Crater Lake National Park is located in southern Oregon in the United States established in 1902. The lake developed from the caldera of a destroyed volcano, Mount Mazama, some 7,700 years ago. It is known to be the deepest lake in the United States at 594 meters. Crater Lake has no streams flowing in and out of it. The water is naturally collected from rain and snow and melted ice from the surroundings through out the years.