Hydrological Unit: Upper Big Swamp
| HUC | Name |
|---|---|
| 030402030701 | Upper Tenmile Swamp |
| 030402030702 | Lower Tenmile Swamp |
| 030402030703 | Goodman Swamp |
| 030402030704 | Bryan Millpond-Black Swamp |
| 030402030705 | Lewis Mill Branch-Big Swamp |
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