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Details for Benchmark: HW1447

N 38° 59.567 W 079° 07.267 (NAD 83)

Altitude: 936.61

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

Location:
In GRANT county, WV View Original Datasheet
Designation:
938
Marker Type:
survey 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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Recovered as described.

[Photos:]
photoDisk

Thought I posted this a long time ago.

Found as described, disk in poor condition but is secure in setting

[Photos:]
photo938 HW1447 Petersburg, WV
closeup of disk
photo938 HW1447 Petersburg, WV
the setting

Found it with dukemartin.

Disk in poor condition.

[Photos:]
photoLocation
photoCloseup

Found while passing through Petersburg. It looks like it's been hit by a lawn mower several times.

[Photos:]
photoHW1447 benchmark
photoHW1447 location
Looking toward Rt 220
photoHW1447 looking toward the courthouse

I've walked past this one many times and never realized it was there.

Found generally as described in poor condition as previously noted. Station is also about 7 feet southeast of a stop sign on a metal post. Although pieces of the disk are broken off, the datum point is intact.

[Photos:]
photoCloseup, station 838, Petersburg, WV
photoArea view, station 838, Petersburg, WV
View to the west. U.S. 220 is visible on the left side of photo. Location of station disk indicated by yellow box.
photoWW I Memorial at station 838, Petersburg, WV
This monument stands at the courthouse entrance. The inscription reads, "Dedicated to the men of Grant County who gave their lives in the service of their country during the World War."
N 38° 59.575 W 079° 07.265

The disk is a USGS Meridian Mark disk. It was found in poor condition with parts broken off from 2 sides. The disk is mounted in stone flush with the ground. The pipe railing is gone. The position of the disk is 34 inches South of the front edge extended of the building and 87 inches East of the edge of Pepsi Lane.

[Photos:]
photoAt 938 in Grant County, WV
The yellow arrow indicates the position of the disk in the lawn. The view is looking East.
photo938 in Grant County, WV
The disk.

Documented History (by the NGS)

Unknown by USGS (MONUMENTED)
01/01/1941 by NGS (GOOD)
DESCRIBED BY NATIONAL GEODETIC SURVEY 1941 AT PETERSBURG. AT PETERSBURG, AT THE GRANT CO. COURT HOUSE, 45.6 FEET WEST OF THE NORTHWEST CORNER OF THE BUILDING, 31.5 FEET SOUTH OF THE SOUTH CURB OF U.S. RT. 220, 4.4 FEET EAST OF A PIPE RAILING AROUNG YARD. A STANDARD U.S.G.S. DISC IN STONE POST.

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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