Rangeley Lake, located in Franklin County, Maine, United States, is fed by several streams. Its waters flow out from the lake's northwestern corner via the short Rangeley River into Mooselookmeguntic Lake, then Upper and Lower Richardson Lakes, Umbagog Lake and ultimately into the Androscoggin River, Merrymeeting Bay, the lower Kennebec River, t…Rangeley Lake, located in Franklin County, Maine, United States, is fed by several streams. Its waters flow out from the lake's northwestern corner via the short Rangeley River into Mooselookmeguntic Lake, then Upper and Lower Richardson Lakes, Umbagog Lake and ultimately into the Androscoggin River, Merrymeeting Bay, the lower Kennebec River, the Gulf of Maine and the Atlantic Ocean.