The Moose River is an 83-mile-long (134 km) river in Maine. Its source (45°32′24″N70°41′46″W) is in Beattie (Maine Township 2, Range 8, WBKP), on the Canada – United States border, which runs along the height of land between the watersheds of the Kennebec River in Maine and the Chaudière River in Quebec. From there, the river runs east through Attean Pond and Wood Pond, past the town of Moose River, then through Long Pond and Brassua Lake.