Unnamed Thermal Spring
At 7,313 feet elevation, this 72-degree thermal spring near Mammoth Lakes flows just 45 meters from El Camino Sierra Road in harsh alpine terrain where winter temperatures plunge well below freezing. The 28-degree temperature gain above ambient becomes particularly significant in this extreme climate.
The spring emerges in high Sierra Nevada country where massive granite peaks dominate the landscape. Cold alpine air descends from surrounding ridges, creating stark contrast with the warm thermal water rising from rocky ground. Dense lodgepole pine and whitebark pine scatter across volcanic terrain below jagged summits.
Access is straightforward from nearby El Camino Sierra Road with minimal hiking. Winter snows exceeding 98 inches annually make November through April a serious backcountry challenge requiring proper winter gear. Summer and early fall provide ideal conditions for thermal soaking with alpine scenery.
This spring flows on lands managed by the Los Angeles Department of Water and Power, reflecting the Los Angeles Aqueduct system that diverts Eastern Sierra water to distant urban users. The spring's geothermal origin traces to ancient volcanic activity along the Sierra's eastern escarpment, where ongoing tectonic stress maintains thermal conditions.
The water at This spring is slightly alkaline (pH 7.5) with 1100 mg/L total dissolved solids. It is notably rich in sodium (supports circulation and skin hydration), chloride (natural antiseptic with skin health benefits), and total dissolved solids (higher mineral concentration for therapeutic soaking).
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Overview Sherwin Creek Campground is located in the eastern Sierra Nevada Mountains within 2 miles of the full-service community of Mammoth Lakes, California. Popular among anglers, hikers, off-road vehicle enthusiasts and photographers, the campground is near some of the most spectacular wilderness and outdoor recreation areas in the Sierras.Recreation With a motocross track and trails, Sherwin Creek is a hot spot for off-road vehicle enthusiasts. The area's majestic scenery and challenging...
this spring sits at 7,313 feet above sea level, way above the mile-high mark. You may not feel the altitude strongly, but hot water still dehydrates you faster at elevation. UV is about 29% stronger than at sea level, so bring sunscreen and drink more water than you normally would.
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this spring is road-accessible, so you can bring more gear. Cold air temperatures make a changing robe or warm layers essential.
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Springs Near This Spring
More Springs Around 72°F
Slightly Alkaline Springs (pH ~7.5)
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