The Quashnet River flows south from Johns Pond in Mashpee, Massachusetts, and travels approximately 4¼ miles before emptying into Waquoit Bay. This small, groundwater-fed stream is primarily known for its excellent cold water fishery, particularly for wild native brook trout including sea-run varieties. The Quashnet's consistent groundwater supply provides stable water temperatures and flows year-round, making it a dependable fishing destination throughout the seasons. With its mostly undeveloped landscape, abandoned cranberry bogs, and regenerating forest, the river offers both a serene fishing experience and important habitat for various fish species. The Quashnet has been the focus of significant habitat improvement projects over the years and represents one of the best remaining sea-run brook trout streams in the eastern United States.