Riggins Hot Springs
Riggins Hot Springs flows at 106 degrees Fahrenheit at just 1,899 feet elevation in Valley County, one of the lowest-elevation thermal features in Idaho. Its water carries 290 mg/L sulfate and 160 mg/L sodium, an unusually mineral-heavy profile that gives it a distinct character among Idaho's springs.
The spring emerges near the Salmon River corridor, where the canyon walls rise steeply from the water's edge. At under 2,000 feet, the climate is notably milder than Idaho's mountain springs, with average annual temperatures around 53 degrees and less extreme winters. Spring Bar Campground and the Salmon River boat ramp sit less than two miles away, and the sound of the river is a constant presence. Fruit-bearing trees shade portions of the riverside, hinting at the temperate microclimate.
A short walk of about 425 feet from the road reaches the spring. Spring Bar Campground, 1.7 miles away, offers 18 tent sites on a first-come basis along the Salmon River with a boat ramp. The area is popular with river runners and anglers. Summer temperatures in the canyon can exceed 100 degrees, while winters remain relatively mild by Idaho standards.
The Salmon River canyon exposes some of the oldest rock in Idaho, and the fault systems along this corridor provide pathways for deeply circulated thermal water. The high sulfate content, nearly 290 mg/L, suggests the water passes through sulfate-bearing rock formations before surfacing. The strongly alkaline pH of 9.4 and minimal calcium point to extended contact with silicate minerals at depth.
The water at Riggins Hot Springs is alkaline (pH 9.4). It is notably rich in sulfate (traditionally used for skin conditions and inflammation).
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A popular take-out point for floaters of the Salmon River, the Spring Bar Campground offers a boat launching ramp and 18 tent campsites. A table and fire ring are provided at all but two of the sites. Spring Bar is situated next to a relatively flat part of the Salmon River with the south end nestled in the shade of various fruit bearing trees. The surrounding area also provides for fishing, swimming, berry picking, and exploring. Wheelchair accessible picnic facilities are available at Allis...
Riggins Hot Springs is road-accessible, so you can bring more gear.
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