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Details for Benchmark: AX1089

N 29° 40.917 W 096° 54.167 (NAD 83)

Altitude: 366.35

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

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

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Stopped in Schulenburg on the way from Houston to San Antonio.

[Photos:]
photoAX1089 location
photoAX1089

Recovered as described in good condition.

[Photos:]
photoAX1089 setting
photoAX1089

Recovered in good condition, as described. . . . patrick & shirley

[Photos:]
photoAX1089 J 819 DISK
N 29° 41.076 W 096° 54.394

Found it - is close to someone's front yard.

[Photos:]
photoAX1089
Reference Mark Disk

Documented History (by the NGS)

01/01/1943 by CGS (MONUMENTED)
01/01/1972 by NGS (GOOD)
DESCRIBED BY NATIONAL GEODETIC SURVEY 1972 IN SCHULENBURG. AT SCHULENBURG, 172 FEET EAST OF THE CENTER OF THE INTERSECTION OF U.S. HIGHWAY 77 AND U.S. HIGHWAY 90, 42 FEET NORTH OF THE CENTER LINE OF U.S. HIGHWAY 90, SET IN THE TOP OF THE NORTH CONCRETE HEADWALL OF A 2- X 5-FOOT CONCRETE BOX CULVERT UNDER U.S. HIGHWAY 90, 2.7 FEET EAST OF THE WEST END OF THE HEADWALL, 69.0 FEET EAST-SOUTHEAST OF THE SOUTHEAST CORNER OF A SERVICE STATION, 32.0 FEET SOUTHWEST OF THE SOUTHWEST CORNER OF HOUSE NUMBER 309, AND ABOUT 1 FOOT ABOVE THE LEVEL OF THE HIGHWAY.
01/01/1987 by USPSQD (GOOD)
RECOVERY NOTE BY US POWER SQUADRON 1987 (CNJ) 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 (TCS) 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 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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