ECOSYSTEMS > INLAND OREGON > LAKES AND PONDS

Some of the state’s lakes formed in the calderas of extinct or dormant volcanoes. As the volcanoes erupt, their mountain structure often collapses into a basin which, over time, fills with rainwater and creates these lakes.

​In Oregon, the best known of these is the aptly-named Crater Lake, a 1,932-foot (588.8 m) deep basin located in the caldera of ancient Mt. Mazama. Additional caldera lakes include East Lake, Paulina Lake, Blue Lake and the North and South Twin Lakes.

​See the maps below for directions to these locations.

Where Can I See a Caldera Lake in Oregon?

Crater Lake and Vicinity
GPS Coordinates: 42.9357621, -122.2759867

Blue Lake, Corbett State Park
GPS Coordinates: 44.415423, -121.762228

East Lake, Newberry Volcano National Monument
​GPS Coordinates: 43.7274192, -121.2294018

North and South Twin Lakes, Deschutes National Forest
​GPS Coordinates: 43.6680155, -121.8817638

Paulina Lake, Newberry Volcano National Monument
GPS Coordinates: 43.7192631, -121.2762727

Representative Species for Caldera Lakes:

​Suggested Activities for These Areas: