Cameta Warm Spring
Cameta Warm Spring flows at 73°F from the Temblor Range in San Luis Obispo County at 1,621 feet elevation near Shandon. This roadside spring, located just 7 feet from access routes, produces water only 11°F above ambient temperature in a landscape receiving less than 10 inches of annual precipitation.
The spring emerges in the rain-shadow interior of San Luis Obispo County, where sparse desert scrub and scattered oak characterize the arid foothills. The modest thermal output provides a cool, subtle spring in stark contrast to dramatic Sierra thermal features. The setting presents wide-open vistas of rolling terrain, minimal vegetation cover, and the geological structures of the Temblor Range visible in surrounding hills.
Cameta Warm Spring's marginal geothermal character reflects its position in a transitional zone where crustal heat diminishes moving toward coastal regions. The water chemistry—including 95 mg/L sulfate and 58 mg/L calcium—indicates circulation through mineral-rich rock formations typical of the Temblor Range geology. The spring represents a modest manifestation of the region's broader geothermal potential.
Roadside access makes this spring easy to visit during explorations of San Luis Obispo County's interior. The arid climate means winter and spring offer the most pleasant conditions before summer heat arrives. The modest thermal output provides lukewarm bathing water ideal for cooling off on hot days rather than seeking warmth—a reversal of typical hot springs usage in California's warmer regions.
Is Cameta Warm Spring worth visiting?
Best for
- Easy day trips
- Overnight camping trips
The water at Cameta Warm Spring is neutral (pH 6.8). It is notably rich in magnesium (known for muscle relaxation and stress relief).
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