RIDEM Office of Water Resources

The Rhode Island Department of Environmental Management Office of Water Resources designates thirteen watersheds in the state of Rhode Island.

1. Blackstone River Basin

2. Woonasquatucket River Basin

3. Moshassuck River Basin

4. Pawtuxet River Basin

5. Greenwich Bay Basin

6. Hunt-Potowomut River Basin

7. Saugatucket River Basin

8. Wood-Pawcatuck River Basin

9. Coastal Waters

10. Barrington, Palmer, Warren River Basin

11. Narragansett Bay Basin

12. Providence-Seekonk River Basin

13. Thames River Basin

View RIDEM watershed map

source of map: RIDEM website (viewable maps) (exit ths site)