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Details for Benchmark: LY0727

N 41° 20.767 W 074° 40.767 (NAD 83)

Altitude: 675.71

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

Location:
In SUSSEX county, NJ View Original Datasheet
Designation:
F 14
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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N 41° 20.805 W 074° 40.648

Found it! Northernmost benchmark in New Jersey! Station is located southwest of the old bridge, on south side of old trail/driveway. Coordinates are terrible. .12 mile off! Hand-held GPS coordinates above.

[Photos:]
photoLY0727 Montague Sussex NJ Close Up
photoLY0727 Montague Sussex NJ View Northeast
Toward bridge.
photoLY0727 Montague Sussex NJ View Downward

Extrapolated coordinates from Topozone: N 41º 20.81 W 74º 40.66. Fiddlers Elbow is a private road. These coordinates led me to the south side of a bridge over a small stream, as described. Unable to locate station.

Documented History (by the NGS)

01/01/1933 by CGS (MONUMENTED)
01/01/1934 by NGS (GOOD)
DESCRIBED BY NATIONAL GEODETIC SURVEY 1934 1.5 MI S FROM PORT JERVIS. IN SUSSEX COUNTY, NEW JERSEY, 1.5 MILES SOUTH ALONG THE SUSSEX-PORT JERVIS HIGHWAY FROM PORT JERVIS, ORANGE COUNTY, NEW YORK, ON THE INSIDE OF A HORSESHOE CURVE OF THE HIGHWAY, 100 FEET EAST OF A 2-STORY FRAME DWELLING, 24 FEET SOUTH OF A BRIDGE OVER A SMALL STREAM, AND 18 FEET SOUTH OF THE STREAM. A STANDARD DISK, STAMPED 676.272 F 14 1933 AND SET IN THE TOP OF A CONCRETE 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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