Specimen ID | State | County | Locality | Year |
| Drainage name | Status |
265048
| MT | Big Horn | Bighorn River just below the Yellowtail Afterbay Dam | 1984 |
10080015
| Lower Bighorn | established |
265047
| MT | Big Horn | Bighorn River just below the Yellowtail Afterbay Dam | 1985 |
10080015
| Lower Bighorn | established |
1409665
| MT | Big Horn | Bighorn River, 1 mile down river from 3 mile put-in | 2017 |
10080015
| Lower Bighorn | established |
614231
| MT | Big Horn | Bighorn River. Township:6s, Range:31e, Section:14. Maps:250k-Hardin, 24k-Yellowtil Dam, 100k-Lodge Grass. Downstream Landmark:Cottonwood Campground; Upstream Landmark:Bighorn Lake. | 2001 |
10080015
| Lower Bighorn | established |
265724
| MT | Treasure | Bighorn River | 1981 |
10080015
| Lower Bighorn | established |