Specimen ID | State | County | Locality | Year |
| Drainage name | Status |
850929
| MT | Fallon | Maier Reservoir | 1995 |
10100005
| O'Fallon | established |
1697870
| MT | Fallon | Maier Reservoir | 1999 |
10100005
| O'Fallon | eradicated |
264254
| MT | Fallon | O'Fallon Creek | 2001 |
10100005
| O'Fallon | established |
264255
| MT | Fallon | O'Fallon Creek | 2002 |
10100005
| O'Fallon | established |
264234
| MT | Fallon | Pennel Creek | 2002 |
10100005
| O'Fallon | established |
264256
| MT | Fallon | Sandstone Creek | 2001 |
10100005
| O'Fallon | established |
609283
| MT | Fallon | Site Name:O'Fallon Creek. Township:8n, Range:56e, Section:7. Maps:250k-Miles City, 24k-Ismay South, 100k-Baker. Downstream Landmark:Sandstone Creek Baldwin Leland Road and Upstream Landmark:Hwy 12 Crossing. | 2001 |
10100005
| O'Fallon | established |
264355
| MT | Prairie | O'Fallon Creek | 2002 |
10100005
| O'Fallon | established |
264356
| MT | Prairie | O'Fallon Creek | 2003 |
10100005
| O'Fallon | established |