Kendall Warm Spring
Kendall Warm Spring emerges at 86 degrees with pH 7.8 and high sulfate content (650 mg/L) at 7,820 feet in Bridger National Forest. The spring sits 233 meters from Green River Lakes Road, running 50 degrees above the 36.1-degree ambient temperature.
The thermal feature occupies mountainous terrain where annual snowfall totals 158 inches and precipitation approaches 30 inches. The spring lies in upper Green River drainage amid conifer forest, with access via an improved forest road serving backcountry trailheads and recreational sites.
Visit mid-June through September when road conditions permit passenger vehicle access. The short walk from parking requires no technical skills. Whiskey Grove Campground, 3.1 kilometers away, provides reservable sites. Prepare for cold nights and afternoon thunderstorms typical at this elevation.
Named for Kendall, a nearby mining district active in the late 1800s. The area saw prospector activity during gold rushes but the spring itself avoided significant development, remaining in Forest Service management with multiple-use designation allowing regulated resource extraction.
The water at Kendall Warm Spring is slightly alkaline (pH 7.8). It is notably rich in calcium (may support bone density and joint health), magnesium (known for muscle relaxation and stress relief), and sulfate (traditionally used for skin conditions and inflammation).
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Kendall Warm Spring sits at 7,820 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 31% stronger than at sea level, so bring sunscreen and drink more water than you normally would.
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Kendall Warm 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 Kendall Warm Spring
More Springs Around 86°F
Slightly Alkaline Springs (pH ~7.8)
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