# Unnamed thermal spring, Utah

Unnamed thermal spring in Utah. 72°F (22°C). Roadside. Millard County.

- Page: https://www.soakingsprings.com/hot-springs/utah/unnamed-spring-millard-county-3
- Source: Soaking Springs, researched and maintained by Armen Suny
- Updated: 2026-09-14

## Can you soak at this spring?

The water leaves the ground at 72°F, about as warm as a heated pool. 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 | 72°F (22°C) (USGS record; developed pools are often cooled) |
| pH | 6.8 (Neutral) |
| Total dissolved solids | 5,000 mg/L |
| Elevation | 4,761 ft |
| Access | Roadside, 87 ft from the nearest road (Hot Spring Road) |
| County | Millard County |
| Nearest town | Fillmore |
| Coordinates | 38.86900, -112.48400 |
| Best months to soak | January, December, February (largest gap between water and average air temperature) |
| Nearest campground | ADELAIDE CAMPGROUND, 9.9 mi |

## About Unnamed thermal spring

An unnamed thermal point in Millard County, about ten miles from Fillmore, sitting on Hot Spring Road. The water comes up tepid, low seventies. A 1985 sample found it salty and iron bearing, with dissolved solids several times what you would find in tap water. No name, no owner, no access status. The road name is the best clue to what is here.

You can nearly park on top of it. Hot Spring Road runs within ninety feet of the source. Elevation is a little under five thousand feet. Snowfall is about four feet a year and total moisture fifteen inches, a dry valley with cold winters. No land unit or designation appears on file and there is no photograph to show you what to expect.

December through February is the rated season. Adelaide Campground, about ten miles out, is the camping anyone has noted. Public access is unknown, so ask around about who holds the ground before you pull over. Iron and salt in the water will stain and will smell. That temperature reading dates to 1985.

## Water chemistry

Lab sample from 1985-09-27 (Water Quality Portal).

| Measure | Value |
|---|---|
| pH | 6.8 |
| Total dissolved solids | 5,000 mg/L |
| Calcium | 460 mg/L |
| Magnesium | 96 mg/L |
| Sodium | 1,000 mg/L |
| Sulfate | 1,100 mg/L |
| Chloride | 1,900 mg/L |
| Iron | 30 µg/L |

## Nearby

- Nearest city page: [Hot springs near Fillmore](https://www.soakingsprings.com/hot-springs/near/utah/fillmore), 1 mi away
- State page: [Hot springs in Utah](https://www.soakingsprings.com/hot-springs/utah)
- [Meadow Hot Springs, UT](https://www.soakingsprings.com/hot-springs/utah/meadow-hot-springs): 106°F source, pH 6.9, TDS 5,120 mg/L, Roadside, near Fillmore, Millard County
- [Hatton Hot Spring, UT](https://www.soakingsprings.com/hot-springs/utah/hatton-hot-spring): 100°F source, pH 7.1, Roadside, near Fillmore, Millard County
- [Richfield Warm Springs, UT](https://www.soakingsprings.com/hot-springs/utah/richfield-warm-springs): 73°F source, Roadside, near Richfield, Sevier County
- [Coyote Spring, UT](https://www.soakingsprings.com/hot-springs/utah/coyote-spring-2): 68°F source, pH 7.5, TDS 558 mg/L, Short Walk, near Milford, Beaver County
- [Sulphurdale, UT](https://www.soakingsprings.com/hot-springs/utah/sulphurdale): 72°F source, Short Walk, near Beaver, Beaver County
- [Springs, UT](https://www.soakingsprings.com/hot-springs/utah/springs-beaver-county): 68°F source, pH 7.5, TDS 558 mg/L, Short Walk, near Milford, Beaver County

## Questions

**What is the water temperature at ?**
 has a water temperature of 72°F (22°C). This is a warm thermal spring.

**Where is  located?**
 is located in Millard County, Utah at 4,761 feet elevation, near Fillmore. Coordinates: 38.8690°N, 112.4840°W.

**How do I get to ?**
 has Roadside road access, with the nearest road being Hot Spring Road (87 ft from the road).

**Can I camp near ?**
Yes, Adelaide Campground is located nearby (9.9 miles away).

**What minerals are in the water at ?**
Water chemistry analysis shows the presence of pH, Total Dissolved Solids, Calcium, Magnesium, Sodium, Sulfate, Chloride, Iron. The pH is 6.8 (neutral). Total dissolved solids measure 5,000 mg/L.

## Sources

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