Baumgartner Hot Spring

Camas County, Idaho · Near Fairfield
43.6030°N, 115.0700°W · 4,980 ft
111°F 4,980 ft Open Roadside US Forest Service Camping nearby (0.8 mi)

Nine feet of ground separate Baumgartner Hot Spring from the road, and its own campground is under a mile off. Camas County, Idaho, 22 miles out of Fairfield, in the Sawtooth National Forest. The source runs hot, a notch past what you could sit in. The Forest Service holds the ground and access is open.

Location

As roadside as it gets, per the record. Elevation around five thousand feet. Snow piles up more than ten feet in a year, and average temperatures sit in the mid forties. The land unit is Sawtooth National Forest and the nearest road has no name attached. Camping is under a mile off at Baumgartner Campground, and the USGS logged a tiny flow here.

Winter months top the best-months list. Hot enough at the source to need care, though short of scalding. No fee is recorded. The campground next door makes a base. The chemistry on record is from 1981 and the water is alkaline. Whatever has been built around the spring, the record does not describe it.

Terrain

Aircraft with laser scanners measured this ground to within inches. The scan strips out trees and buildings, leaving the bare shape of the land around Baumgartner Hot Spring.

Aerial view of the ground around Baumgartner Hot Spring LiDAR bare-earth view of the same ground around Baumgartner Hot Spring
Aerial LiDAR bare earth

Drag the handle to compare the two views. The orange dot marks the spring, in a frame about three quarters of a mile wide.

Setting
Canyon floor
Steep ground climbs away on both sides of the spring.
Highest ground nearby
588 ft above the spring
Within a quarter mile, to the southwest
Cross-section through the spring

A slice through the ground from southwest to northeast, about 0.6 miles end to end.

Elevation data: USGS 3D Elevation Program. Aerial imagery: USGS The National Map. Public domain.

Heat Below
131 milliwatts per square meter of heat flow

That's about twice the US average of 65. It's higher than at 81% of the springs on this site.

Heat flow measures the warmth working its way up through the ground from deep inside the earth. Where it runs high, rain and snowmelt that seep down through cracks in the rock come back up hot.

Heat flow estimate: Stanford Thermal Earth Model (Aljubran & Horne, 2024), CC BY 4.0.

Monthly Climate
25°
Jan
27°
Feb
33°
Mar
39°
Apr
47°
May
59°
Jun
70°
Jul
69°
Aug
59°
Sep
44°
Oct
32°
Nov
22°
Dec
Annual Precip: 26.1 in Annual Snow: 122.6 in
Best Time to Visit
December Air 22°F · Water 111°F · +89° contrast
January Air 25°F · Water 111°F · +86° contrast
February Air 27°F · Water 111°F · +84° contrast
December offers 48°F more contrast than July
Current Conditions
SSE 2.3 mph
Today 71° Low 46° Sunny
Spring is +40° warmer
Wednesday 77° Low 51° Sunny
Spring is +34° warmer
Thursday 69° Low 46° Showers And Thunderstorms 78% precip
Spring is +42° warmer
Friday 70° Low 44° Mostly Sunny then Slight Chance Rain Showers 20% precip
Spring is +41° warmer
Saturday 73° Low 46° Sunny 5% precip
Spring is +38° warmer
Water Chemistry Sampled 1981-07-15

The water at Baumgartner Hot Spring is alkaline (pH 9.1).

pH 9.1 Alkaline
pH influences mineral absorption through skin
Calcium 4 mg/L
May support bone density and joint health
Magnesium 0 mg/L
Known for muscle relaxation and stress relief
Sodium 53 mg/L
Supports circulation and skin hydration
Sulfate 24 mg/L
Traditionally used for skin conditions and inflammation
Chloride 8 mg/L
Natural antiseptic with skin health benefits
Where to Stay

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Nearby Camping
Baumgartner Campground 0.8 mi away

Overview Baumgartner Campground is situated alongside the South Fork Boise River, 11 miles from Featherville, Idaho. The area offers excellent fishing, hiking and off-road vehicle riding opportunities. Baumgartner Hot Springs is located within the campground, where visitors can enjoy soaking in the pool while admiring the scenic, natural setting. Recreation The campground's main draw is Baumgartner Hot Springs. The 101-degree water is piped into a large concrete soaking pool. The pool...

Reservable Yes
Reserve on Recreation.gov →
Temperature
111°F
Warm Hot Boiling
Water Temp 111°F (44°C)
Avg Air Temp 44°F
Above Ambient +67°F
Great soaking conditions September
Access
Open
Road Access Roadside
Distance to Road 9 ft
Land
Ownership Federal
Agency US Forest Service
Designation National Forest
Unit Sawtooth National Forest
Manager US Forest Service
Protection 3 - Protected, subject to extractive use
Frequently Asked Questions
What is the water temperature at Baumgartner Hot Spring?
Baumgartner Hot Spring has a water temperature of 111°F (44°C). This is considered a hot spring, well above body temperature.
Where is Baumgartner Hot Spring located?
Baumgartner Hot Spring is located in Camas County, Idaho at 4,980 feet elevation, near Fairfield. Coordinates: 43.6030°N, 115.0700°W.
How do I get to Baumgartner Hot Spring?
Baumgartner Hot Spring has Roadside road access (9 ft from the road).
Is Baumgartner Hot Spring free to visit?
Baumgartner Hot Spring has Open access. It is managed by US Forest Service.
Can I camp near Baumgartner Hot Spring?
Yes, Baumgartner Campground is located nearby (0.8 miles away).
What minerals are in the water at Baumgartner Hot Spring?
Water chemistry analysis shows the presence of pH, Calcium, Magnesium, Sodium, Sulfate, Chloride. The pH is 9.1 (alkaline).
Is it safe to soak at Baumgartner Hot Spring?
With care. At 111°F Baumgartner Hot Spring is hot enough to need short sessions, fifteen to twenty minutes, and plenty of water. Enter slowly and get out if you feel light-headed.
Sources: USGS NWIS