Lake Superior is #2 - #1 Caspian Sea
I Belive it is lake superior... Lake superior is 31,820 Sqare Miles, Lake Erie is 9,940 square Miles.
31820 square miles
Lake Superior - Surface area: 31,700 square miles.
Maximum length is 350 miles Maximum width is 160 miles Surface area is 31,820 sq miles
Lake Superior, Lake Huron, Lake Michigan, Lake Erie, Lake Ontario. Largest to smallest: Lake Superior (82,400 km2) Lake Huron (59,600 km2) Lake Michigan (58,000 km2) Lake Erie (25,700 km2) Lake Ontario (19,500 km2)
The largest natural lake in the world measured in square miles is the Caspian Sea. It is 143,200 square miles and is located between Asia and Europe.
Lake Superior. Lake Superior - it is the largest lake in the Western Hemisphere in volume and the largest (true) lake in the world by size. Its size is 31,700 square miles and volume is 2,904 cubic miles.
Lake Superior has about 4,385 km of shoreline.
Length cannot be measured in square miles.
Surface area of 31,820 square miles.
With a water surface area of 31,700 square miles, Lake Superior is the largest of all the Great Lakes. Lake Erie has a water surface area of 9,910 square miles.