Delaware Fall Zone (DE-PA-MD)

Survey type M-Dz (magnetic; digitized from contour maps)
Flown by USGS
Date flown 04/53-06/53
Line spacing 0.8 (km)
Altitude 304.8 (m) above ground
Total distance 2,063 (km)
References
Counties New Castle - Cecil - Gloucester - Salem - Chester - Delaware
Overlapping surveys

Data: Magnetic (M-Dz)