Specimen ID | State | County | Locality | Year |
| Drainage name | Status |
36720
| MT | | Yellowstone River, lower, from the Missouri to as far upstream as just below Intake | 1980 |
10100004
| Lower Yellowstone | collected |
36392
| MT | | Missouri River from ND to Fort Peck Lake | 1990 |
10060005
| Charlie-Little Muddy | established |
36721
| MT | Garfield | Missouri River, 6 km below Ft. Peck Reservoir | 1980 |
10040205
| Lower Musselshell | collected |
300125
| MT | Richland | Missouri River South of Bainville | 2007 |
10060005
| Charlie-Little Muddy | established |
292255
| MT | Richland | Missouri River(River Miles: 1,614.7 to 1,614.8) | 2009 |
10060005
| Charlie-Little Muddy | established |
36393
| MT | Richland | Yellowstone River near ND line | 1990 |
10100004
| Lower Yellowstone | established |
292257
| MT | Richland | Yellowstone River(River Miles: 31.8 to 33.6) | 2010 |
10100004
| Lower Yellowstone | established |
292258
| MT | Richland | Yellowstone River(River Miles: 46.8 to 48) | 2010 |
10100004
| Lower Yellowstone | established |
158619
| MT | Roosevelt | Missouri River (Wolf Pt. to Yellowstone River RM 1701.0-1582.0) | 1997 |
10060005
| Charlie-Little Muddy | collected |