Specimen ID | State | County | Locality | Year |
| Drainage name | Status |
35157
| MD | | Blue Ridge, ridge and valley, Great Valley | 1976 |
02070009
| Monocacy | established |
35155
| MD | | Chesapeake Bay drainage | 1976 |
02060000
| Upper Chesapeake | established |
35156
| MD | | Potomac (HUC6) non-specific | 1976 |
02070000
| Potomac | established |
35211
| MD | | South Branch Bear Creek at confluence w/ North Branch, Garrett County, Youghiogheny drainage | 1977 |
05020006
| Youghiogheny | collected |
1674290
| MD | Carroll | [No locality description provided] | 2020 |
02060003
| Gunpowder-Patapsco | |
268177
| MD | Frederick | Western Maryland, drainages in the Piedmont and Blue Ridge regions | 1981 |
02070009
| Monocacy | established |
157929
| MD | Washington | Chesapeake and Ohio Canal National Historical Park | 1999 |
02070004
| Conococheague-Opequon | established |