iDigBio.org
GBIF.org
iNaturalist.org
NANFA
FishNet 2
USGS NAS| HUC Code | Watershed Name | Occurrence | Source |
| 02050306 | Lower Susquehanna | Current | NatureServe |
| 02060001 | Upper Chesapeake Bay | Historic | NatureServe |
| 02060003 | Gunpowder-Patapsco | Historic | NatureServe |