Airborne geophysical surveys

Survey name Type Altitude Spacing Flight line distance
Devils LakeM/R-D121.9 m 9.60 km2,212 km
NE North DakotaM-D152.4 m above ground0.40 km29,265 km
Thief River FallsM/R-D121.9 m 9.60 km2,277 km