Specimen ID | State | County | Locality | Year |
| Drainage name | Status |
229950
| VA | Fairfax | Dyke Marsh, Potomac River. | 1982 |
02070010
| Middle Potomac-Anacostia-Occoquan | established |
228435
| VA | Fairfax | Potomac River; bay near Belle Haven, south of Alexandria | 1982 |
02070010
| Middle Potomac-Anacostia-Occoquan | established |