Specimen ID | State | County | Locality | Year |
| Drainage name | Status |
1677224
| DC | District of Columbia | [No locality description provided] | 2021 |
02070010
| Middle Potomac-Anacostia-Occoquan | |
748363
| DC | District of Columbia | Potomac River, 1.2 mile reach from 400 m above Chain Bridge Road to Fletchers Boathouse, W end of D.C. and Arlington | 2010 |
02070008
| Middle Potomac-Catoctin | established |
280392
| DC | District of Columbia | Potomac River, 1.2 mile reach from 400 m above Chain Bridge Road to Fletcher's Boathouse, W end of D.C. and Arlington. | 2010 |
02070010
| Middle Potomac-Anacostia-Occoquan | established |