Specimen ID | State | County | Locality | Year |
| Drainage name | Status |
1671448
| MD | Washington | [No locality description provided] | 2017 |
02070004
| Conococheague-Opequon | |
277171
| MD | Washington | Antietam Creek. | 2009 |
02070004
| Conococheague-Opequon | established |
877933
| MD | Washington | C & O Canal Towpath, near mile marker 112 | 2015 |
02070004
| Conococheague-Opequon | established |
157940
| MD | Washington | Chesapeake and Ohio Canal National Historical Park | 1999 |
02070004
| Conococheague-Opequon | established |
277066
| MD | Washington | Conococheague Creek, at Fairview. | 1993 |
02070004
| Conococheague-Opequon | established |
277177
| MD | Washington | Elks Run. | 2004 |
02070004
| Conococheague-Opequon | established |
277167
| MD | Washington | Green Spring Run. | 2008 |
02070004
| Conococheague-Opequon | established |
613817
| MD | Washington | Licking Creek | 1998 |
02070004
| Conococheague-Opequon | established |
277174
| MD | Washington | Little Antietam Creek. | 1995 |
02070004
| Conococheague-Opequon | established |
277165
| MD | Washington | Little Conococheague Creek. | 2004 |
02070004
| Conococheague-Opequon | established |
277169
| MD | Washington | Little Conococheague Creek. | 2004 |
02070004
| Conococheague-Opequon | established |
277166
| MD | Washington | Little Conococheague Creek. | 2007 |
02070004
| Conococheague-Opequon | established |
277172
| MD | Washington | Marsh Run | 1995 |
02070004
| Conococheague-Opequon | established |
277173
| MD | Washington | Marsh Run. | 2002 |
02070004
| Conococheague-Opequon | established |
277170
| MD | Washington | Meadow Brook. | 2009 |
02070004
| Conococheague-Opequon | established |
613809
| MD | Washington | Potomac River at Taylor's Landing, [at town of Mercersville], [ca. 10.2 air miles SSW center Hagerstown] | 1975 |
02070004
| Conococheague-Opequon | established |
276697
| MD | Washington | Potomac River, at Taylor's Landing (town of Mercersville). | 1975 |
02070004
| Conococheague-Opequon | established |
277175
| MD | Washington | Sharmans Branch. | 1995 |
02070004
| Conococheague-Opequon | established |
277176
| MD | Washington | Sharmans Branch. | 2003 |
02070004
| Conococheague-Opequon | established |