Specimen ID | State | County | Locality | Year |
| Drainage name | Status |
1674870
| MD | Baltimore | Glen Arm | 2020 |
02060003
| Gunpowder-Patapsco | |
1679980
| MD | Baltimore | Red Run, Owings Mills, MD, US | 2021 |
02060003
| Gunpowder-Patapsco | |
1679192
| MD | Carroll | Arrington Road | 2020 |
02060003
| Gunpowder-Patapsco | |
611976
| MD | Howard | Patapsco River, Ellicott City, Md. | 1998 |
02060003
| Gunpowder-Patapsco | established |
1678543
| MD | Howard | Patapsco Valley State Park, Elkridge, MD, US | 2019 |
02060003
| Gunpowder-Patapsco | |