Springs & Geysers
Geysers and springs are premier water sources in Sonoma County. In the Mayacamas Mountains, located north of San Francisco, naturally occurring steam field reservoirs below the earth's surface produce stunning geysers, currently harnessed for county energy use. Springs in the county have historically fed mine production, as seen in the Sweetwater Springs image here. They have a checkered history in the North Bay, where they have been dammed to provide water and recreation for area residents.