Specimen ID | State | County | Locality | Year |
| Drainage name | Status |
234313
| MD | Charles | Allens Fresh | 1962 |
02070011
| Lower Potomac | established |
234312
| MD | Charles | Allens Fresh | 1963 |
02070011
| Lower Potomac | established |
234311
| MD | Charles | Allens Fresh, near eastern end of two HWY bridges | 1962 |
02070011
| Lower Potomac | established |
234309
| MD | Charles | Allens Fresh, near eastern most of 2 Hwy bridges | 1963 |
02070011
| Lower Potomac | established |
1321826
| MD | Charles | Mallows Bay, Potomac River | 2016 |
02070011
| Lower Potomac | established |
228434
| MD | Charles | Port Tobacco River | 1969 |
02070011
| Lower Potomac | established |
228433
| MD | Charles | Potomac River, mouth of River to Mattawoman Creek. | 1963 |
02070011
| Lower Potomac | established |
234310
| MD | Charles | Wicomico River, near west Hatton point | 1957 |
02070011
| Lower Potomac | established |
228654
| MD | Prince George's/ | Potomac River, from Haines Point, District of Columbia, to Marshall Hall | 1984 |
02070011
| Lower Potomac | established |
234304
| MD | St. Mary's | Choptico Bay, S side, near jct with Wicomico River | 1962 |
02070011
| Lower Potomac | established |
234314
| MD | St. Mary's | Herring Creek, a cove, near Tall Timbers | 1962 |
02070011
| Lower Potomac | established |
234303
| MD | St. Mary's | Wicomico River, mouth of; St. Catherine's Sound | 1962 |
02070011
| Lower Potomac | established |
234302
| MD | St. Mary's | Wicomico River, S bank off second point above buoy C13 | 1962 |
02070011
| Lower Potomac | established |
878181
| VA | King George | King George County | 2015 |
02070011
| Lower Potomac | established |
1457706
| VA | King George | Western Mathias Point, along shore of Potomac River | 1991 |
02070011
| Lower Potomac | unknown |
213507
| VA | Stafford | Aquia Creek, tributary of Potomac River | 1960 |
02070011
| Lower Potomac | established |
229415
| VA | Stafford | Brent Marsh, along the western shore of Potomac River, 2 mi south of Widewater, abundant in deeper waters of the intertidal zone. | 1994 |
02070011
| Lower Potomac | established |
878180
| VA | Stafford | Stafford County | 2015 |
02070011
| Lower Potomac | established |
228431
| VA | Stafford/King G | Potomac River | 1983 |
02070011
| Lower Potomac | established |
261483
| VA | Westmoreland | Lower Machodoc Creek, tributary of Potomac River | 1960 |
02070011
| Lower Potomac | established |
887771
| VA | Westmoreland | Lower Machodoc Creek, tributary of Potomac River | 1978 |
02070011
| Lower Potomac | established |
887772
| VA | Westmoreland | Rosier Creek, off the Potomac River | 1978 |
02070011
| Lower Potomac | established |
878182
| VA | Westmoreland | Westmoreland County | 2015 |
02070011
| Lower Potomac | established |