Specimen ID | State | County | Locality | Year |
| Drainage name | Status |
1655009
| MD | Allegany | Allegany County, US-MD, US | 2020 |
02070002
| North Branch Potomac | established |
1654995
| MD | Anne Arundel | Anne Arundel County, MD, USA | 2020 |
02060003
| Gunpowder-Patapsco | established |
1654997
| MD | Anne Arundel | Odenton Natural Area, Odenton, MD, US | 2020 |
02060006
| Patuxent | established |
1654992
| MD | Anne Arundel | Pasadena, MD 21122, USA | 2020 |
02060004
| Severn | established |
1655002
| MD | Anne Arundel | St. John's College, Annapolis, MD, US | 2020 |
02060004
| Severn | established |
1655000
| MD | Baltimore | Cockeysville, MD, USA | 2020 |
02060003
| Gunpowder-Patapsco | established |
1654999
| MD | Baltimore | Lansdowne, MD, USA | 2020 |
02060003
| Gunpowder-Patapsco | established |
1654982
| MD | Calvert | Breeden Rd, Lusby, MD, US | 2020 |
02060006
| Patuxent | established |
1654989
| MD | Caroline | Caroline County, MD, USA | 2020 |
02060005
| Choptank | established |
1654988
| MD | Caroline | Federalsburg, MD 21632, USA | 2020 |
02080109
| Nanticoke | established |
1655004
| MD | Carroll | Piney Run Park, Sykesville, MD, US | 2020 |
02060003
| Gunpowder-Patapsco | established |
1655001
| MD | Carroll | Sykesville, MD, US | 2020 |
02060003
| Gunpowder-Patapsco | established |
1654976
| MD | Charles | Fenwick Rd, Bryans Road, MD, US | 2020 |
02070010
| Middle Potomac-Anacostia-Occoquan | established |
1654978
| MD | Charles | Nanjemoy, MD 20662, USA | 2020 |
02070011
| Lower Potomac | established |
1655003
| MD | Harford | Battery Island, Havre De Grace, MD, US | 2020 |
02060001
| Upper Chesapeake Bay | established |
1654987
| MD | Howard | Columbia | 2020 |
02060006
| Patuxent | established |
1655006
| MD | Howard | Ellicott City, MD 21042, USA | 2020 |
02060006
| Patuxent | established |
1654979
| MD | Montgomery | Gaithersburg, MD, USA | 2020 |
02070008
| Middle Potomac-Catoctin | established |
1655007
| MD | Montgomery | Takoma Park, MD 20901, USA | 2020 |
02070010
| Middle Potomac-Anacostia-Occoquan | established |
1654977
| MD | Prince George's | Piscataway Park, Accokeek, MD, US | 2020 |
02070010
| Middle Potomac-Anacostia-Occoquan | established |
1654984
| MD | Queen Anne's | Chino Farm Ln, Chestertown, MD, US | 2020 |
02060002
| Chester-Sassafras | established |
1654993
| MD | Queen Anne's | Terrapin Nature Park, Centreville, MD, US | 2020 |
02060002
| Chester-Sassafras | established |