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Lake Profile


General Information

Description Crater Lake is the deepest lake in the United States and the seventh deepest lake in the world.
Country United States of America
Latitude 42° 57' 0" (42.9500)
Longitude -122° 7' 0" (-122.1167)
State Oregon

Physical Characteristics

Description Crater Lake was created by the eruption and collapse of Mt. Mazama almost 7,000 years ago. Crater Lake is isolated from surrounding streams and rivers by the high sides of the caldera, so there are no inlets or outlets to the lake. Crater Lake is filled with rain and melted snow that fell within the caldera basin. It took approximately 250 years for the lake to fill to its current level.
Volume 17.50 km3
Surface Area 54.40 km2
Depth Mean depth: 457.0 m
Maximum depth: 594.0 m
Residence Time 4.9 years
Age 0 - 10,000 years before present
Origin Volcanic
Type Permanent
Catchment Catchment size: 65.00 km2
Catchment/surface area ratio: 1:1


Economic Value
Major Cities

Watershed Management


Biodiversity Conservation

Species of Concern



Crater Lake Data Clearinghouse
ILEC Database


8/14/2000 - Sonar survey opens up Crater Lake (USA)

Additional Data Sources

Birkett, C., and I. Mason. 1995. A new global lakes database for remote sensing programme studying climatically sensitive large lakes. Journal of Great Lakes Research, 21 (3) 307-318.
Herdendorf, C. 1982. Large lakes of the world. Journal of Great Lakes Research 8:379-412.
International Lake Environment Committee, the United Nations Environment Program and Environment Agency, Government of Japan. 1997. World Lakes Database.

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