At the springs in this collection, soaking without a swimsuit is accepted practice. Most are natural, undeveloped pools on public land where nude soaking has been the custom for decades. Etiquette matters more than rules here: be respectful of other soakers, ask before taking photos anywhere near the pools, and read each listing before you go, because customs can differ from spring to spring and can change over time.
Pete Creek Hot Springs is built around a sight worth the trip by itself: a hot waterfall pouring into the Middle Fork Boise River in the Atlanta area. The soak — small, user-built rock pools below the falls on the far side of the river — exists only seasonally, roughly August through October when the river runs low. On documented visits outside that window there were no pools at all, just the falls and a cold river crossing, so time this one carefully.
Ninemeyer Hot Springs is a late-season-only proposition on the far side of the Middle Fork Boise River: rocky, user-built pools with sand and rock bottoms that sit submerged or unreachable for most of the year. The access window is small — fording the river is only advised at low water, usually late July through November — and on multiple documented visits the pools were only ever seen steaming from the wrong side of a swollen river.
Loftus Hot Springs is a pair of user-built rock pools along the Middle Fork Boise River Road — famous, heavily used, and with a rough recent history: the pools were destroyed by vandals in 2011 and rebuilt by local soak seekers, in reduced form, later that year. The upper pool (102°F, mortar-reinforced) and lower pool (100°F) sit right off the washboard road between Boise and Atlanta, and usage here is extreme — this is a known party spot for hunters and ATVers, kegs and all. Two cautions from the listing itself: watch for broken glass in the pools, and poison ivy grows around them.
Granite Creek Hot Springs is a seasonal riverside soak right next to the Middle Fork Road in the Atlanta area — a set of rock-walled pools with sand, gravel, and rock bottoms at the edge of the Middle Fork Boise River. Finding the right spot can be tricky: there may or may not be a pool ready depending on when you visit, and the pools that exist swirl hot and cold water together, so a good soak takes a little work.
Roaring River Hot Springs — also known as Dutch Frank — is a sprawling geothermal complex where the Roaring River meets the Middle Fork Boise River in the Boise National Forest’s Mountain Home District. Heat emanates from multiple spots along the river, and roadside rock-walled pools appear wherever soakers have dug them. It’s a prospector’s soak: there may or may not be something worthwhile ready when you arrive, but the opportunity is everywhere.
Chattanooga Hot Springs is one of the finest natural soaks in the Atlanta area: a large, shallow, waterfall-fed pool beside the Middle Fork Boise River near the town of Atlanta, Idaho. The catch is timing — depending on how strong spring runoff runs, the pool can sit submerged in the river. Come late season, when the river drops, and this 102°F soak is tough to beat. Red spider mites have been reported here, so keep gear off the rocks.
Browns Creek Hot Springs hides on the far side of the Middle Fork Boise River in the Atlanta area — and the river is the gatekeeper. A deep, cold ford that should only be attempted at low water (usually August) guards a small set of shallow seasonal pools, a roughly 30-foot hot waterfall shower, and one secret two-person rock-and-mortar soaker tucked into a nook in the rocks, the only pool out of view of the road.
Atlanta Annex 1 & 2 are two undeveloped hot springs along the road near Atlanta, Idaho, sitting between three of the best soaks in the area — Atlanta, Chattanooga, and Powerplant. Each has a large pool with enough hot water flowing to support development, but they remain unbuilt, highly visible from the road, and frankly outclassed by their neighbors.
Atlanta Hot Springs is the hometown soak of Atlanta, Idaho: one large rock-and-mortar pool with benches and piped-in hot and cold water, in the Boise National Forest near the old mining town. It is wildly popular with locals — expect company, and expect it to be used hard. One caution is documented right on the listing: red spider mites inhabit this hot spring, so keep clothing and towels off the rocks.
Deadwood Hot Springs is a true jewel of the Boise National Forest: three pools — two small, one a large cliff-hanger soaker on a granite ledge above Warm Springs Creek — at the end of an approximately 3-mile hike from Deadwood Reservoir, northwest of Lowman, Idaho. The sources emerge through fissures all over a huge granite outcropping rising straight out of the creek.
Upper Loon Hot Springs is a complex of four separate hot spring sources strung along the Loon Creek Trail in the Frank Church–River of No Return Wilderness, passed in consecutive order as you trek up Loon Creek toward Warm Springs Creek. With everything from a two-person soaker to a 10–15 person pool fed by a hot waterfall, it’s one of the finest backpacking soaks in Idaho — reachable only in a short summer-to-fall window.
