Airborne geophysical surveys

Survey name Type Altitude Spacing Flight line distance
ChoteauM/R-D121.92 m 9.66 km2,250 km
Cut BankM/R-D121.92 m 9.66 km2,223 km
Washington-Idaho-MontanaM-Dz2133.6 m (barometer)3.22 km8,441 km
KalispellM/R-D121.92 m 9.66 km2,324 km
Northwest Montana '67M-Dz2743.2 m (barometer)3.22 km4,345 km
Mission RangeM-Dz2743.2 m (barometer)1.61 km2,655 km
Montana '79M-Dz2438.4 m (barometer)0.80 km1,287 km
N.E. Idaho-W. MontanaM-Dz2133.6 m (barometer)1.61 km14,484 km
MissoulaM-Dz2286 m (barometer)1.61 km6,759 km
Wallace-FlatheadM-D304.8 m above ground1.21 km3,766 km
WallaceM/R-D121.92 m 4.83 km4,469 km