| Survey name | Type | Altitude | Spacing | Flight line distance |
|---|---|---|---|---|
| Washington-Idaho-Montana | M-Dz | 2134 m (barometer) | 3.20 km | 8,441 km |
| Saddle Mountain | M/R-D | 121.9 m above ground | 0.40 km | 458 km |
| N.E. Idaho-W. Montana | M-Dz | 2134 m (barometer) | 1.60 km | 14,484 km |
| Sandpoint | M/R-D | 121.9 m | 1.60 km | 9,994 km |