Specimen ID | State | County | Locality | Year |
| Drainage name | Status |
35113
| MD | | Potomac River | 1969 |
02070008
| Middle Potomac-Catoctin | established |
35206
| MD | | Youghiogheny River Reservoir | 1993 |
05020006
| Youghiogheny | established |
268198
| MD | | Ohio drainage of Appalachian Plateau (Youghiogheny drainage) | 1981 |
05020006
| Youghiogheny | established |
35109
| MD | | state non-specific | 1992 |
02000000
| Mid Atlantic Region | established |
268197
| MD | | Upper Chesapeake (HUC6) non-specific | 1981 |
02060000
| Upper Chesapeake | established |
35188
| MD | Allegany | Lake Habeeb | 1993 |
02070002
| North Branch Potomac | established |
35115
| MD | Allegany | Rocky Gap Lake [=Lake Habeeb] | 1969 |
02070002
| North Branch Potomac | collected |
35189
| MD | Baltimore | Liberty Lake | 1993 |
02060003
| Gunpowder-Patapsco | established |
35118
| MD | Baltimore | Loch Raven Reservoir | 1969 |
02060003
| Gunpowder-Patapsco | collected |
35116
| MD | Baltimore | Prettyboy Reservoir | 1969 |
02060003
| Gunpowder-Patapsco | collected |
35117
| MD | Baltimore/Carrol | Liberty Lake | 1969 |
02060003
| Gunpowder-Patapsco | collected |
613976
| MD | Cecil | Susquehanna-Atlantic Ocean Drainage: Canowingo Creek: Canowingo Lake Rd. ~ 10 km W rising Sun; 1st riffle upstream of mouth: 1.5 km from bridge (TJN07-22) | 2007 |
02050306
| Lower Susquehanna | established |
613975
| MD | Cecil | Susquehanna-Atlantic Ocean Drainage: Canowingo Creek: Canowingo Lake Rd. ~ 10 km W rising Sun; 1st riffle upstream of mouth: 1.5 km from bridge (TJN07-22) | 2007 |
02050306
| Lower Susquehanna | established |
1406554
| MD | Cecil | Susquehanna-Atlantic Ocean Drainage: Canowingo Creek: Canowingo Lake Rd. ~ 10 km W rising Sun; 1st riffle upstream of mouth: 1.5 km from bridge (TJN07-22) | 2007 |
02050306
| Lower Susquehanna | established |
35043
| MD | Garrett | Broadford Lake | 1993 |
05020006
| Youghiogheny | established |
35186
| MD | Garrett | Deep Creek Lake | 1993 |
05020006
| Youghiogheny | established |
35114
| MD | Garrett | Jennings Randolph Reservoir | 1969 |
02070002
| North Branch Potomac | collected |
35187
| MD | Garrett | Jennings Randolph Reservoir | 1993 |
02070002
| North Branch Potomac | established |
35112
| MD | Garrett | Savage River Reservoir | 1969 |
02070002
| North Branch Potomac | established |
35190
| MD | Garrett | Savage River Reservoir | 1993 |
02070002
| North Branch Potomac | established |
1678825
| MD | Harford | [No locality description provided] | 2020 |
02050306
| Lower Susquehanna | |
35201
| MD | Howard | Tridelphia Reservoir on the Patuxent River | 1993 |
02060006
| Patuxent | established |
35191
| MD | Prince George's | T. Howard Duckett Reservoir (Rocky Gorge Reservoir) on the Patuxent River | 1993 |
02060006
| Patuxent | established |
157941
| MD | Washington | Chesapeake and Ohio Canal National Historical Park | 1999 |
02070004
| Conococheague-Opequon | established |