Sheep Creek Hot Spring
Sheep Creek Hot Spring reaches 136 degrees Fahrenheit at 6,590 feet in the Payette National Forest, requiring a 3.6-mile hike through genuine backcountry near McCall. The spring runs nearly 98 degrees above the local average air temperature of 38 degrees, one of the largest thermal differentials among Idaho's wilderness springs.
The trail climbs through subalpine forest in Valley County, where annual snowfall averages 163 inches and the landscape stays white well into summer. At the spring, hot water flows through a rocky clearing surrounded by conifers and high-elevation meadow. The air is thin and cold at this altitude, and steam hangs visibly over the source. The Frank Church-River of No Return Wilderness lies nearby, adding to the area's undeveloped character.
Plan for a full-day outing given the 3.6-mile hike each way and the elevation. Snow typically blocks access until late June or July. The source water is far too hot for direct contact — look for downstream pools where it cools to soaking temperature. Johnson Creek Guard Station, 13.6 km away, can be reserved for overnight stays.
This spring emerges along fault structures in the Idaho Batholith, where deeply circulating groundwater absorbs heat from cooling granitic rock. The Payette National Forest has administered this land since 1908, and the spring's difficult access has kept it free from development. The nearest historic structure is the Johnson Creek Guard Station, built in 1922 and still available as a rental cabin.
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Overview Johnson Creek Guard Station was built in 1922 and offers a charming mountain respite with modern conveniences. The cabin offers nearly everything needed for a pleasant and comfortable stay. Peak season for the cabin is typically early June through late September. It can be accessed by most vehicles via dirt and gravel roads, but trailers are not recommended.Recreation The cabin is near several trailheads into the Frank Church - River of No Return Wilderness. These non-motorized tr...
Sheep Creek Hot Spring sits at 6,590 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 26% stronger than at sea level, so bring sunscreen and drink more water than you normally would.
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Sheep Creek Hot Spring 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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