Along the Shores of Great Bay Estuary
Located within the Gulf of Maine watershed, the Great Bay Estuary is a drowned river valley composed of high-energy tidal waters, deep channels and fringing mudflats. The entire estuary extends inland from the mouth of the Piscataqua River between Kittery, Maine, and New Castle, New Hampshire through Little Bay into Great Bay proper at Furber Strait, a distance of 12 miles (19 km). The Great Bay Estuary is a tidally-dominated system and is the drainage confluence of three major rivers, the Lamprey, Squamscott, and Winnicut. Four additional rivers flow into the system between Furber Strait and the open coast: the Cocheco, Salmon Falls, Bellamy, and Oyster rivers.