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Details for Benchmark: AX1490

N 29° 41.250 W 097° 06.000 (NAD 83)

Altitude: 445

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

Location:
In FAYETTE county, TX View Original Datasheet
Designation:
Y 819 RESET 1955
Marker Type:
bench mark disk
Setting:
massive structures
Stability:
Probably hold position/elevation well.

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Found it next to a small flea market. The ladies clearly wondered what I was doing, but were too polite to ask.

Recovered as described in good condition.

[Photos:]
photoAX1490 setting
photoAX1490

This one is right where the description says it is. It's faded green from oxidization.

Documented History (by the NGS)

01/01/1955 by TXHD (MONUMENTED)
DESCRIBED BY TEXAS HIGHWAY DEPARTMENT 1955 0.2 MI E FROM FLATONIA. 0.2 MILE EAST ALONG U.S. HIGHWAY 90 FROM THE METHODIST CHURCH AT FLATONIA, AT A CONCRETE-BOX CULVERT, IN THE TOP OF THE NORTH-CORNER OF THE SOUTH COMBINATION HEAD WALL, CURB, AND SIDEWALK, 0.5 FOOT NORTH OF THE NORTH EDGE OF THE SOUTH HAND RAIL, 38.3 FEET SOUTH OF THE CENTER LINE OF THE HIGHWAY, AND ABOUT 1/2 FOOT HIGHER THAN THE HIGHWAY.
01/01/1987 by USPSQD (GOOD)
RECOVERY NOTE BY US POWER SQUADRON 1987 (WCJ) RECOVERED IN GOOD CONDITION.
01/01/1988 by USPSQD (GOOD)
RECOVERY NOTE BY US POWER SQUADRON 1988 (LEG) RECOVERED IN GOOD CONDITION.
06/08/1991 by USPSQD (GOOD)
RECOVERY NOTE BY US POWER SQUADRON 1991 (MW) RECOVERED IN GOOD CONDITION.
06/07/1997 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  • The NAVD 88 height was computed by applying the VERTCON shift value to the NGVD 29 height (displayed under SUPERSEDED SURVEY CONTROL.) The vertical order pertains to the superseded datum.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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