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Details for Benchmark: JV2028

N 39° 59.267 W 077° 22.850 (NAD 83)

Altitude: 1404.54

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

Location:
In ADAMS county, PA View Original Datasheet
Designation:
D 164
Marker Type:
bench mark disk
Setting:
in rock outcrop
Stability:
Most reliable and expected to hold position/elevation well.

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Recovered in good condition.. The trick with this one is that there are 2 culverts. The mark is 30' W of the NE culvert, which is across the road from the northmost point of the camp. The mark is in a boulder, about 4 ft. E of a forked 30" tree and 3 ft. NW of 2" small pine. and (approx) 100 ft. NE of pole #17121861 - pole in original description is gone...

[Photos:]
photoD 164 (JV2028) disk - Adams County, PA
photoD 164 (JV2028) disk incognito
..as I found it
photoD 164 (JV2028) setting - looking SE
photoD 164 (JV2028) area - looking W
..mark is near base of large tree at center right

The description from fellow benchmarkers lead me
to the right area.

The coords and description put us in the right area, but didn't lead us directly to the mark. We did find it after a bit of searching. Mark is on the NW side of the road, across from the 'Mtn. Lodge' camp, 30' W of the headwall of a culvert.

Greetings Geocachers/Benchmarkers,

After two unsuccessful attempts, with the help of fellow benchmarkers, and after reworking the available information on this benchmark, found this benchmark without too much difficulty. The coordinates should be sufficient to locate this benchmark, on the west side of Route 233.

Happy Benchmarking,
Ghosthunter
Gettysburg, PA

Documented History (by the NGS)

01/01/1942 by CGS (MONUMENTED)
DESCRIBED BY COAST AND GEODETIC SURVEY 1942 5.4 MI SW FROM PINE GROVE FURNACE. IN ADAMS COUNTY, 5.4 MILES SOUTHWEST ALONG STATE HIGHWAY 233 FROM THE POST OFFICE AT PINE GROVE FURNACE, CUMBERLAND COUNTY, 11.4 FEET NORTHWEST OF THE NORTH CORNER OF BLACK HAWK CAMP, 30 FEET NORTHWEST OF THE CENTERLINE OF THE HIGHWAY, 20 FEET WEST OF A TELEPHONE POLE, AND IN THE TOP OF A ROCK OUTCROP. A STANDARD DISK, STAMPED D 164 1942.

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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