Hydrological Unit: Patapsco River-Frontal Chesapeake Bay
| HUC | Name |
|---|---|
| 020600031201 | Jones Falls |
| 020600031202 | Curtis Creek-Curtis Bay |
| 020600031203 | Northwest Harbor-Patapsco River |
| 020600031204 | Patapsco River-Frontal Chesapeake Bay |
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