Specimen ID | State | County | Locality | Year |
| Drainage name | Status |
1655040
| MD | Anne Arundel | Gambrills, MD 21054, USA | 2020 |
02060006
| Patuxent | established |
1655043
| MD | Anne Arundel | Severn, MD, USA | 2020 |
02060003
| Gunpowder-Patapsco | established |
1655042
| MD | Baltimore | MD-43 E, Rosedale, MD, US | 2020 |
02060003
| Gunpowder-Patapsco | established |
1655013
| MD | Caroline | 4, Preston, MD, USA | 2020 |
02060005
| Choptank | established |
1655037
| MD | Caroline | Denton, MD 21629, USA | 2020 |
02060005
| Choptank | established |
1655026
| MD | Montgomery | Gaithersburg, MD, USA | 2020 |
02070008
| Middle Potomac-Catoctin | established |
1655039
| MD | Montgomery | Potomac, MD, USA | 2020 |
02070008
| Middle Potomac-Catoctin | established |
1655020
| MD | Prince George's | Prince George's County, US-MD, US | 2020 |
02070010
| Middle Potomac-Anacostia-Occoquan | established |
1655024
| MD | Washington | Potomac River, Sharpsburg, MD, US | 2020 |
02070004
| Conococheague-Opequon | established |