Isle Royale in Lake Superior is a large island national park in the US. Lake Superior has fresh water.
Michigan, with Isle Royale National Park, an island situated in Lake Superior and is over 45 miles in length.
Lake Eildon National Park was created in 1957.
Lake Gairdner National Park was created in 1991.
Blue Lake National Park was created in 1962.
Lake Bindegolly National Park was created in 1991.
Lake Eyre National Park was created in 1985.
Wallaga Lake National Park was created in 1972.
The various features of the Taupo Volcanic Zone are at the centre of the North Island. These include Lake Taupo, and the mountains of the Tongariro National Park. This was the fourth National Park formed in the World, in 1886.
According to Wikipedia, the deepest lake in New Zealand is Lake Hauroko in Fiordland National Park at the south end of the South Island, 463 meters deep (1,519 feet).
Crater Lake National Park.
The area of Lake Eyre National Park is 13,492.51 square kilometers.