Specimen ID | State | County | Locality | Year |
| Drainage name | Status |
255
| MD | Baltimore | Baltimore | 1927 |
02060003
| Gunpowder-Patapsco | failed |
1728440
| MD | Harford | [No locality description provided] | 2023 |
02060003
| Gunpowder-Patapsco | |
1748483
| MD | Montgomery | [No locality description provided] | 2019 |
02070010
| Middle Potomac-Anacostia-Occoquan | |
1751667
| MD | Montgomery | [No locality description provided] | 2019 |
02070010
| Middle Potomac-Anacostia-Occoquan | |
1751358
| MD | Worcester | [No locality description provided] | 2024 |
02040303
| Chincoteague | |