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
River Lake (Winter Haven, Florida) River Lake (Winter Haven, Florida) River Lake is a Y-shaped natural freshwater lake on the southeast side of Winter Haven, Florida. It has a surface area. This lake is as much a swamp as a lake, since at least half the surface area is covered with swampy vegetation. On the north and west residences line the lake's shore. On the southwest is a wooded area and on the south is a grove of citrus trees. To the east is a swampy area. Just to the east of this is a natural freshwater pond. There is no public access to this