Skip to content

Details for Benchmark: LY0748

N 41° 04.367 W 074° 57.750 (NAD 83)

Altitude: 657.89

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

Location:
In WARREN county, NJ View Original Datasheet
Designation:
Z 33
Marker Type:
bench mark disk
Setting:
in a boulder
Stability:
May hold, but of type commonly subject to surface motion.

Must Read!

Benchmarks may be on private property or in dangerous locations. Obey local laws. By using the services on Geocaching.com you agree to this disclaimer.

Found this on my travels through Millbrook Village.

[Photos:]
photoBenchmark Disk
By Pedestrian Bridge

Another easy find. A new pedestrian bridge has been built next to the disk.

[Photos:]
photoLY0748 Z33

found it agian while geocaching>

Found it while out doing other caches

New Years day geocaching and benchmarking. I wonder how long this location is going to exist!

Found it.® Beautiful area.

Found by description. This old bridge looks like it's being demolished.

[Photos:]
photoLY0748 Hardwick Warren NJ View South
photoLY0748 Hardwick Warren NJ Close Up

We had found this benchmark previously with Raline from Maine. Visited it again today, along with finding 4 other benchmarks in the area. Received a GPS for Christmas and are having a great time using it.

N 41° 04.381 W 074° 57.741

Found this benchmark in the historic Millbrook Village, which is now part of Hardwick Township in Warren County, New Jersey. Visiting this site with son and grandchildren who are from this area. This village is now part of the Delaware Water Gap National Recreation Area.

[Photos:]
photoView of old mill near BM
photoUSGS BM Disk

Documented History (by the NGS)

01/01/1942 by CGS (MONUMENTED)
DESCRIBED BY COAST AND GEODETIC SURVEY 1942 AT MILLBROOK. AT MILLBROOK, ABOUT 125 FEET SOUTH OF THE MILLBROOK INN, AT A CONCRETE BRIDGE. A STANDARD DISK, SET IN THE TOP OF THE NORTH END OF THE SOUTHWEST GUARD WALL, AND 9 FEET WEST OF THE CENTER LINE OF 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.

Advertising with Us