Specimen ID | State | County | Locality | Year |
| Drainage name | Status |
36421
| MT | | Musselshell River from Fort Peck Lake to just past bend | 1990 |
10040202
| Middle Musselshell | established |
290422
| MT | Musselshell | Musselshell River(River Miles: 153.9 to 154)[Calculated using NHD+ v2.0 GIS dataset] | 2006 |
10040202
| Middle Musselshell | established |
290423
| MT | Musselshell | Musselshell River(River Miles: 193.8 to 193.9)[Calculated using NHD+ v2.0 GIS dataset] | 2000 |
10040202
| Middle Musselshell | established |
290421
| MT | Petroleum | Musselshell River(River Miles: 93 to 93.1)[Calculated using NHD+ v2.0 GIS dataset] | 2010 |
10040202
| Middle Musselshell | established |