Tenmile Hot Springs is a set of user-built rock pools in the Boise National Forest in the Lowman area, in a grassy, picturesque setting with excellent camping and hiking around it. The honest catch is in the pools themselves: the water temperature is perfect, but the pools are mucky — loaded with silt and algae — and a good soak here takes patience and elbow grease.
Slate Creek Hot Springs — also known as Hoodoo Hot Springs — is a sunken wooden soaking box at the old Hoodoo Mines site in the White Cloud Mountains, in the Sawtooth National Recreation Area northeast of Stanley, Idaho. A short hike at the end of a bumpy, unpaved forest road (FSR 666) reaches one of the most characterful soaks in the Stanley area: a plumbed, drainable wooden box fed by a mine-shaft source.
Sacajawea Hot Springs is a seasonal batch of rock-walled pools on the banks of the South Fork of the Payette River, north of Lowman, Idaho, near the Sawtooth Lodge and the Grandjean trailhead into the Sawtooth National Recreation Area. Well known and easy to reach in the warm months, it is a soak that depends entirely on the river: the cold water is what keeps the pool temperatures in the usable range.
Owen Cabin Hot Springs is a historic hot spring site on Loon Creek in the Frank Church–River of No Return Wilderness, just beyond Upper Loon Hot Springs — and, honestly, a place to visit for the history and the meadow rather than the soak. Only the outlines of the old rock-walled pools remain where the spring’s outflow meets Loon Creek.
Lunchbreak Warm Springs is a medium-sized, lukewarm — not hot — soak on the far side of the Salmon River in the White Cloud Mountains, in the Sawtooth National Recreation Area near Stanley, Idaho. A single rock-walled pool, a sandy beach, and picnic facilities make it a favorite stop for river floaters on a hot summer day.
Elkhorn Hot Springs — better known to regulars as Boat Box — is an easy-access wooden soaking box right next to Highway 75 near Stanley, Idaho, in the Sawtooth National Forest. Fill the tub, temper it with buckets of cold Salmon River water, and settle into one of the most beloved roadside dips in the Stanley area — it’s usable all year.
Dagger Creek Hot Springs is a set of three rock-walled pools above the mouth of Dagger Creek, near Dagger Falls on the Middle Fork of the Salmon River in the Salmon-Challis National Forest. It is a beautiful corner of Idaho — but go in with calibrated expectations: the pools are silty, and the one documented visit was swarmed by biting horse and deer flies.
Bear Valley Hot Springs is a string of stellar soaking pools of all shapes and sizes along Bear Valley Creek in the Frank Church–River of No Return Wilderness, northwest of Lowman in the Boise National Forest. Reaching them takes a moderate hike and a river ford — and the reward is one of the highest-rated wilderness soaks in Idaho, fed by multiple sources in a spectacular backcountry setting.
Basin Creek Hot Springs — also known as Cove Hot Springs — is a cluster of rocky, user-built pools along the Salmon River east of Stanley, Idaho, a short hike from the Highway 75 parking area past Basin Creek Campground. It comes with an honest caveat up front: on repeated visits over the years these pools have been found semi-submerged and too cool to soak, so treat this one as a low-water gamble rather than a sure thing.
Vulcan Hot Springs is one of Idaho’s most unusual hot springs: a short hike through the Boise National Forest, in the Warm Lake area, reaches a source so strong that the US Department of Energy studied its geothermal potential for years. Its main pool was once reputedly the largest natural hot springs pool in Idaho — but a wildfire-era cave-in filled it with silt and sludge, and today, per the latest update, only one small pool remains soakable.
Trail Creek Hot Springs is a hugely popular pair of mortar-reinforced rock pools in the Boise National Forest northeast of Cascade, in the Warm Lake area. A short but steep hike from the highway pullout — across a man-made bridge over the creek — reaches two pools whose temperatures soakers fine-tune with creek water and a valved PVC feed. Expect company: usage here is extreme.
Teapot Hot Springs is a cluster of five to seven seasonal pools at the base of Teapot Mountain, wedged between the South Fork Salmon River and the forest road in the Warm Lake/Yellow Pine area. You’ll smell it before you see it — the sulfur odor is strong enough to notice while driving by — and only one pool is genuinely soakable, at about 107°F.
Penny Hot Springs is a small cluster of three springs in the Boise National Forest’s Warm Lake/Yellow Pine area. The main event is Penny #1 — “New Penny” — a rock- and sand-walled pool fed by a source marked by copper-colored algae, with two smaller siblings nearby: a one-person soaker downstream and Twopenny across the river.
