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.
History of Bradfield Canal Hot Springs
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
Bradfield Canal Hot Springs rewards those willing to make the trek with a more secluded soaking experience.
Annual Precip: 137.2 in
Annual Snow: 552.7 in
January
Air 27°F · Water 135°F · +108° contrast
February
Air 28°F · Water 135°F · +107° contrast
December
Air 28°F · Water 135°F · +107° contrast
January offers 32°F more contrast than August
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...
Reserve on Recreation.gov →
Swimsuit & towel
Water bottle
Stay hydrated, especially in hot water
Sturdy footwear
Trail or off-road approach
Warm layers
Cold air before and after soaking
Camping gear
Nearby camping at Harding River Cabin
Trash bag
Pack out what you pack in
Water shoes
Hot ground near source
23 miles from Ketchikan, AK
USGS Quad: (BRADFIELD CANAL (A-4) 15) · NOAA: 2.0 · AMS Map: BRADFIELD CANAL
What is the water temperature at Bradfield Canal Hot Springs?
Bradfield Canal Hot Springs has a water temperature of 135°F (57°C). This is considered a hot spring, well above body temperature.
Where is Bradfield Canal Hot Springs located?
Bradfield Canal Hot Springs is located in Ketchikan Gateway Borough, Alaska at 485 feet elevation, near Ketchikan. Coordinates: 56.2330°N, 131.2670°W.
How do I get to Bradfield Canal Hot Springs?
Bradfield Canal Hot Springs has Backcountry road access (7.2 mi from the road).
Is Bradfield Canal Hot Springs free to visit?
Bradfield Canal Hot Springs has Open access. It is managed by US Forest Service.
Can I camp near Bradfield Canal Hot Springs?
Yes, Harding River Cabin is located nearby (13.5 miles away).
Is it safe to soak at Bradfield Canal Hot Springs?
At 135°F, Bradfield Canal 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 Bradfield Canal Hot Springs crowded?
Bradfield Canal Hot Springs requires a hike or off-road travel, which naturally limits crowds. You'll generally find fewer visitors on weekdays and outside peak season.
What should I bring to Bradfield Canal Hot Springs?
Essentials for Bradfield Canal Hot Springs: swimsuit, towel, water bottle, sturdy footwear for the approach, warm layers for before and after soaking, 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.