Specimen ID | State | County | Locality | Year |
| Drainage name | Status |
36651
| MT | | Judith River, upper | 1980 |
10040103
| Judith | collected |
36688
| MT | | Pend Orielle drainage | 1980 |
17010200
| Pend Oreille | collected |
36680
| MT | Big Horn | Big Horn River near junction w/ Little Bighorn | 1980 |
10080015
| Lower Bighorn | collected |
36678
| MT | Big Horn | Tongue River, upper, near state line | 1980 |
10090101
| Upper Tongue | collected |
36686
| MT | Chouteau | Missouri River at northernmost bend in river | 1980 |
10040101
| Bullwhacker-Dog | collected |
36683
| MT | Garfield | south of Fort Peck Reservoir | 1980 |
10040205
| Lower Musselshell | collected |
36687
| MT | Hill | Milk drainage, [upper] | 1980 |
10050000
| Milk | collected |
36684
| MT | Petroleum | Box Elder Creek | 1980 |
10040204
| Box Elder | collected |
36682
| MT | Stillwater | Big Lake | 1980 |
10070004
| Upper Yellowstone-Lake Basin | collected |
36681
| MT | Yellowstone | Yellowstone River near Billings | 1980 |
10070004
| Upper Yellowstone-Lake Basin | collected |