Lake Superior (French: Lac Supérieur) is the largest of the five traditionally-demarcated Great Lakes of North America. It is bounded to the north by the Canadian province of Ontario and the U.S. state of Minnesota, and to the south by the U.S. states of Wisconsin and Michigan. It is the largest freshwater lake in the world by surface area if Lake Huron and Lake Michigan are considered to be two lakes. It is the world's third-largest freshwater lake by volume.

Lake Superior has a surface area of 31,820 square miles (82,413 km2), which is approximately the size of South Carolina. It has a maximum length of 350 miles (563 km) and maximum breadth of 160 miles (257 km). Its average depth is 482 feet (147 m) with a maximum depth of 1,332 feet (406 m). Lake Superior contains 2,900 cubic miles (12,100 km³) of water. There is enough water in Lake Superior to cover the entire land mass of North and South America with 1 foot (30 cm) of water. The shoreline of the lake stretches 2,726 miles (4,387 km) (including islands).

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