# Brooks Warm Spring, Montana

Brooks Warm Spring in Montana. 68°F (20°C). Short Walk. Fergus County.

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

## Can you soak at Brooks Warm Spring?

The water leaves the ground at 68°F, cooler than most swimming pools. It's a short walk from the road. We haven't confirmed whether it has a pool or charges a fee.

## Key facts

| Fact | Value |
|---|---|
| Source water temperature | 68°F (20°C) (USGS record; developed pools are often cooled) |
| pH | 7.4 (Slightly Alkaline) |
| Total dissolved solids | 659 mg/L |
| Elevation | 3,795 ft |
| Access | Short Walk, 0.6 mi from the nearest road |
| County | Fergus County |
| Nearest town | Lewistown |
| Coordinates | 47.21700, -109.47100 |
| Best months to soak | February, January, December (largest gap between water and average air temperature) |

## About Brooks Warm Spring

Brooks Warm Spring, in Fergus County, Montana, about eleven and a half miles from Lewistown. Barely warm. The USGS measured a fairly mineralized, iron-bearing water here in 1977, and the reading on file is below what anyone would sit in for heat. Neither owner nor access is recorded, and no campground is listed nearby. There is a photo.

A walk of a bit over half a mile from a road with no name attached in the record. The ground is central Montana plains elevation. Snowfall is about four and a half feet; rain is moderate. Land unit and land owner are both absent from the file, and so is any fee.

Winter is the season on file. Without a recorded owner or access class, assume the walk in crosses private ground and ask before you go. The water will not heat you, and the chemistry is from 1977. With no camping listed, plan to stay in Lewistown or bring your own arrangements.

## Water chemistry

Lab sample from 1977-06-29 (Water Quality Portal).

| Measure | Value |
|---|---|
| pH | 7.4 |
| Total dissolved solids | 659 mg/L |
| Calcium | 130 mg/L |
| Magnesium | 40 mg/L |
| Sodium | 3.6 mg/L |
| Sulfate | 330 mg/L |
| Chloride | 2.4 mg/L |
| Iron | 30 µg/L |

## Nearby

- Nearest city page: [Hot springs near Lewistown](https://www.soakingsprings.com/hot-springs/near/montana/lewistown), 0 mi away
- State page: [Hot springs in Montana](https://www.soakingsprings.com/hot-springs/montana)
- [Durfee Creek Springs, MT](https://www.soakingsprings.com/hot-springs/montana/durfee-creek-springs): 70°F source, TDS 2,670 mg/L, Hike, near Roundup, Musselshell County
- [Landusky Springs, MT](https://www.soakingsprings.com/hot-springs/montana/landusky-springs): 70°F source, pH 7.2, TDS 1,680 mg/L, Roadside, near Fort Belknap Agency, Blaine County
- [The (Landusky) Plunge, MT](https://www.soakingsprings.com/hot-springs/montana/the-landusky-plunge): 77°F source, TDS 954 mg/L, Short Walk, near Fort Belknap Agency, Blaine County
- [Lodgepole (Big Warm) Springs, MT](https://www.soakingsprings.com/hot-springs/montana/lodgepole-big-warm-springs): 79°F source, TDS 1,670 mg/L, Short Walk, near Fort Belknap Agency, Blaine County
- [Little Warm Springs, MT](https://www.soakingsprings.com/hot-springs/montana/little-warm-springs): 73°F source, pH 7.9, TDS 1,550 mg/L, Short Walk, near Fort Belknap Agency, Blaine County
- [White Sulphur Springs, MT](https://www.soakingsprings.com/hot-springs/montana/white-sulphur-springs): 136°F source, pH 6.9, Roadside, near White Sulphur Springs, Meagher County

## Questions

**What is the water temperature at Brooks Warm Spring?**
Brooks Warm Spring has a water temperature of 68°F (20°C). This is a warm thermal spring.

**Where is Brooks Warm Spring located?**
Brooks Warm Spring is located in Fergus County, Montana at 3,795 feet elevation, near Lewistown. Coordinates: 47.2170°N, 109.4710°W.

**How do I get to Brooks Warm Spring?**
Brooks Warm Spring has Short Walk road access (0.6 mi from the road).

**What minerals are in the water at Brooks Warm Spring?**
Water chemistry analysis shows the presence of pH, Total Dissolved Solids, Calcium, Magnesium, Sodium, Sulfate, Chloride, Iron. The pH is 7.4 (slightly alkaline). Total dissolved solids measure 659 mg/L.

## Sources

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