# Unnamed thermal spring, California

Unnamed thermal spring in California. 90°F (32°C). Short Walk · Public Land. San Bernardino County.

- Page: https://www.soakingsprings.com/hot-springs/california/unnamed-spring-san-bernardino-county
- 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 90°F, a comfortable soaking temperature. It's a short walk from the road. It's on US Forest Service land. We haven't confirmed whether it has a pool or charges a fee.

## Key facts

| Fact | Value |
|---|---|
| Source water temperature | 90°F (32°C) (USGS record; developed pools are often cooled) |
| Elevation | 2,279 ft |
| Access | Short Walk · Public Land, 0.9 mi from the nearest road (Santa Ana Truck Road) |
| Land | San Bernardino National Forest, US Forest Service |
| County | San Bernardino County |
| Nearest town | Mentone |
| Coordinates | 34.12400, -117.07800 |
| Best months to soak | December, January, February (largest gap between water and average air temperature) |
| Nearest campground | GREEN VALLEY, 8.4 mi |

## About Unnamed thermal spring

Nobody has named this thermal point, which sits on San Bernardino National Forest land five or so miles from Mentone. The water is warm, right at the edge of soaking temperature. It is not quite a mile from Santa Ana Truck Road, on Forest Service ground with open access. No name and no photo; the record is thin beyond the basics.

Dry foothills at about 2,300 feet, with light snow. Santa Ana Truck Road is the nearest road, nine tenths of a mile away. National Forest land with no further designation. Green Valley campground is around eight miles off, the closest camp in the record.

December through February is what the record lists. A short walk off the truck road. Camp at Green Valley. No fee on file. The Forest Service has it as open. Temperature is on the low side of soakable, so on a cold morning it may feel cooler than you want.

## Nearby

- Nearest city page: [Hot springs near Highland](https://www.soakingsprings.com/hot-springs/near/california/highland), 5 mi away
- State page: [Hot springs in California](https://www.soakingsprings.com/hot-springs/california)
- [Arrowhead Springs, Waterman Hot Spr, CA](https://www.soakingsprings.com/hot-springs/california/arrowhead-springs-waterman-hot-spr): 194°F source, Roadside, near Crestline, San Bernardino County
- [Highland Springs, CA](https://www.soakingsprings.com/hot-springs/california/highland-springs-1): 112°F source, Roadside, near Cherry Valley, Riverside County
- [Eden Hot Springs, CA](https://www.soakingsprings.com/hot-springs/california/eden-hot-springs): 109°F source, Roadside, near Lakeview, Riverside County
- [Warm Spring, Hot Spring, CA](https://www.soakingsprings.com/hot-springs/california/warm-spring-hot-spring): 108°F source, pH 8.2, TDS 352 mg/L, Short Walk, near Lake Arrowhead, San Bernardino County
- [Pan Hot Springs, CA](https://www.soakingsprings.com/hot-springs/california/pan-hot-springs): 88°F source, Short Walk, near Big Bear City, San Bernardino County
- [Unnamed thermal spring, CA](https://www.soakingsprings.com/hot-springs/california/unnamed-spring-riverside-county-2): Warm, Roadside, near Lakeview, Riverside County

## Questions

**What is the water temperature at ?**
 has a water temperature of 90°F (32°C). This is a warm thermal spring.

**Where is  located?**
 is located in San Bernardino County, California at 2,279 feet elevation, near Mentone. Coordinates: 34.1240°N, 117.0780°W.

**How do I get to ?**
 has Short Walk road access, with the nearest road being Santa Ana Truck Road (0.9 mi from the road).

**Is  free to visit?**
 has Open access. It is managed by US Forest Service.

**Can I camp near ?**
Yes, Green Valley is located nearby (8.4 miles away).

## Sources

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