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- Montana
Airborne geophysical surveys
| Survey name |
Type |
Altitude |
Spacing |
Flight line distance |
| Butte | M/R-D | 121.9 m | 4.80 km | 4,406 km |
| Choteau | M/R-D | 121.9 m | 9.60 km | 2,249 km |
| Hamilton | M/R-D | 121.9 m | 4.80 km | 3,353 km |
| Selway-Bitterroot | M-Dz | 3353 m (barometer) | 1.60 km | 9,197 km |
| Northwest Montana '65 | M-Dz | 2743 m (barometer) | 3.20 km | 6,598 km |
| Mission Range | M-Dz | 2743 m (barometer) | 1.60 km | 2,655 km |
| Montana '79 | M-Dz | 2438 m (barometer) | 0.80 km | 1,287 km |
| N.E. Idaho-W. Montana | M-Dz | 2134 m (barometer) | 1.60 km | 14,484 km |
| Missoula | M-Dz | 2286 m (barometer) | 1.60 km | 6,759 km |
| Butte '83 | M-D | 2743 m (barometer) | 1.60 km | 11,844 km |
| Wallace | M/R-D | 121.9 m | 4.80 km | 4,469 km |
