| Survey name | Type | Altitude | Spacing | Flight line distance |
|---|---|---|---|---|
| Choteau | M/R-D | 121.9 m | 9.60 km | 2,249 km |
| Cut Bank | M/R-D | 121.9 m | 9.60 km | 2,222 km |
| Great Falls | M/R-D | 121.9 m | 4.80 km | 4,330 km |
| Northwest Montana '65 | M-Dz | 2743 m (barometer) | 3.20 km | 6,598 km |
| Northwest Montana '67 | M-Dz | 2743 m (barometer) | 3.20 km | 4,345 km |
| Shelby | M/R-D | 121.9 m | 4.80 km | 3,242 km |