Cronks Canyon Hot Spring

Custer County, Idaho · Near Challis
44.7200°N, 114.0160°W · 4,740 ft
115°F 73°F air · Good soaking weather 4,740 ft Open Short Walk Bureau of Land Management Camping nearby (15.5 mi)

Cronks Canyon Hot Spring sits beside the Salmon River Scenic Byway in Custer County, about 18 miles from Challis, on BLM land managed by the Challis Field Office. The water surfaces at 115, right at the line between hot and soaking warm. Access is open. The record includes a picture. Nothing on file says what the soaking arrangement looks like or whether there is one.

Location

A short walk of about 350 feet from the byway. The elevation is moderate and the climate dry with warm summers; snow totals run around five feet a winter, lighter than the forests further west. Iron Lake Campground, the closest listed, is about 15 miles off.

Midwinter carries the best-months tag. Five feet of snow along a highway corridor is usually manageable, though the byway itself is the thing to check in a storm. Water at 115 is soakable for most people with a little care. A 1980 sample put the water near neutral.

Monthly Climate
22°
Jan
25°
Feb
33°
Mar
40°
Apr
51°
May
62°
Jun
72°
Jul
71°
Aug
61°
Sep
46°
Oct
31°
Nov
20°
Dec
Annual Precip: 15.8 in Annual Snow: 59.4 in
Best Time to Visit
December Air 20°F · Water 115°F · +95° contrast
January Air 22°F · Water 115°F · +94° contrast
February Air 25°F · Water 115°F · +91° contrast
December offers 52°F more contrast than July
Current Conditions
73°F
Clear N 49.7 mph 36% Good soaking weather
This Afternoon 76° Low 45° Mostly Sunny
Spring is +39° warmer
Saturday 79° Low 49° Mostly Sunny
Spring is +36° warmer
Sunday 68° Low 40° Sunny 5% precip
Spring is +47° warmer
Monday 68° Low 39° Sunny
Spring is +47° warmer
Tuesday 72° Low 41° Sunny
Spring is +43° warmer
Water Chemistry Sampled 1980-08-05

The water at Cronks Canyon Hot Spring is slightly alkaline (pH 7.9).

pH 7.9 Slightly Alkaline
pH influences mineral absorption through skin
Calcium 9 mg/L
May support bone density and joint health
Magnesium 1 mg/L
Known for muscle relaxation and stress relief
Sodium 160 mg/L
Supports circulation and skin hydration
Sulfate 59 mg/L
Traditionally used for skin conditions and inflammation
Chloride 26 mg/L
Natural antiseptic with skin health benefits
Where to Stay

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Nearby Camping
Iron Lake Campground 15.5 mi away

Eight campsites with picnic tables and fire rings are along the shores of this high alpine lake. the campground has piped drinking water and vault toilets but no garbage services are available. The trail from campground leads to more lake fishing, at the Hat Lakes to the south. Carry-down access for non motorized boats to the lakes. The drive in along Salmon River Mountain Road, offers spectacular views of craggy peaks and deep pine forests.

Reserve on Recreation.gov →
Temperature
115°F
Warm Hot Boiling
Water Temp 115°F (46°C)
Avg Air Temp 45°F
Above Ambient +71°F
Great soaking conditions September
Access
Open
Road Access Short Walk
Nearest Road Salmon River Scenic Byway
Distance to Road 345 ft
Land
Ownership Federal
Agency Bureau of Land Management
Designation PUB
Unit Challis Field Office
Manager Bureau of Land Management
Protection 3 - Protected, subject to extractive use
Frequently Asked Questions
What is the water temperature at Cronks Canyon Hot Spring?
Cronks Canyon Hot Spring has a water temperature of 115°F (46°C). This is considered a hot spring, well above body temperature.
Where is Cronks Canyon Hot Spring located?
Cronks Canyon Hot Spring is located in Custer County, Idaho at 4,740 feet elevation, near Challis. Coordinates: 44.7200°N, 114.0160°W.
How do I get to Cronks Canyon Hot Spring?
Cronks Canyon Hot Spring has Short Walk road access, with the nearest road being Salmon River Scenic Byway (345 ft from the road).
Is Cronks Canyon Hot Spring free to visit?
Cronks Canyon Hot Spring has Open access. It is managed by Bureau of Land Management.
Can I camp near Cronks Canyon Hot Spring?
Yes, Iron Lake Campground is located nearby (15.5 miles away).
What minerals are in the water at Cronks Canyon Hot Spring?
Water chemistry analysis shows the presence of pH, Calcium, Magnesium, Sodium, Sulfate, Chloride. The pH is 7.9 (slightly alkaline).
Is it safe to soak at Cronks Canyon Hot Spring?
With care. At 115°F Cronks Canyon Hot Spring is hot enough to need short sessions, fifteen to twenty minutes, and plenty of water. Enter slowly and get out if you feel light-headed.
Sources: USGS NWIS