Lake Superior other Great Lakes fish, populations have also been affected by the accidental or intentional introduction of foreign species such as the sea lamprey and Eurasian ruffe. Accidental introductions have occurred in part by the removal of natural barriers to navigation between the Great Lakes. Overfishing has also been a factor in the decline of fish populations. Lake Superior Lake Superior (; ), the largest of the Great Lakes of North America, is also the world's largest freshwater lake by surface area, and the third largest freshwater lake by volume. The lake is shared by the Canadian province of Ontario to
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