Airborne geophysical surveys

Survey name Type Altitude Spacing Flight line distance
Minnesota Coop SouthwestM-Dz304.8 m above ground1.60 km16,173 km
SwiftM-Dz304.8 m above ground1.60 km14,162 km
WatertownM/R-D121.9 m 9.60 km2,381 km