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Details for Benchmark: FS0259

N 35° 33.983 W 115° 21.900 (NAD 83)

Altitude: 2754.03

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

Location:
In SAN BERNARDINO county, CA View Original Datasheet
Designation:
B 328
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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Found with we4fullers & Mineral54 at 08:14.

[Photos:]
photoB328 -1935

Benchmark hunting and caching today with 2nd1of3 and we4fullers on a cool morning.

[Photos:]
photoB 328
photo

Out grabbing come benchmarks with 2ns1of3 and Mineral54 today.

[Photos:]
photo
photo
N 35° 34.021 W 115° 21.889

Recovered in good condition. Witness post is gone. There is a cut off utility pole nearby.

[Photos:]
photoB 328 near Primm NV
photoB 328 Looking NW
N 35° 34.021 W 115° 21.888

Benchmark B328 recovered in good condition. It was found as described with the following exception:

The 7th pole northwest of MP 286 has been cut down. (The poles on the west side of the railroad tracks have been cut down and replaced by poles on the east side of the tracks.) This mark is now approximately 80 feet southwest of the 9th pole northwest of MP 286.

[Photos:]
photoBenchmark B328 w/GPSr
photoBenchmark B328
photoBenchmark B328 from Eye Level
photoNorthwest at Benchmark B328
The remains of the old pole can be seen behind and to the left of the benchmark.
photoSouthwest at Benchmark B328

Location is now a wash.
Most likely destroyed

[last edit: 11/5/2002 8:33:54 PM PST]

Documented History (by the NGS)

01/01/1935 by CGS (MONUMENTED)
01/01/1949 by NGS (GOOD)
DESCRIBED BY NATIONAL GEODETIC SURVEY 1949 8.7 MI NW FROM NIPTON. 8.7 MILES NORTHWEST ALONG THE UNION PACIFIC RAILROAD FROM THE STATION AT NIPTON, 9 FEET SOUTHEAST OF THE 7TH TELEPHONE POLE NORTHWEST OF MILEPOLE 286, 7 1/2 RAILS NORTHWEST OF CULVERT 286.18, 46.0 FEET SOUTHWEST OF THE SOUTHWEST RAIL, 10 FEET NORTHEAST OF THE CENTER LINE OF A DIM TRACK ROAD, 1.4 FEET WEST OF A WITNESS POST, ABOUT 6 FEET LOWER THAN THE TRACK, AND SET IN THE TOP OF A CONCRETE POST PROJECTING 0.4 FOOT ABOVE THE GROUND.
01/01/1955 by NGS (GOOD)
RECOVERY NOTE BY NATIONAL GEODETIC SURVEY 1955 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 1992. * This is a POSTED BENCH MARK height. Code A indicates a distribution rate of 0.0 thru 1.0 mm/km.
  • 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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