Details for Benchmark: LY0773

N 41° 05.283 W 074° 49.600 (NAD 83)

Altitude: 531.31

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

Location:
In SUSSEX county, NJ View Original Datasheet
Designation:
K 30
Marker Type:
bench mark disk
Setting:
massive structures
Stability:
Probably hold position/elevation well.

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Navigation

Found it 06/15/2006 jpass found LY0773   Visit Log

Found it!
Found it 06/11/2006 Andy Bear found LY0773   Visit Log

Found it.®
Found it 06/11/2006 Harry Dolphin found LY0773   Visit Log

Found by description.

[Photos:]
photoLY0773 Stillwater Sussex NJ Close Up
photoLY0773 Stillwater Sussex NJ View Southeast
Found it 10/17/2004 holograph found LY0773   Visit Log
N 41° 05.278 W 074° 49.617

Easily found.

[Photos:]
photoK 30 Sussex Co. NJ (LY0773)
photoK 30 Sussex Co. NJ Facing SW

Documented History (by the NGS)

01/01/1942 by CGS (MONUMENTED)
DESCRIBED BY COAST AND GEODETIC SURVEY 1942 AT SWARTSWOOD. AT SWARTSWOOD, 0.1 MILE NORTHEAST OF THE POST OFFICE, AT A CONCRETE BRIDGE. A STANDARD DISK, SET IN THE TOP OF THE SOUTHEAST END OF THE NORTHEAST ABUTMENT.
01/01/1984 by NJGS (GOOD)
RECOVERY NOTE BY NEW JERSEY GEODETIC SURVEY 1984 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 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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