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Details for Benchmark: BY1267

N 31° 57.833 W 095° 16.367 (NAD 83)

Altitude: 529.87

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

Location:
In CHEROKEE county, TX View Original Datasheet
Designation:
X 67 RESET 1936
Marker Type:
bench mark disk
Setting:
massive structures
Stability:
Probably hold position/elevation well.

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Found as described.

[Photos:]
photoup close
photoarea view

Painted yellow, so a bit hard to see.

[Photos:]
photoLoc of BY1267 X 67 reset 1936
photoBY1267 X 67 reset 1936

Easy find.

[Photos:]
photoBY1267, X 67

Building in now an antique shop.

[Photos:]
photo529.723

Documented History (by the NGS)

01/01/1936 by CGS (MONUMENTED)
01/01/1952 by NGS (GOOD)
DESCRIBED BY NATIONAL GEODETIC SURVEY 1952 IN JACKSONVILLE. AT JACKSONVILLE, CHEROKEE COUNTY, AT THE WEST CORNER OF MAIN AND COMMERCE STREETS, IN THE NORTHEAST WALL OF THE YELLOW BRICK BUILDING OCCUPIED BY THE BEALL BROS., 17-1/2 FEET NORTHWEST OF THE EAST CORNER, AND 3 FEET HIGHER THAT THE SIDEWALK. A STANDARD DISK, STAMPED 529.723 X 67 RESET 1936 AND SET VERTICALLY.
01/01/1959 by NGS (GOOD)
RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1959 RECOVERED IN GOOD CONDITION.
01/01/1979 by NGS (GOOD)
RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1979 RECOVERED IN GOOD CONDITION.
01/01/1990 by USPSQD (GOOD)
RECOVERY NOTE BY US POWER SQUADRON 1990 (GGB) RECOVERED IN GOOD CONDITION.
04/20/1996 by USPSQD (GOOD)
RECOVERY NOTE BY US POWER SQUADRON 1996 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. WARNING-Repeat measurements at this control monument indicate possible vertical movement.
  • 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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