# Unnamed thermal spring, California

Unnamed thermal spring in California. 70°F (21°C). Roadside. Sonoma County.

- Page: https://www.soakingsprings.com/hot-springs/california/unnamed-spring-sonoma-county-2
- 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 70°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 | 70°F (21°C) (USGS record; developed pools are often cooled) |
| Elevation | 261 ft |
| Access | Roadside, 9 ft from the nearest road |
| County | Sonoma County |
| Nearest town | Eldridge |
| Coordinates | 38.35700, -122.50900 |
| Best months to soak | January, December, February (largest gap between water and average air temperature) |
| Nearest campground | OAK SHORES DAY USE AREA (CA), 20.4 mi |

## About Unnamed thermal spring

Another unnamed Sonoma County spring, this one right beside a road a mile and a half from Eldridge. The reading on record is 70 degrees, roughly air temperature on a spring afternoon, so think of it as a warm seep. A photo is attached, which is more than most unnamed points get. Ownership and access go unrecorded.

Roadside in the literal sense. The record puts the spring nine feet off the pavement, though it does not name the road. Low valley floor, a few hundred feet up, where winters bring a couple of feet of rain and summers bring none. Snow does not happen here. What surrounds the outlet goes undescribed anywhere on file, so the photo is your best guide to what you will see.

The listed best months run December through February. You can park and look without a walk. No owner is recorded, so keep to the road shoulder unless you learn otherwise. Camping is thin; the only site on file is Oak Shores, twenty miles away and day use by name. No fee is recorded. The water is too cool to count as a soak.

## Nearby

- Nearest city page: [Hot springs near Kenwood](https://www.soakingsprings.com/hot-springs/near/california/kenwood), 3 mi away
- State page: [Hot springs in California](https://www.soakingsprings.com/hot-springs/california)
- [Los Guilicos Warm Springs, CA](https://www.soakingsprings.com/hot-springs/california/los-guilicos-warm-springs): 88°F source, TDS 640 mg/L, Short Walk, near Kenwood, Sonoma County
- [Unnamed thermal spring, CA](https://www.soakingsprings.com/hot-springs/california/unnamed-spring-sonoma-county-1): 73°F source, TDS 640 mg/L, Short Walk, near Kenwood, Sonoma County
- [White Sulphur Springs (California), CA](https://www.soakingsprings.com/hot-springs/california/white-sulphur-springs-california): pH 8.7, TDS 750 mg/L, Roadside, near Saint Helena, Napa County
- [St Helena White Sulphur Spring, CA](https://www.soakingsprings.com/hot-springs/california/st-helena-white-sulphur-spring): 97°F source, pH 8.7, TDS 750 mg/L, Roadside, near Saint Helena, Napa County
- [Unnamed thermal spring, CA](https://www.soakingsprings.com/hot-springs/california/unnamed-spring-napa-county): 83°F source, Roadside, near Napa, Napa County
- [Napa Vichy Springs, CA](https://www.soakingsprings.com/hot-springs/california/napa-vichy-springs): 76°F source, Roadside, near Napa, Napa County

## Questions

**What is the water temperature at ?**
 has a water temperature of 70°F (21°C). This is a warm thermal spring.

**Where is  located?**
 is located in Sonoma County, California at 261 feet elevation, near Eldridge. Coordinates: 38.3570°N, 122.5090°W.

**How do I get to ?**
 has Roadside road access (9 ft from the road).

**Can I camp near ?**
Yes, Oak Shores Day Use Area (Ca) is located nearby (20.4 miles away).

## Sources

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