Lake Chelan has a maximum depth of 1,486 feet (453 meters), making it the third deepest lake in the United States. The deepest part of the lake is located in the upper Lucerne basin and reaches as much as 436 feet (133 meters) below sea level. This remarkable depth is due to the lake being carved by glacial ice during previous ice ages, creating a deep and narrow basin. Lake Chelan's shape resembles a fjord and it is about 50.5 miles long with an average width of 1.3 miles. This information highlights that the lake is significantly deep, even deeper than the Great Lakes, and comparable to some of the deepest lakes in the world.
