Specimen ID | State | County | Locality | Year |
| Drainage name | Status |
1529817
| MD | Howard | Centennial Lake | 1992 |
02060006
| Patuxent | established |
232122
| MD | Howard | Columbia, reservoirs in and around Columbia | 2000 |
02060006
| Patuxent | established |
232127
| MD | Howard | Patuxent River | 1994 |
02060006
| Patuxent | established |
232114
| MD | Howard | Patuxent River | 2000 |
02060006
| Patuxent | established |
228651
| MD | Prince George's | Creeks in upper portions of the Pautuxent River, near Patuxent River Park and Waysons Corner (USGS Quad Map 159) | 1993 |
02060006
| Patuxent | established |
1462741
| MD | Prince George's | Mataponi Creek, Merkle Wildlife Reserve, Patuxent River | 2015 |
02060006
| Patuxent | established |
1462725
| MD | Prince George's | Route 4, Patuxent River | 2015 |
02060006
| Patuxent | established |