New Jersey Highlands '51 (NJ-NY)

Survey type M-Dz (magnetic; digitized from contour maps)
Flown by USGS
Date flown 04/51-05/51
Line spacing 0.4 (km)
Altitude 152.4 (m) above ground
Total distance 3,895 (km)
References
Counties Bergen - Essex - Morris - Passaic - Sussex - Union - Orange - Rockland
Overlapping surveys

Data: Magnetic (M-Dz)