| Survey name | Type | Altitude | Spacing | Flight line distance |
|---|---|---|---|---|
| Great Falls | M/R-D | 121.9 m | 4.80 km | 4,330 km |
| Lewistown | M/R-D | 121.9 m | 4.80 km | 3,376 km |
| Little Belt Mountains | M-Dz | 2743 m (barometer) | 1.60 km | 720 km |
| Middle Judith | M-Dz | 2743 m (barometer) | 1.20 km | 289 km |
| Roundup | M/R-D | 121.9 m | 9.60 km | 2,504 km |
| White Sulpher Spring | M/R-D | 121.9 m | 4.80 km | 4,433 km |