Specimen ID | State | County | Locality | Year |
| Drainage name | Status |
745270
| 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 | unknown |
745276
| DC | District of Columbia | Potomac River, channel along west side of Roosevelt Island above walk bridge, E side of Rosslyn | 2010 |
02070010
| Middle Potomac-Anacostia-Occoquan | unknown |