The Quashnet River, also known as Quoshnet River or Moonakis River, is a 5.1-mile-long (8.2 km) estuary in Falmouth, Massachusetts on Cape Cod. Its area is about 1-square-mile (2.6 km2). The river is connected by ditch to John's Pond in Mashpee, just north of today's Route 28. It is fed by groundwater and flows south, gaining water as it goes, into Waquoit Bay which then flows into Nantucket Sound. During colonial times it was known for its abundant brook trout but was dammed in the mid-19th century for water power. After the mills burned and the dam was breached, the valley was converted to cranberry cultivation in the early 20th century. Cranberry production stopped in the 1950s, and the cranberry bogs were abandoned. The land was purchased by the Commonwealth of Massachusetts beginning