Skip to main content
U.S. flag

An official website of the United States government

Boiling water at Hot Creek— The dangerous and dynamic thermal springs in California’s Long Valley Caldera

June 27, 2007

The beautiful blue pools and impressive boiling fountains along Hot Creek in east-central California have provided enjoyment to generations of visitors, but they have also been the cause of injury or death to some who disregarded warnings and fences. The springs and geysers in the stream bed and along its banks change location, temperature, and flow rates frequently and unpredictably. The hot springs and geysers of Hot Creek are visible signs of dynamic geologic processes in this volcanic region, where underground heat drives thermal spring activity.