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| Crater Lake | |
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| Location | Klamath County, Oregon |
| Coordinates | 42°56′37″N 122°06′24″W / 42.94361°N 122.10667°WCoordinates: 42°56′37″N 122°06′24″W / 42.94361°N 122.10667°W |
| Lake type | crater lake |
| Primary inflows | precipitation and melted snow only |
| Primary outflows | evaporation and subsurface seepage only |
| Catchment area | 23.3 sq mi (60 km2) |
| Basin countries | United States |
| Max. length | 6 mi (9.7 km) |
| Max. width | 5 mi (8.0 km) |
| Surface area | 20.6 sq mi (53 km2) |
| Average depth | 1,148 ft (350 m) |
| Max. depth | 1,949 ft (594 m) |
| Water volume | 4.49 cu mi (18.7 km3) |
| Residence time | 157 years |
| Shore length1 | 21.8 mi (35.1 km) |
| Surface elevation | 6,178 ft (1,883 m) |
| Islands | Wizard Island Phantom Ship |
| 1 Shore length is not a well-defined measure. | |
Crater Lake is a caldera lake in the U.S. state of Oregon. It is the main attraction of Crater Lake National Park. It is famous for its blue color and clear water. The lake partly fills a nearly 2,148-foot (655-meter) deep caldera. The volcanic crater was formed by the collapse of the volcano, Mount Mazama, about 7,500 years ago. 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.
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