Frenchman's Bend Warm Springs
Frenchman’s Bend Hot Springs is located in Sawtooth National Forest near Ketchum, Idaho, with water temperatures ranging from 105°F to 140°F. Its mildly alkaline waters contain sodium and calcium, flowing through three natural rock pools beside Warm Springs Creek.

Frenchman's Bend Warm Springs Basic Information
Frenchman's Bend Warm Springs Pool Information
Frenchman's Bend Warm Springs Amenities & Facilities
Frenchman's Bend Warm Springs Additional Information
Frenchman's Bend Warm Springs Mineral Content
What to know about Frenchman's Bend Warm Springs
What is the location of Frenchman’s Bend Hot Springs?
The location of Frenchman’s Bend Hot Springs is in the Sawtooth National Forest, approximately 11 miles west of Ketchum, Idaho. The hot springs sit along Warm Springs Creek and are accessed via Warm Springs Road (Route 227). The last 7 miles of the route consist of a well-maintained gravel road. A small roadside pullout located about 500 feet from the pools provides limited parking. The site lies at geographic coordinates 43°38′28.6″N latitude and 114°29′14.3″W longitude.
What is the access type and cost of Frenchman’s Bend Hot Springs?
The access type of Frenchman’s Bend Hot Springs is public and primitive. The hot springs are open year-round and do not require advance booking. Visitors can enter free of charge. Pools generally remain open until sunset but are closed at night. Seasonal conditions such as snow or flooding may render the road inaccessible during winter or spring.
What are the pool types and number of pools at Frenchman’s Bend Hot Springs?
The pool types at Frenchman’s Bend Hot Springs are natural rock pools with rock-walled enclosures and gravel or sand bottoms. The total number of pools is three. One pool is located near the roadside, while the other two require visitors to wade across Warm Springs Creek. All pools are shallow in depth.
What is the temperature range of Frenchman’s Bend Hot Springs?
The temperature range of Frenchman’s Bend Hot Springs varies from 105°F to 140°F. Source temperatures measure between 124°F and 140°F. As water flows toward the creek, it cools to temperatures in the low 100s°F, depending on proximity to the river.
What is the mineral composition of Frenchman’s Bend Hot Springs?
The mineral composition of Frenchman’s Bend Hot Springs includes sodium at 69 mg/L, potassium at 1.90 mg/L, calcium at 2.1 mg/L, and magnesium at 0.03 mg/L. The pH level of the water is 9.1, indicating a mildly alkaline composition. These minerals are naturally present in the geothermal water discharged at the site.
What is the clothing policy and visitor suitability at Frenchman’s Bend Hot Springs?
The clothing policy at Frenchman’s Bend Hot Springs requires bathing suits. Nudity is not recommended. The site is kid-friendly but not pet-friendly. Families with children can safely enjoy the shallow pools, but visitors are advised not to bring animals.
What is the accessibility of Frenchman’s Bend Hot Springs?
The accessibility of Frenchman’s Bend Hot Springs varies by pool location and seasonal road conditions. One pool is easily accessible from the road, while the other two require wading across the creek. The gravel road leading to the site may become difficult or impassable during snow accumulation or high creek runoff, particularly in winter and spring.
What are the facilities and accommodations near Frenchman’s Bend Hot Springs?
The facilities at Frenchman’s Bend Hot Springs are nonexistent. There are no built structures, restrooms, or visitor amenities at the site. Accommodations are available in nearby Ketchum, Idaho, including campgrounds, lodges, and inns. Visitors should plan accordingly for a primitive outdoor experience.
What are the best seasons to visit Frenchman’s Bend Hot Springs?
The best seasons to visit Frenchman’s Bend Hot Springs are fall and the months between June and October. During these months, road access is more reliable, and weather conditions are favorable for outdoor soaking. Seasonal runoff and snow are less likely to impact travel.
What are the nearby attractions to Frenchman’s Bend Hot Springs?
The nearby attractions to Frenchman’s Bend Hot Springs include Sun Valley, Boise, Sunbeam Hot Springs, Boat Box Hot Springs, and Kirkham Hot Springs. Natural landmarks such as Craters of the Moon National Monument and Warm Springs Creek are also accessible. Local wildlife such as elk, moose, deer, squirrels, chipmunks, and snakes inhabit the surrounding area, along with a variety of native plant species.
What is the distance of Frenchman’s Bend Hot Springs from the nearest major city?
The distance of Frenchman’s Bend Hot Springs from the nearest major city is approximately 2.5 hours from Boise, Idaho. Boise serves as the closest urban hub for travelers seeking access to the hot springs.
Photo Gallery

Share Your Experience!
Have you visited Frenchman's Bend Warm Springs? Help other travelers by sharing your photos, tips, or updates about this hot spring.
Connect with Hot Springs Hub
Follow us for the latest hot springs discoveries, travel tips, and community updates.