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
Harveys Lake (Pennsylvania) Harveys Lake (Pennsylvania) Harveys Lake (also known as Harvey Lake or Harvey's Lake) is a natural lake in Luzerne County, Pennsylvania. It has a surface area of approximately 621.5 acres, or nearly a square mile. The lake is situated entirely within the borough of Harveys Lake. By volume, it is the largest natural lake in Pennsylvania, and by surface area, is the second-largest lake. It is a glacial lake surrounded by hills and is the source of Harveys Creek, a tributary of the Susquehanna River. The lake has a stone masonry dam. The lake's watershed has an area of approximately