Specimen ID | State | County | Locality | Year |
| Drainage name | Status |
291253
| MT | Fergus | Sacagawea River River Miles: 7.6 to 7.7 | 1999 |
10040205
| Lower Musselshell | established |
291256
| MT | Fergus | Sacagawea River(River Miles: 45.9 to 46) | 2009 |
10040205
| Lower Musselshell | established |
291067
| MT | Garfield | Calf Creek(River Miles: 0.5 to 0.6) | 2006 |
10040205
| Lower Musselshell | established |
291069
| MT | Garfield | Calf Creek(River Miles: 34 to 34.1) | 2005 |
10040205
| Lower Musselshell | established |
291068
| MT | Garfield | Calf Creek(River Miles: 7.3 to 7.4) | 2010 |
10040205
| Lower Musselshell | established |
285232
| MT | Garfield | Lodgepole Creek River Miles: 0.4 to 0.5 | 2006 |
10040205
| Lower Musselshell | established |
290404
| MT | Garfield | Musselshell River(River Miles: 7.4 to 7.5)[Calculated using NHD+ v2.0 GIS dataset] | 2005 |
10040205
| Lower Musselshell | established |
290405
| MT | Garfield | Musselshell River(River Miles: 7.9 to 8)[Calculated using NHD+ v2.0 GIS dataset] | 2003 |
10040205
| Lower Musselshell | established |
290406
| MT | Garfield | Musselshell River(River Miles: 7.9 to 8)[Calculated using NHD+ v2.0 GIS dataset] | 2004 |
10040205
| Lower Musselshell | established |
290408
| MT | Garfield | Musselshell River(River Miles: 70 to 80)[Calculated using NHD+ v2.0 GIS dataset] | 2006 |
10040205
| Lower Musselshell | established |
290409
| MT | Garfield | Musselshell River(River Miles: 70 to 80)[Calculated using NHD+ v2.0 GIS dataset] | 2006 |
10040205
| Lower Musselshell | established |
36398
| MT | Musselshell | Musselshell River at bend | 1990 |
10040205
| Lower Musselshell | established |
291254
| MT | Petroleum | Sacagawea River(River Miles: 30.7 to 30.8) | 2003 |
10040205
| Lower Musselshell | established |
291255
| MT | Petroleum | Sacagawea River(River Miles: 30.7 to 30.8) | 2003 |
10040205
| Lower Musselshell | established |