Lake Superior
Surface area: 31,700 sq. miles (82,100 square kilometres)
Volume: 2,900 cubic miles (12,100 cubic kilometres)
Retention time: 191 years
Shoreline: 1,826 miles (2938 kilometres)
Maximum depth: 1,276 feet (389 metres)
Basin population: 425,548 United States and 181,573 Canada