Bradfield Canal Hot Springs
Bradfield Canal Hot Springs emerge at 135 degrees Fahrenheit from an elevation of 485 feet within the Tongass National Forest. The springs produce thermal waters 93.3 degrees above ambient temperature in this remote fjord system where annual snowfall reaches 552.7 inches, creating one of Southeast Alaska's most snow-heavy environments.
The springs flow from mountainous terrain at the head of Bradfield Canal, creating steam visible across the fjord in the maritime climate where air temperatures average 41.7 degrees Fahrenheit. The elevation suggests the geothermal source reaches considerable depth. The surrounding landscape combines vertical canyon walls with dense forest, creating dramatic backdrop to the thermal feature emerging at water level or near-water locations.
The springs reflect tectonic activity along the Bradfield Canal system in Southeast Alaska. Regional fault systems and deep crustal heat drive the geothermal circulation beneath this remote fjord system in the heart of the Tongass.
Float plane or boat access only—more than 7 miles from the nearest road. The Harding River Cabin, 21.8 kilometers away, provides distant base camp. The fjord location offers scenic boat approach routes. Visit during summer for most stable conditions; winter access becomes significantly more challenging due to snow accumulation and storm patterns.
Is Bradfield Canal Hot Springs worth visiting?
Best for
- Hot spring soaking
- Backpacking adventures
- Overnight camping trips
Not ideal for
- Day trips with young children
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Overview Harding River Cabin is located in the Bradfield Canal near excellent fishing and crabbing spots. It is also in a prime spot for viewing birds and wildlife. The site can be accessed by float plane or boat, depending on conditions. Boats and planes should anchor in deeper water, and guests should take small skiffs or punts to the cabin. Guests are responsible for their own travel arrangements and safety, and must bring several of their own amenities.Recreation Anglers can fish in th...