Specimen ID | State | County | Locality | Year |
| Drainage name | Status |
35136
| MD | | Potomac River in Middle Potomac-Catoctin drainage | 1994 |
02070008
| Middle Potomac-Catoctin | established |
745282
| MD | Allegany | Sideling Hill Creek | 1998 |
02070003
| Cacapon-Town | unknown |
745277
| MD | Allegany | Sideling Hill Creek, Near Cumberland, Md | 1998 |
02070003
| Cacapon-Town | unknown |
745280
| MD | Frederick | Monocacy River, Thurmont, Md. | 1998 |
02070009
| Monocacy | unknown |
745272
| MD | Frederick | Potomac River. Frederick, Md. | 1998 |
02070008
| Middle Potomac-Catoctin | unknown |
745269
| MD | Montgomery | Potomac River, 0.7 mile reach from E end of Swainsons Island upstream to head of Plummers Island and I-495 bridge, SW edge of Bethesda | 2010 |
02070008
| Middle Potomac-Catoctin | unknown |
745275
| 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 | unknown |
745274
| MD | Montgomery | Potomac River, upstream and downstream ends of Plummers Island and Swainson Island area, just E of I-495 crossing, W side of Bethesda | 2010 |
02070008
| Middle Potomac-Catoctin | unknown |
280381
| MD | Montgomery | Potomac River, upstream and downstream ends of Plummers Island and Swainson Island area, just E of I-495 crossing, W side of Bethesda | 2010 |
02070008
| Middle Potomac-Catoctin | established |
157925
| MD | Washington | Chesapeake and Ohio Canal National Historical Park | 1999 |
02070004
| Conococheague-Opequon | established |
745281
| MD | Washington | Hagerstown, Md | 1998 |
02070004
| Conococheague-Opequon | unknown |
745279
| MD | Washington | Licking Creek | 1998 |
02070004
| Conococheague-Opequon | unknown |
745271
| MD | Washington | Side Ling Creek, Cumberland. Coordinates From Gps | 1997 |
02070003
| Cacapon-Town | unknown |