Unnamed Thermal Spring
This unnamed warm spring emerges on the Cahuilla Reservation in Riverside County near Anza at 3,600 feet elevation, representing one of the few documented springs on tribal lands in Southern California. Recent measurements show 13.5 degrees Celsius water temperature.
The spring occupies tribal land within the Cahuilla Reservation at 3,600 feet elevation in terrain where the San Jacinto Mountains' southern slopes descend toward the Anza-Borrego region. Rolling foothills support oak woodland and chaparral vegetation. Annual precipitation reaches 15.6 inches with modest winter snowfall averaging 7 inches.
Public access status is unknown; contact Cahuilla tribal authorities before visiting. Oak Grove Campground on nearby Cleveland National Forest offers developed camping 17.7 kilometers away. The spring's location emphasizes importance of respecting tribal lands and confirming access permissions. Water chemistry is distinctive with elevated sodium levels.
The spring's presence on tribal lands reflects indigenous peoples' long history of utilizing geothermal resources in Southern California. The Cahuilla people have occupied this region for centuries, understanding and valuing thermal features as important cultural and practical resources. Federal recognition of tribal water rights provides framework for protection.
The water at This spring is alkaline (pH 9.7) with 224 mg/L total dissolved solids.
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Overview Located on the Cleveland National Forest, Oak Grove Campground is nestled in a valley of large oak groves and manzanita.Recreation Oak Grove Trail is a short walk of 1.5 miles and is located across Rt. 79, behind the Ranger Station. Oak Grove Trail is the oldest established trail on the Palomar Ranger District. Although a steep trail, it offers great views of the San Jacinto and San Gorgonio Mountains and the Oak Grove Valley as you gain elevation. The trail connects with the Oak Gr...
this spring is road-accessible, so you can bring more gear.
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Springs Near This Spring
Alkaline Springs (pH ~9.7)
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