Mark Twain Lake

Mark Twain Lake is a large reservoir (18,600 acres at normal pool) that lies in Monroe and Ralls counties. Construction of the Clarence Cannon Dam and power plant was completed in 1983. Row crops cover just over half of the land in Mark Twain Lake’s watershed and grass/pasture land covers slightly more than a quarter. This reservoir provides drinking water, electricity and flood control in addition to the usual recreational amenities.