Hydrological Unit: Severn
| HUC | Name |
|---|---|
| 0206000401 | Magothy River-Frontal Chesapeake Bay |
| 0206000402 | Severn River-Frontal Chesapeake Bay |
| 0206000403 | South River-Chesapeake Bay |
| 0206000404 | Herring Bay-Frontal Chesapeake Bay |
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