Mormon Ranch Warm Spring
Mormon Ranch Warm Spring is a Forest Service spring in Custer County, three miles by foot from the closest road and nearly forty miles from Challis. The name says warm and the survey note says hot, and no temperature was written down, so take the name lightly. The water, sampled decades ago, came back strongly alkaline. Salmon National Forest land, listed open to the public.
Mid-elevation mountain country, a bit over four thousand feet, with snowfall approaching eight feet in a typical winter and moderate precipitation. That much snow closes the approach for a long stretch of the year. The three-mile hike in is the defining fact of the place. No road name is on file. Nothing in the record describes the trail or the ground around the source.
No best months are listed, so go by the snow. Summer into early fall is the realistic window, and confirm with the forest before heading out. Overnight options on file come down to Yellowjacket Guard Station, some eleven miles distant. No fee appears in the record. Because the temperature is unrecorded, check the water carefully before getting near it. It might be a soak or it might be hotter than skin can take.
The water at Mormon Ranch Warm Spring is alkaline (pH 9.4).
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Overview Yellowjacket Guard Station is a historic Forest Service Ranger Station and Work Center. Originally constructed in 1925 and remodeled in 1934 by the Civilian Conservation Corps, the structure is eligible for listing on the National Register of Historic Places. Recreation Hikers, horseback riders, mountain bikers and off-road enthusiasts will find many trails in the surrounding area. Hunting is also a popular activity. Click here for an Idaho OHV safety messageFacilities The spacious...
Mormon Ranch Warm Spring is road-accessible, so you can bring more gear.
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Springs Near Mormon Ranch Warm Spring
Alkaline Springs (pH ~9.4)
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