New Jersey Highlands North (NY)

Survey type M-Dz (magnetic; digitized from contour maps)
Flown by USGS
Date flown 11/1955
Line spacing 0.4 (km)
Altitude 152.4 (m) above ground
Total distance 2,253 (km)
References
Counties Dutchess - Orange - Putnam - Rockland - Westchester
Overlapping surveys

Data: Magnetic (M-Dz)