Specimen ID | State | County | Locality | Year |
| Drainage name | Status |
1677224
| DC | District of Columbia | M Pl SW, Washington, DC, US | 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 |
35162
| MD | | Blue Ridge, ridge and valley, Great Valley | 1976 |
02070009
| Monocacy | established |
35159
| MD | | Potomac (HUC6) non-specific | 1976 |
02070000
| Potomac | established |
748439
| MD | Allegany | Potomac River. | 1998 |
02070003
| Cacapon-Town | established |
1672721
| MD | Charles | Nanjemoy, MD 20662, USA | 2019 |
02070011
| Lower Potomac | |
748451
| MD | Frederick | Monocacy River. | 1998 |
02070009
| Monocacy | established |
748386
| MD | Frederick | Potomac River. Frederick, Md. | 1998 |
02070008
| Middle Potomac-Catoctin | established |
1674510
| MD | Montgomery | Poolesville, MD 20837, USA | 2019 |
02070008
| Middle Potomac-Catoctin | |
748477
| MD | Montgomery | Potomac River, side channels on N side of Swainsons Island, ca. 0.5 miles downstream (E of) I-495 crossing, SW side of Bethesda | 2010 |
02070008
| Middle Potomac-Catoctin | established |
280393
| MD | Montgomery | Potomac River, side channels on N side of Swainsons Island, ca. 0.5 miles downstream (E of) I-495 crossing, SW side of Bethesda | 2010 |
02070008
| Middle Potomac-Catoctin | established |
157945
| MD | Washington | Chesapeake and Ohio Canal National Historical Park | 1999 |
02070004
| Conococheague-Opequon | established |
153424
| VA | | North Fork Shenandoah River | 1994 |
02070006
| North Fork Shenandoah | established |
269357
| VA | | Potomac (HUC6) non-specific | 1986 |
02070000
| Potomac | established |
45280
| VA | | Potomac (HUC6) non-specific | 1994 |
02070000
| Potomac | established |
153421
| VA | | Shenandoah River | 1994 |
02070007
| Shenandoah | established |
153422
| VA | | South Fork Shenandoah drainage | 1994 |
02070005
| South Fork Shenandoah | established |
153419
| VA | Fairfax | Potomac drainage | 1994 |
02070010
| Middle Potomac-Anacostia-Occoquan | established |
153420
| VA | Loudoun | Potomac drainage in Loudon County | 1994 |
02070008
| Middle Potomac-Catoctin | established |
153418
| VA | Stafford | Potomac River, Stafford Ccounty | 1994 |
02070011
| Lower Potomac | established |
46695
| WV | | Potomac (HUC6) non-specific | 1993 |
02070000
| Potomac | established |