Spring
This thermal spring emerges at 81°F in California's remote northeastern plateau near Alturas, positioned at 4,457 feet elevation where the landscape transitions to high-desert conditions. The water runs approximately 31 degrees warmer than the ambient air temperature, which averages a cool 50°F annually.
The spring sits in a landscape of sagebrush, scattered pines, and volcanic terrain characteristic of the Modoc Plateau. At this elevation, the environment feels distinctly different from lower California valleys—winters bring 44 inches of snow annually, and the dry climate delivers only 18 inches of precipitation yearly. The setting conveys the austere beauty of northeastern California's backcountry.
The Modoc Plateau forms part of California's volcanic heritage, built on lava flows dating back millions of years. This high-elevation thermal feature likely draws heat from deeper geothermal circulation through fractured volcanic rock. The region remained largely isolated historically, with limited settlement and continued low population density today.
The spring sits just 77 feet from the nearest road access, making it readily accessible during dry months. Winter conditions make visits problematic—substantial snow accumulation and cold temperatures dominate from November through April. Summer and early fall offer the most reliable visiting windows for this remote location.
Is Spring worth visiting?
Best for
- Warm-water soaking
- Easy day trips