Big Soda Spring
Big Soda Spring bubbles forth at 90 degrees Fahrenheit near Soda Bay in Lake County, suggesting carbonated or mineral-rich water typical of California's volcanic mineral springs.
The spring sits 74 feet from Willow Road at 1,321 feet elevation, emerging in the volcanic landscape surrounding Clear Lake. The area receives nearly 26 inches of annual precipitation but only about 5 inches of snow, creating a relatively mild climate where the warm spring water remains year-round accessible.
Roadside access via Willow Road provides straightforward visitation near Soda Bay. The modest temperature and nearby development make this a lower-key thermal feature compared to hotter springs in the region. Letts Lake Campground, 33.7 kilometers away, offers first-come, first-served camping and swimming.
The spring's name suggests soda springs where carbon dioxide-rich groundwater creates distinctive mineral deposits. The location sits within the geologically active Clear Lake region, where volcanic activity has driven mineralization and thermal feature development throughout the landscape.
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The main feature of the area is a 35-acre lake for non-motorized vessels, trout fishing and swimming. A one-mile trail leads along the lake shore. There are accessible restrooms and a popular fully-accessible fishing pier.
Big Soda Spring is road-accessible, so you can bring more gear.
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