Lake Superior the Soo Locks. Lake Superior is the largest freshwater lake in the world in area (if Lakes Michigan and Huron are taken separately; "see Lake Michigan–Huron"), and the third largest in volume, behind Lake Baikal in Siberia and Lake Tanganyika in East Africa. The Caspian Sea, while larger than Lake Superior in both surface area and volume, is brackish; though presently isolated, prehistorically the Caspian has been repeatedly connected to and isolated from the Mediterranean via the Black Sea. Lake Superior has a surface area of , which is approximately the size of South Carolina or Austria. It has a
Lake of the Ozarks Gravois Mills, Laurie, and Lakeview Heights. The Lake of the Ozarks has a storage capacity of approximately . When filled to that volume, it has a surface elevation of and occupies a surface area of approximately . The lake rarely varies in surface elevation by more than . As it was constructed for power generation, not flood control, the lake has only limited flood control capacity. Due to its large volume and surface area, various sources identify the Lake of the Ozarks as either the largest reservoir in Missouri or the second-largest after Truman Reservoir. In November 2018 the Lake