Hartsel Hot Springs
Hartsel Hot Springs emerges at 126 degrees Fahrenheit at 8,954 feet elevation in Park County's South Park basin—one of Colorado's hottest springs when measured against surrounding air temperature, standing 90 degrees above ambient conditions.
A short walk of 574 feet from the nearest road leads through high-elevation sagebrush steppe and sparse grasses to where thermal water reaches the surface. The mountain setting at nearly 9,000 feet offers views across South Park toward the Mosquito Range, with winter snowfall averaging 46 inches annually across the remote high plain.
A short walk of 574 feet from the road provides ready access without technical hiking. Water exceeds 126 degrees Fahrenheit—dangerously hot. Small natural pools allow brief immersion after cooling slightly. Summer provides the only practical season; park roads close in winter. Fair-weather travel from Fairplay via unpaved routes required.
Hartsel Hot Springs' exceptional heat relative to ambient temperature suggests deep circulation through the crystalline basement rocks underlying South Park. The spring marks a significant geothermal anomaly in Colorado's high plateaus, indicating focused upflow along deep fault structures in the Rio Grande rift province.
The water at Hartsel Hot Springs is slightly acidic (pH 6.6). It is notably rich in calcium (may support bone density and joint health), sodium (supports circulation and skin hydration), and sulfate (traditionally used for skin conditions and inflammation).
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Overview Happy Meadows Campground is situated along the South Platte River near the Eleven Mile Reservoir and Eleven Mile Canyon. Excellent fishing, tubing, and hiking await visitors. Eleven Mile Canyon is rich in natural resources and historic significance. Originally called Granite Canyon, the towering gray walls rise 500 feet above the river.Recreation World-class trout fishing is a major attraction on the South Platte. Visitors can also venture to Florissant Fossil Beds to view fossils...
At 8,954 feet, Hartsel Hot Springs is in high-altitude territory where the air is noticeably thinner. Soaking in hot water accelerates dehydration and can amplify altitude effects like headache and fatigue. UV radiation is roughly 36% stronger here — wear sunscreen even on overcast days and take breaks from the water to rehydrate.
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Hartsel Hot Springs is road-accessible, so you can bring more gear. The water runs hot, so extra hydration is key. Cold air temperatures make a changing robe or warm layers essential.
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Springs Near Hartsel Hot Springs
More Springs Around 126°F
Slightly Acidic Springs (pH ~6.6)
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