Specimen ID | State | County | Locality | Year |
| Drainage name | Status |
157933
| MD | Washington | Chesapeake and Ohio Canal National Historical Park | 1999 |
02070004
| Conococheague-Opequon | established |
611314
| MD | Washington | Hagerstown, Md | 1998 |
02070004
| Conococheague-Opequon | established |
611313
| MD | Washington | Licking Creek | 1998 |
02070004
| Conococheague-Opequon | established |
42415
| PA | | Conococheague-Opequon drainage of the Potomac | 1983 |
02070004
| Conococheague-Opequon | established |
611835
| PA | Franklin | Back Creek, Hagerstown | 1997 |
02070004
| Conococheague-Opequon | established |
153245
| VA | | Conococheague-Opequon drainage of the Potomac | 1994 |
02070004
| Conococheague-Opequon | established |
611829
| WV | Morgan | Middle Fork Sleepy Creek. | 1994 |
02070004
| Conococheague-Opequon | established |