The Barrington River is a productive tidal river system in Rhode Island that serves as a vital estuary feeding Narragansett Bay. This approximately 4-mile-long waterway begins at Hundred Acre Cove and flows southeast to merge with the Warren River. It is characterized by strong tidal currents, extensive salt marshes, and a diverse ecosystem that supports a wide array of baitfish and predatory species. The river has historically been important for shellfishing and boating, though certain areas have faced water quality challenges. Its banks feature a mix of developed areas and protected marshlands, offering anglers a unique inshore fishing experience close to Providence.