Narragansett Bay & Watersheds

Narragansett Bay, the largest estuary in New England, is the heart of the Narragansett Bay watershed.

By definition, a watershed is the land area that drains into rivers, streams, lakes or estuaries. Some 40% of the Narragansett Bay watershed is in Rhode Island, but over 60% of the watershed is actually in Massachusetts.

The map below outlines the major basins that make up the Narragansett Bay watershed.

Narragansett Bay Watershed Map, Major basins of the watershed

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