

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

Location:
In CALDWELL county, TX View Original Datasheet
Designation:
P 830
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 poor condition.

[Photos:]
photoAX1569 setting
photoAX1569 setting
This shot also shows the monument leaning.
photoAX1569 setting
You can see the monument leaning to the side in this shot.
photoAX1569

Documented History (by the NGS)

01/01/1943 by CGS (MONUMENTED)
DESCRIBED BY COAST AND GEODETIC SURVEY 1943 9.5 MI NE FROM HARWOOD. IN CALDWELL COUNTY, 9.5 MILES NORTHEAST OF HARWOOD, GONZALES COUNTY. THIS BENCH MARK MAY BE REACHED FROM THE PUBLIC SCHOOL BY GOING 2.5 MILES NORTH ALONG A GRADED DIRT ROAD, TURN RIGHT AND GO 2.0 MILES EAST, TURN LEFT AND GO 1.7 MILES NORTH, TURN RIGHT AND GO 2.6 MILES EAST, AND TURN LEFT AND GO 0.7 MILE NORTH. IT IS AT A DIVISION-FENCE CORNER, BETWEEN A CULTIVATED FIELD AND A MESQUITE THICKET, 22 FEET EAST OF THE CENTERLINE OF THE ROAD, 3 FEET NORTH OF A FENCE CORNER, 1 FOOT EAST OF THE RIGHT-OF-WAY FENCE, 3 FEET SOUTH OF A WHITE WOODEN WITNESS POST, AND LEVEL WITH THE ROAD. A STANDARD DISK, STAMPED P 830 1943 AND SET IN THE TOP OF A CONCRETE POST PROJECTING 0.6 FOOT ABOVE GROUND.
08/08/1993 by USPSQD (GOOD)
RECOVERY NOTE BY US POWER SQUADRON 1993 (UNK) 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  • The NAVD 88 height was computed by applying the VERTCON shift value to the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.) The vertical order pertains to the superseded datum.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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