The Damariscotta River is a 19.0-mile-long (30.6 km) tidal river in Lincoln County, Maine, that empties into the Atlantic Ocean. Damariscotta is an old Abenaki word for "river of many fishes". There are 2,500-year-old oyster shell middens (heaps) along the banks of the Damariscotta River, which occupies a drowned river valley leading to the Gulf of Maine, a large embayment of the Atlantic Ocean.