The is a 25-mile-long in Maine that flows from Sebago Lake in Standish to Casco Bay in Portland. The name Presumpscot comes from a Native American word meaning "many falls" or "many rough places", referring to the numerous rapids and waterfalls along the river. The Presumpscot River has a rich history and cultural significance, as it was used by Native Americans for fishing and transportation, by European settlers for milling and trade, and by modern residents for recreation and conservation.