| Survey name | Type | Altitude | Spacing | Flight line distance |
|---|---|---|---|---|
| Hamilton | M/R-D | 121.9 m | 4.80 km | 3,353 km |
| Washington-Idaho-Montana | M-Dz | 2134 m (barometer) | 3.20 km | 8,441 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 |
| Wallace | M/R-D | 121.9 m | 4.80 km | 4,469 km |