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
Middle Lake Hamilton Middle Lake Hamilton Middle Lake Hamilton, is a natural freshwater lake on the northeast edge of Winter Haven, Florida. At one point on the north shore the Winter Haven city limits touches the lake's shore. This lake has an surface area. Middle Lake Hamilton is between two other lakes with Hamilton in their names, Lake Hamilton (Florida) and Little Lake Hamilton. Ironically, Middle Lake Hamilton is considerably smaller than Little Lake Hamilton. Much of Middle Lake Hamilton's north and northwest shore is bordered by a residential area, which is partly inside Winter Haven. The northeast shore is bordered by woods.