Bull Shoals Lake is the last reservoir on the White River before it enters the Mississippi River. The other three are Beaver Lake, Table Rock Lake and Lake Taneycomo. Bull Shoals lake is controlled by the Army Corps of Engineers and has the primary purpose of flood control. The level of the lake changes regularly. The normal pool level elevation is 654 feet above sea level, which is locally known as 'powerpool'. However, the elevation changes between 630 and 680 feet.