Unnamed Hot Springs #4 (Middle Fork Boise River)
Seasonal
No pool; river-edge wading at low water only, usually late July to NovemberOpen seasons
- Access
- River ford (low water only)
- Accommodations
- National Forest campgrounds and primitive sites nearby
This unnamed hot spring in the Boise National Forest’s Atlanta area is a cliffside seep on the Middle Fork Boise River: hot water streaked with bright algae flows down a cliff face straight into the river, and there is no pool to soak in. The only way to enjoy it is the late-summer way — wade in at low water where the hot meets the cold, and possibly dig out a small pool of your own.
Pool Condition
There is no pool at this hot spring. The hot water, backed by streaks of bright algae, flows down a cliff into the river. Any soaking here is improvised at the river’s edge in late season.
Seasonal Notes
The majority of roads into Atlanta close during winter, save for one route that is sketchy at best most winters. Fording the river is only advised during low-water (late season) conditions, usually late July to November. In summer you can cut down drive time by taking one of the many Forest Service Roads off State Highway 21 to the Middle Fork Road — but note the Middle Fork Boise River Road itself is a rough, heavily washboarded drive.
Camping
Plenty of nearby National Forest campgrounds and primitive sites are available.
Unnamed Hot Springs #4 Soak Stats
- Access Type: River ford (low water only)
- Public Land: Boise National Forest
- Elevation: 3,650 ft
- Water Temperature: Not documented
- Water Clarity: n/a
- Visibility: High
- Odor(s): n/a
- Nearest Area: Atlanta (Middle Fork Boise River)
- Wildlife: Deer, elk, fox
- Usage Level: Low
Frequently Asked Questions
Is there actually a pool to soak in?
No. Hot water flows down a cliff face directly into the Middle Fork Boise River; the only soaking is improvised, wading at the river's edge where the hot and cold water mix at low water.
What does it cost?
The listing publishes no fee, and no official source states one, so treat the cost as not verified.
How hot is the water?
Not documented. The listing records no temperature for the seep, and the river mixing sets whatever warmth you feel.
When can you reach it?
Only at low water, usually late July to November, when fording the river is workable; most roads into Atlanta close in winter, and the one remaining route is rough.
How hard is the access?
Rough. The Middle Fork Boise River Road is heavily washboarded, and reaching the seep means fording the river at low water.
Can I camp nearby?
Yes. Plenty of National Forest campgrounds and primitive sites are nearby.
Discover more from IdahoHotSprings.com
Subscribe to get the latest posts sent to your email.
Join the Community on Facebook
Stay updated on seasonal road closures, wildfire impacts, soaking conditions and community preservation efforts across Idaho.
Follow Idaho Hot Springs on Facebook
