# Unnamed thermal spring, California

Unnamed thermal spring in California. 90°F (32°C). Roadside · Public Land. Lake County.

- Page: https://www.soakingsprings.com/hot-springs/california/unnamed-spring-lake-county-5
- 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. You can drive right up to it. 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 | 2,244 ft |
| Access | Roadside · Public Land, 262 ft from the nearest road (Twin Valley Road) |
| Land | Mendocino National Forest, US Forest Service |
| County | Lake County |
| Nearest town | Lucerne |
| Coordinates | 39.20000, -122.72500 |
| Best months to soak | December, January, February (largest gap between water and average air temperature) |
| Nearest campground | Letts Lake Campground, 7.1 mi |

## About Unnamed thermal spring

Mendocino National Forest holds this one, about nine miles from Lucerne in Lake County, a spring without a name and with water at ninety degrees. Warm enough for a soak on a cool day. The Forest Service has the land and the record marks it open. Twin Valley Road passes right by.

Twin Valley Road runs a few hundred feet away, so the record files this as roadside. The land designation is National Forest. Elevation is around twenty-two hundred feet. The forest here gets thirty-two inches of precipitation annually and about twenty inches of snow across a winter, enough to matter on a forest road.

Between December and February is the window on record. Letts Lake Campground is around seven miles away. No fee is recorded. The spring sits on open public land, and still there is no chemistry sample on file and no second name. Mind the forecast before driving forest roads in winter.

## Nearby

- Nearest city page: [Hot springs near Clearlake Oaks](https://www.soakingsprings.com/hot-springs/near/california/clearlake-oaks), 12 mi away
- State page: [Hot springs in California](https://www.soakingsprings.com/hot-springs/california)
- [Newman Springs, CA](https://www.soakingsprings.com/hot-springs/california/newman-springs): 94°F source, Short Walk, near Lucerne, Lake County
- [Bartlett Springs, CA](https://www.soakingsprings.com/hot-springs/california/bartlett-springs): 144°F source, Short Walk, near Lucerne, Lake County
- [Crabtree Hot Springs, CA](https://www.soakingsprings.com/hot-springs/california/crabtree-hot-springs): 106°F source, Short Walk, near Upper Lake, Lake County
- [Fouts Springs, CA](https://www.soakingsprings.com/hot-springs/california/fouts-springs): 79°F source, Short Walk, near Lucerne, Lake County
- [Pseudo Complexion Spring, CA](https://www.soakingsprings.com/hot-springs/california/pseudo-complexion-spring): 81°F source, Short Walk, near Clearlake Oaks, Lake County
- [Quigley Soda Spring, CA](https://www.soakingsprings.com/hot-springs/california/quigley-soda-spring): 82°F source, Short Walk, near Clearlake Oaks, Lake 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 Lake County, California at 2,244 feet elevation, near Lucerne. Coordinates: 39.2000°N, 122.7250°W.

**How do I get to ?**
 has Roadside road access, with the nearest road being Twin Valley Road (262 ft from the road).

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

**Can I camp near ?**
Yes, Letts Lake Campground is located nearby (7.1 miles away).

## Sources

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