Lake Michigan is one of the five Great Lakes of North America and the only one located entirely within the United States. The other four Great Lakes are shared by the U.S. and Canada. It is the second-biggest of the Great Lakes by volume (1,180 cu mi or 4,900 km3) and the third-largest by surface area (22,404 sq mi or 58,030 km2), after Lake Superior and Lake Huron.