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Details for Benchmark: KV1338

N 40° 43.533 W 074° 46.500 (NAD 83)

Altitude: 761.14

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

Location:
In HUNTERDON county, NJ View Original Datasheet
Designation:
A 30
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 by description.

[Photos:]
photoKV1338 Tewksbury Hunterdon NJ Close Up
photoKV1338 Tewksbury Hunterdon NJ View Southwest
N 40° 43.520 W 074° 46.512

Near the rear of the church at the intersection of CR 512 and CR 517.

[Photos:]
photoA 30 (KV1338) Hunterdon Co. NJ
photoKV1338 Hunterdon Co. NJ facing west along CR 512

Documented History (by the NGS)

01/01/1942 by CGS (MONUMENTED)
DESCRIBED BY COAST AND GEODETIC SURVEY 1942 3.8 MI S FROM CALIFON. 3.8 MILES EAST ALONG A MACADAM ROAD FROM THE CENTRAL RAILROAD OF NEW JERSEY STATION AT CALIFON, HUNTERDON COUNTY, 300 FEET SOUTHEAST OF A ROAD JUNCTION, 35.3 FEET NORTHEAST OF THE NORTHEAST CORNER OF THE FAIRMOUNT METHODIST CHURCH, 27.3 FEET SOUTH OF THE CENTERLINE OF THE ROAD, 6.7 FEET WEST OF A MAPLE TREE, AND ABOUT 3 FEET HIGHER THAN THE ROAD.

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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