Specimen ID | State | County | Locality | Year |
| Drainage name | Status |
35121
| MD | | Potomac River | 1980 |
02070008
| Middle Potomac-Catoctin | established |
1334598
| MD | Charles | Potomac River at Indianhead | 1976 |
02070010
| Middle Potomac-Anacostia-Occoquan | established |
1334603
| MD | Prince George's | Potomac River at Fort Washington | 1976 |
02070010
| Middle Potomac-Anacostia-Occoquan | established |
268795
| VA | | Potomac (HUC6) non-specific | 1986 |
02070000
| Potomac | established |
45053
| VA | | Potomac (HUC6) non-specific | 1994 |
02070000
| Potomac | established |
153343
| VA | Fairfax | Occoquan River | 1994 |
02070010
| Middle Potomac-Anacostia-Occoquan | collected |
153344
| VA | Fairfax | Potomac River | 1994 |
02070010
| Middle Potomac-Anacostia-Occoquan | collected |
153336
| VA | Prince William | Potomac River near Quantico | 1994 |
02070011
| Lower Potomac | collected |
46764
| WV | | Potomac (HUC6) non-specific | 1993 |
02070000
| Potomac | collected |
46782
| WV | Grant | Mount Storm Lake | 1993 |
02070002
| North Branch Potomac | established |
46772
| WV | Mineral | Jennings Randolph Lake | 1993 |
02070002
| North Branch Potomac | extirpated |
46773
| WV | Mineral | Jennings Randolph Lake | 1993 |
02070002
| North Branch Potomac | extirpated |