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) is a caldera lake
in the western United States
, located in south-central Oregon
. It is the main feature of Crater Lake National Park
and is famous for its deep blue color and water clarity. The lake partly fills a nearly 2,148-foot (655 m)-deep caldera
that was formed around 7,700 (± 150) years ago
by the collapse of the volcano Mount Mazama
. There are no rivers flowing into or out of the lake; the evaporation is compensated for by rain and snowfall at a rate such that the total amount of water is replaced every 250 years. With a depth of 1,949 feet (594 m),
the lake is the deepest
in the United States. In the world, it ranks tenth for maximum depth, and third for mean (average) depth.
Crater Lake is also known for the "Old Man of the Lake
", a full-sized tree which is now a stump that has been bobbing vertically in the lake for over a century.
The low temperature of the water has slowed the decomposition of the wood, hence the longevity of the bobbing tree.
Two islands are in Crater Lake: Wizard Island
, formed from a cinder cone that erupted after Crater Lake began to fill with water, and the smaller Phantom Ship
, which has seven trees living on it. There are also colonies of violet-green swallows
and several varieties of wildflowers and lichens living there.
While having no indigenous fish population, the lake was stocked from 1888 to 1941 with a variety of fish. Several species have formed self-sustaining populations.
Since 2002, one of the state's regular-issue license plate designs
has featured Crater Lake.
The commemorative Oregon State Quarter
, which was released by the United States Mint
in 2005, features an image of Crater Lake
on its reverse.
The model is created at a scale of 1:50,000 with a vertical exaggeration of 1.75x. It features a built-in base, so it sits perfectly on a desk or in a frame.
Model Data Sources: USGS (Elevation)
, FSA (Imagery)