Specimen ID | State | County | Locality | Year |
| Drainage name | Status |
280478
| 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 |
746346
| DC | District of Columbia | Potomac River, sand bar along Virginia shore, ca. 0.5 mile above (W of) Key Bridge crossing, W end of Arlington and D.C. | 2010 |
02070010
| Middle Potomac-Anacostia-Occoquan | unknown |
158321
| DC | District of Columbia | Rock Creek Park | 1999 |
02070010
| Middle Potomac-Anacostia-Occoquan | established |