Rocky Canyon Hot Springs runs at 120 degrees Fahrenheit with a strong 0.78 cubic feet per second flow, making it one of the more voluminous springs along the Middle Fork Payette River corridor. The alkaline water carries 97 mg/L sodium and sits just 200 feet from Middle Fork Road in the Boise National Forest.
The spring emerges beside the Middle Fork Payette River at 3,400 feet in Valley County, where the canyon walls funnel the sound of moving water from both the river and the thermal source. Steam lifts off the creek-fed pools during cooler months, when the surrounding forest receives heavy snowfall averaging nearly nine feet annually. The air smells of minerals and damp pine. Rattlesnake Campground sits less than two miles south along the same road.
History of Rocky Canyon Hot Springs
The spring rises through fractured granite along the Idaho Batholith, a massive intrusive body underlying much of central Idaho. Its pH of 8.8 and sodium-dominant chemistry point to deep circulation through hot rock before surfacing. The Middle Fork Payette corridor hosts several thermal features, all linked to the same deep heat source that has attracted visitors since long before the road was built.
Rocky Canyon is roadside accessible off Middle Fork Road, about 13 miles north of Crouch. Source water at 120 degrees requires mixing with river water for comfortable soaking. The nearby Rattlesnake Campground is reservable and sits along the same road. Heavy snow limits winter access, though the road is sometimes plowed.
Is Rocky Canyon Hot Springs worth visiting?
Best for
- Hot spring soaking
- Easy day trips
- Overnight camping trips
Rocky Canyon Hot Springs offers an accessible hot spring experience — great for a day trip.
Annual Precip: 31.0 in
Annual Snow: 106.0 in
December
Air 26°F · Water 120°F · +94° contrast
January
Air 27°F · Water 120°F · +93° contrast
February
Air 31°F · Water 120°F · +89° contrast
December offers 47°F more contrast than July
Recent Temperature
120.2°F
(49.0°C)
Measured Aug 08, 1979
Discharge
0.78 ft³/s
Measured Oct 20, 1977
The water at Rocky Canyon Hot Springs is alkaline (pH 8.8).
pH influences mineral absorption through skin
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
Rattlesnake Campground is located 13 miles north of Crouch, Idaho along the Middle Fork Payette River at an elevation of 3621 feet.
The Middle Fork drainage offers a variety of excellent trails. Fishing and hunting are popular activities as well.
Recreation
The Middle Fork Payette River offers good to excellent fishing most of the year. Anglers cast for whitefish and rainbow trout.
Many trails for hiking, mountain biking, horseback and ATV riding can be found in the area. Th...
Reserve on Recreation.gov →
Swimsuit & towel
Water bottle
Stay hydrated, especially in hot water
Camping gear
Nearby camping at Rattlesnake
Trash bag
Pack out what you pack in
Water shoes
Hot ground near source
28 miles from Cascade, ID
USGS Quad: BOILING SPRINGS 15 · NOAA: 31.0 · AMS Map: CHALLIS
What is the water temperature at Rocky Canyon Hot Springs?
Rocky Canyon Hot Springs has a water temperature of 120°F (49°C). This is considered a hot spring, well above body temperature.
Where is Rocky Canyon Hot Springs located?
Rocky Canyon Hot Springs is located in Valley County, Idaho at 3,400 feet elevation, near Cascade. Coordinates: 44.2530°N, 115.8910°W.
How do I get to Rocky Canyon Hot Springs?
Rocky Canyon Hot Springs has Roadside road access, with the nearest road being Middle Fork Road (205 ft from the road).
Is Rocky Canyon Hot Springs free to visit?
Rocky Canyon Hot Springs has Open access. It is managed by US Forest Service.
Can I camp near Rocky Canyon Hot Springs?
Yes, Rattlesnake is located nearby (1.1 miles away).
What minerals are in the water at Rocky Canyon Hot Springs?
Water chemistry analysis shows the presence of pH, Calcium, Sodium, Sulfate, Chloride. The pH is 8.8 (alkaline).
Is it safe to soak at Rocky Canyon Hot Springs?
At 120°F, Rocky Canyon Hot Springs is hot enough to require caution. Enter slowly, limit soaking sessions to 15–20 minutes, and stay hydrated. Always tell someone your plans before visiting remote hot springs.
Is Rocky Canyon Hot Springs crowded?
Rocky Canyon Hot Springs is accessible from a paved road, making it easy to reach. Weekends and holidays may be busier — consider visiting on a weekday for a quieter experience.
What should I bring to Rocky Canyon Hot Springs?
Essentials for Rocky Canyon Hot Springs: swimsuit, towel, water bottle, camping gear, a trash bag to pack out what you pack in. The water is over 110°F — test the temperature before entering and watch for scalding near the source.