Specimen ID | State | County | Locality | Year |
| Drainage name | Status |
36821
| MT | | lower Musselshell drainage | 1990 |
10040205
| Lower Musselshell | established |
290429
| MT | Garfield | Musselshell River(River Miles: 5.6 to 13)[Calculated using NHD+ v2.0 GIS dataset] | 2011 |
10040205
| Lower Musselshell | established |
290430
| MT | Garfield | Musselshell River(River Miles: 7.4 to 7.5)[Calculated using NHD+ v2.0 GIS dataset] | 2005 |
10040205
| Lower Musselshell | established |
290431
| MT | Garfield | Musselshell River(River Miles: 7.9 to 8)[Calculated using NHD+ v2.0 GIS dataset] | 2003 |
10040205
| Lower Musselshell | established |
290432
| MT | Petroleum | Musselshell River(River Miles: 77.2 to 77.3)[Calculated using NHD+ v2.0 GIS dataset] | 2010 |
10040205
| Lower Musselshell | established |
290433
| MT | Petroleum | Musselshell River(River Miles: 81 to 81.1)[Calculated using NHD+ v2.0 GIS dataset] | 2010 |
10040205
| Lower Musselshell | established |