Dagger Creek Hot Springs

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

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 Campground Hot Springs

Basin Creek Campground Hot Springs is a small set of rocky, user-built pools on Basin Creek off Highway 75 east of Stanley, Idaho — with one big asterisk: the campground it is named for was wiped out by flooding in 2006 and never rebuilt. The pools remain, with heavily silted bottoms and temperatures that fluctuate from too cool to piping hot, but plan on dispersed camping elsewhere along Highway 75.

Basin Creek Hot Springs

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

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

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

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

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.

Molly’s Tubs Hot Springs

Molly’s Tubs Hot Springs is a creekside rock pool in the Boise National Forest’s Warm Lake area — and despite the name, the tubs themselves are history. After years of overuse and abuse, the Forest Service dismantled and removed them; in their place are two shallow, seasonal natural pools where the tubs once sat.

Molly’s Toe Hot Springs

Molly’s Toe is a small, hot spring in the Boise National Forest northeast of Cascade, in the Warm Lake area and part of the Molly’s hot springs cluster. Keep expectations calibrated: with a partially collapsed rock wall and a light flow, this one is a foot soak at best — a curiosity on a Molly’s-area springs tour rather than a destination soak.