This thermal feature on eastern Baranof Island represents the same geothermal field as its neighbor to the south, emerging at 75 feet elevation 20 miles east of Sitka. The springs characterize the settlement of Baranof Warm Springs, a seasonal community sustained by these thermal resources in the isolated Alexander Archipelago.
The springs flow from Baranof Island's eastern slope into a landscape dominated by the Tongass National Forest. Water chemistry matches nearby springs with alkaline pH of 9.4 and total dissolved solids of 268 milligrams per liter, featuring sodium at 48 milligrams per liter and sulfate at 28 milligrams per liter. The combination of forest and coast creates a remote setting where the community clusters around thermal features.
History of Baranof Warm Springs, Alaska
The geothermal system reflects tectonic processes active throughout the Alexander Archipelago. The springs heated groundwater emerges through regional fault systems, supporting the settlement of Baranof Warm Springs which is occasionally referred to simply as Baranof. The location's thermal resources have sustained human activity in this remote corner of Southeast Alaska.
Accessible by boat only from Sitka, requiring several hours' travel across open water. The Baranof Lake Cabin provides nearby lodging accessed by floatplane. Best visited June through October during seasonal settlement activity and more stable weather. Winter travel is possible but weather-dependent and challenging.
Is Baranof Warm Springs, Alaska worth visiting?
Best for
- Backpacking adventures
- Overnight camping trips
Not ideal for
- Day trips with young children
Baranof Warm Springs, Alaska rewards those willing to make the trek with a more secluded soaking experience.
Annual Precip: 102.1 in
Annual Snow: 190.9 in
Recent Temperature
105.8°F
(41.0°C)
Measured Mar 23, 1972
The water at Baranof Warm Springs, Alaska is alkaline (pH 9.4) with 268 mg/L total dissolved solids.
pH influences mineral absorption through skin
Higher mineral concentration for therapeutic soaking
May support bone density and joint health
Known for muscle relaxation and stress relief
Supports circulation and skin hydration
Traditionally used for skin conditions and inflammation
Natural antiseptic with skin health benefits
Overview
Baranof Lake Cabin sits on the shores of greenish-blue Baranof Lake on the southwestern edge of Baranof Lake, 20 air miles east of of Sitka, Alaska. The cabin is generally available June through October, and makes an excellent base for experiencing this corner of Alaska.
This is a remote site. The cabin can be accessed by a 25-minute floatplane trip, weather permitting. In poor weather and low clouds, flying time can double, as flights must go the northern route around Baranof Islan...
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 Baranof Lake Cabin
Trash bag
Pack out what you pack in
Where is Baranof Warm Springs, Alaska located?
Baranof Warm Springs, Alaska is located in Sitka City and Borough, Alaska at 75 feet elevation, near Sitka. Coordinates: 57.0894°N, 134.8331°W.
How do I get to Baranof Warm Springs, Alaska?
Baranof Warm Springs, Alaska has Backcountry road access, with the nearest road being Old Mine Road (12.7 mi from the road).
Can I camp near Baranof Warm Springs, Alaska?
Yes, Baranof Lake Cabin is located nearby (2.8 miles away).
What minerals are in the water at Baranof Warm Springs, Alaska?
Water chemistry analysis shows the presence of pH, Total Dissolved Solids, Calcium, Magnesium, Sodium, Sulfate, Chloride. The pH is 9.4 (alkaline). Total dissolved solids measure 268 mg/L.
Is it safe to soak at Baranof Warm Springs, Alaska?
Baranof Warm Springs, Alaska is generally safe for soaking at its recorded temperature. Access may be on private land or unconfirmed — verify current conditions before visiting. Always tell someone your plans before visiting remote hot springs.
Is Baranof Warm Springs, Alaska crowded?
Baranof Warm Springs, Alaska 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 Baranof Warm Springs, Alaska?
Essentials for Baranof Warm Springs, Alaska: 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.