Airborne geophysical surveys

Survey name Type Altitude Spacing Flight line distance
Cut BankM/R-D121.9 m 9.60 km2,222 km
Northwest Montana '67M-Dz2743 m (barometer)3.20 km4,345 km
WA-ID-MT - EastM-Dz2134 m (barometer)3.20 km1,496 km
SweetgrassM-D228.6 m above ground0.40 km12,457 km
ShelbyM/R-D121.9 m 4.80 km3,242 km