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Hot Creek Warm Spring emerges at 97°F within the Boise National Forest at 5,575 feet in Valley County, about a half-mile walk from Johnson Creek Road near McCall. The water maintains a 56-degree differential above ambient air in a high mountain basin that averages just 41°F annually and receives over 14 feet of snow each winter.
The spring feeds into Hot Creek through dense subalpine forest where lodgepole pine predominates and meadows open along the creek bottom. At this elevation, the growing season is short and wildflowers peak in July. The surrounding terrain rolls toward the Frank Church-River of No Return Wilderness boundary, and the sense of isolation is genuine despite the relative proximity to Johnson Creek Road. Morning fog often settles in the drainage, mixing with thermal steam from the spring.
History of Hot Creek Warm Spring
The spring's alkaline chemistry, with a pH of 8.7 and TDS of 252 mg/L, reflects deep circulation through the granitic Idaho Batholith before surfacing along fracture zones in this high drainage. Sodium dominates at 63 mg/L while calcium remains low at 3.2 mg/L, a signature pattern of geothermal water that has traveled far underground. The Johnson Creek drainage has served as an access corridor into the central Idaho wilderness since Forest Service trails were first cut in the early 1900s.
Johnson Creek Guard Station, a reservable 1922 cabin, sits 3.8 miles away and provides the nearest overnight option. The spring requires roughly a half-mile walk from the road. At 97°F, the water temperature is comfortable for extended soaking without needing to mix in cold water. Access via Johnson Creek Road is seasonal, typically open from early June through late September depending on snowpack.
Is Hot Creek Warm Spring worth visiting?
Best for
- Warm-water soaking
- Overnight camping trips
Hot Creek Warm Spring is well suited for warm-water soaking and overnight camping trips.
Annual Precip: 33.9 in
Annual Snow: 172.5 in
December
Air 22°F · Water 97°F · +75° contrast
January
Air 24°F · Water 97°F · +73° contrast
February
Air 25°F · Water 97°F · +72° contrast
December offers 44°F more contrast than August
Recent Temperature
95.0°F
(35.0°C)
Measured Sep 09, 1958
The water at Hot Creek Warm Spring is alkaline (pH 8.7) with 252 mg/L total dissolved solids.
pH influences mineral absorption through skin
Higher mineral concentration for therapeutic soaking
May support bone density and joint health
Supports circulation and skin hydration
Traditionally used for skin conditions and inflammation
Natural antiseptic with skin health benefits
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...
Reserve on Recreation.gov →
Swimsuit & towel
Water bottle
Stay hydrated, especially in hot water
Warm layers
Cold air before and after soaking
Camping gear
Nearby camping at Johnson Creek Guard Station
Trash bag
Pack out what you pack in
USGS Quad: CATON LAKE 7.5 · PP 492: 26.0 · NOAA: 2.0 · AMS Map: CHALLIS
What is the water temperature at Hot Creek Warm Spring?
Hot Creek Warm Spring has a water temperature of 97°F (36°C). This is a warm thermal spring.
Where is Hot Creek Warm Spring located?
Hot Creek Warm Spring is located in Valley County, Idaho at 5,575 feet elevation, near McCall. Coordinates: 44.9000°N, 115.5050°W.
How do I get to Hot Creek Warm Spring?
Hot Creek Warm Spring has Short Walk road access, with the nearest road being Johnson Creek Road (0.6 mi from the road).
Is Hot Creek Warm Spring free to visit?
Hot Creek Warm Spring has Open access. It is managed by US Forest Service.
Can I camp near Hot Creek Warm Spring?
Yes, Johnson Creek Guard Station is located nearby (2.4 miles away).
What minerals are in the water at Hot Creek Warm Spring?
Water chemistry analysis shows the presence of pH, Total Dissolved Solids, Calcium, Sodium, Sulfate, Chloride. The pH is 8.7 (alkaline). Total dissolved solids measure 252 mg/L.
Is it safe to soak at Hot Creek Warm Spring?
Hot Creek Warm Spring is generally safe for soaking at its recorded temperature. Always tell someone your plans before visiting remote hot springs.
Is Hot Creek Warm Spring crowded?
Hot Creek Warm Spring sees varying levels of visitors depending on the season and day of the week.
What should I bring to Hot Creek Warm Spring?
Essentials for Hot Creek Warm Spring: swimsuit, towel, water bottle, warm layers for before and after soaking, camping gear, a trash bag to pack out what you pack in.