Northwest Wisconsin (WI)

Survey type M-D (magnetic; collected in digital form)
Flown by U.S. Geological Survey
Date flown 06/88-07/88
Line spacing 0.8 (km)
Altitude 91 (m) above ground
Total distance 6,316 (km)
References
Counties Carlton - Pine - Saint Louis - Burnett - Douglas - Washburn
Overlapping surveys

Data: Magnetic, very low frequency electromagnetic (M/V-D)