Survey name | Type | Altitude | Spacing | Flight line distance |
---|---|---|---|---|
Billings | M/R-D | 121.9 m | 4.80 km | 4,581 km |
Cody | M/R-D | 121.9 m | 4.80 km | 4,646 km |
Hardin | M/R-D | 121.9 m | 9.60 km | 2,537 km |
South-central Montana | M-Dz | 3658 m (barometer) | 3.20 km | 1,834 km |
Powder River Basin | M-D | 121.9 m above ground | 9.60 km | 9,948 km |
Powder River R&D | M/R-D | 121.9 m above ground | 9.60 km | 2,446 km |
Sheridan | M/R-D | 121.9 m | 4.80 km | 4,665 km |
Cloud Peak | M-Dz | 4267 m (barometer) | 1.60 km | 1,018 km |
Cloud Peak Extension West | M-Dz | 3658 m (barometer) | 1.60 km | 160 km |