# Bruneau Hot Spring, Idaho

Bruneau Hot Spring in Idaho. 106°F (41°C). Roadside. Elmore County.

- Page: https://www.soakingsprings.com/hot-springs/idaho/bruneau-hot-spring
- Source: Soaking Springs, researched and maintained by Armen Suny
- Updated: 2026-09-14

## Can you soak at Bruneau Hot Spring?

The water leaves the ground at 106°F, a comfortable soaking temperature. You can drive right up to it. We haven't confirmed whether it has a pool or charges a fee.

## Key facts

| Fact | Value |
|---|---|
| Source water temperature | 106°F (41°C) (USGS record; developed pools are often cooled) |
| pH | 8.6 (Alkaline) |
| Elevation | 2,625 ft |
| Access | Roadside, 101 ft from the nearest road (Hot Creek Road) |
| County | Elmore County |
| Nearest town | Mountain Home Air Force Base |
| Coordinates | 42.79800, -115.74200 |
| Best months to soak | January, December, February (largest gap between water and average air temperature) |

## About Bruneau Hot Spring

Bruneau Hot Spring sits a mile from Mountain Home Air Force Base in Elmore County, about as close to a town as any spring in this part of Idaho gets. The water measures in the mid 100s, soaking warm. Who owns the land and whether you can reach it are both blank on file, and no picture is on record. Hot Creek Road passes right beside it.

This is low desert. At around 2,600 feet the climate runs dry and mild, under a foot of snow in a year and about ten inches of rain. Summers are hot. The spring is roadside, a hundred feet or so off Hot Creek Road, so there is no walking involved, only the question of whether you are allowed to stop.

Winter tops the list, which fits a desert this high up where snow stays rare and the air cools off. No campground shows up nearby. The chemistry sample dates to 1989 and read mildly alkaline. Access has never been recorded, and with the base sitting a mile off, it is on you to learn who the landowner is first.

## Water chemistry

Lab sample from 1989-04-11 (Water Quality Portal).

| Measure | Value |
|---|---|
| pH | 8.6 |
| Calcium | 6.3 mg/L |
| Magnesium | 0.32 mg/L |
| Sodium | 56 mg/L |
| Sulfate | 16 mg/L |
| Chloride | 8.1 mg/L |

## Nearby

- Nearest city page: [Hot springs near Mountain Home Air Force Base](https://www.soakingsprings.com/hot-springs/near/idaho/mountain-home-air-force-base), 1 mi away
- State page: [Hot springs in Idaho](https://www.soakingsprings.com/hot-springs/idaho)
- [Bat Hot Spring, Pence Hot Spring, ID](https://www.soakingsprings.com/hot-springs/idaho/bat-hot-spring-pence-hot-spring): 117°F source, pH 8.2, TDS 243 mg/L, Short Walk, near Mountain Home Air Force Base, Elmore County
- [Buckaroo Hot Spring, ID](https://www.soakingsprings.com/hot-springs/idaho/buckaroo-hot-spring): 109°F source, pH 8.2, Roadside, near Mountain Home Air Force Base, Elmore County
- [Lower Indian Bathtub Hot Springs, ID](https://www.soakingsprings.com/hot-springs/idaho/lower-indian-bathtub-hot-springs): 108°F source, pH 8.7, Short Walk, near Mountain Home Air Force Base, Elmore County, primitive pools, pools 102°F, free, year-round
- [Indian Bathtub Hot Springs, ID](https://www.soakingsprings.com/hot-springs/idaho/indian-bathtub-hot-springs): 99°F source, pH 8.6, TDS 248 mg/L, Short Walk, near Mountain Home Air Force Base, Elmore County, primitive pools, pools 93–96°F, free
- [Hot Springs, ID](https://www.soakingsprings.com/hot-springs/idaho/hot-springs-elmore-county): 158°F source, pH 9.4, TDS 286 mg/L, Short Walk, near Mountain Home, Elmore County
- [Coyote Hot Spring, ID](https://www.soakingsprings.com/hot-springs/idaho/coyote-hot-spring): 135°F source, TDS 250 mg/L, Roadside, near Glenns Ferry, Elmore County, primitive pools, pools 100–104°F, free, may–oct

## Questions

**What is the water temperature at Bruneau Hot Spring?**
Bruneau Hot Spring has a water temperature of 106°F (41°C). This is considered a hot spring, well above body temperature.

**Where is Bruneau Hot Spring located?**
Bruneau Hot Spring is located in Elmore County, Idaho at 2,625 feet elevation, near Mountain Home Air Force Base. Coordinates: 42.7980°N, 115.7420°W.

**How do I get to Bruneau Hot Spring?**
Bruneau Hot Spring has Roadside road access, with the nearest road being Hot Creek Road (101 ft from the road).

**What minerals are in the water at Bruneau Hot Spring?**
Water chemistry analysis shows the presence of pH, Calcium, Magnesium, Sodium, Sulfate, Chloride. The pH is 8.6 (alkaline).

## Sources

- USGS thermal springs records, Water Quality Portal lab analyses, OpenStreetMap, Wikipedia/Wikidata, NOAA climate normals