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Details for Benchmark: BM0433

N 30° 06.300 W 097° 18.750 (NAD 83)

Altitude: 364.75

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

Location:
In BASTROP county, TX View Original Datasheet
Designation:
W 1225
Marker Type:
bench mark disk
Setting:
massive structures
Stability:
Probably hold position/elevation well.

Must Read!

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In town for the weekend knew where to find this one.

Found while down for the challenge.

Found this while attending the Texas Challenge 2014. I wanted to find a benchmark and this one was convenient. Easy find on the bridge, even in the dark.

This entry was edited by Indigo Parrish on Monday, 31 March 2014 at 03:09:25 UTC.

[Photos:]
photoBM0433
photoBM0433 Setting

Easy find on the bridge. Beautiful setting and view!

Found easily per datasheet in Bastrop.

Found this benchmark while caching in Bastrop.
It is in good condition and solid.
Ross H

[Photos:]
photoBM0433

Hiked Bastrop State Park today and also decided to seek out a couple Benchmarks while in the area

Found at night on the way home from work and some evening benchmark hunting... ;-) Recovered in good condition.

[Photos:]
photoBM0433
N 30° 06.320 W 097° 18.761

Recovered as described in good condition.

TxHiPowr

Documented History (by the NGS)

01/01/1973 by NGS (MONUMENTED)
DESCRIBED BY NATIONAL GEODETIC SURVEY 1973 0.4 MI S FROM BASTROP. ABOUT 0.4 MILES SOUTH ALONG THE MISSOURI, KANSAS AND TEXAS RAILROAD FROM THE STATION AT BASTROP, 45.0 FEET WEST, SOUTHWEST OF THE CENTER OF THE CROSSING OF WITH COLLEGE ST., 40.0 FEET WEST OF THE WEST TRACK OF THE MAIN TRACK AT A CONCRETE BRIDGE OVER A DRAINAGE DITCH, 12.7 FEET SOUTH OF THE CENTER LINE OF COLLEGE ST. SET IN TOP OF THE SOUTH END OF THE EAST CONCRETE ABUTMENT OF THE BRIDGE. NOTE-- THIS MARK IS ALSO 0.3 MILES SOUTH ALONG THE PECAN ST. FROM THE COUNTY COURTHOUSE, THENCE 0.3 MILES EAST ALONG COLLEGE STREET.
01/01/1978 by NGS (GOOD)
RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1978 RECOVERED IN GOOD CONDITION.
12/26/1995 by USPSQD (GOOD)
RECOVERY NOTE BY US POWER SQUADRON 1995 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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