New Hampshire Coop North (NH-ME)

Survey type M-Dz (magnetic; digitized from contour maps)
Flown by USGS
Date flown 09/55
Line spacing 0.8 (km)
Altitude 228.6 to 762 (m) above ground
Total distance 1,770 (km)
References
Counties Coos
Overlapping surveys

Data: Magnetic (M-Dz)