Specimen ID | State | County | Locality | Year |
| Drainage name | Status |
1675160
| DC | District of Columbia | [No locality description provided] | 2020 |
02070010
| Middle Potomac-Anacostia-Occoquan | |
280450
| 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 | established |
158319
| DC | District of Columbia | Rock Creek Park | 1999 |
02070010
| Middle Potomac-Anacostia-Occoquan | established |