Crater Lake

Oregons Crater Lake is the deepest lake in the United States.Best for scuba diving: Other lakes have shipwrecks or sunken towns but only Crater Lake offers the bragging rights of diving in a flooded volcano that also happens to be the deepest lake in the U.S. (and ninth deepest in the world). Without a deepsea submersible you wont be able to reach the absolute bottom (1943 feet). But theres plenty to explore in the crystalclear shallows: lava formations wildlife (trout and salmon) and underwater moss meadows.