Androscoggin

River in north New Hampshire and southwest Maine; length 280 km/175 mi. The river rises in the White Mountains at Umbagog Lake. It joins the Kennebec River south of Augusta, Maine, to form Merrymeeting Bay to the northeast of Brunswick. The Androscoggin was a major industrial river in the 19th century; its flow provided power for mills and factories, some still operative, at Berlin, New Hampshire, and Bethel, Rumford, Livermore Falls, Lewiston-Auburn, Lisbon Falls, and Brunswick-Topsham in Maine.