# Unnamed thermal spring, California

Unnamed thermal spring in California. 73°F (23°C). Roadside. Solano County.

- Page: https://www.soakingsprings.com/hot-springs/california/unnamed-spring-solano-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 73°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 | 73°F (23°C) (USGS record; developed pools are often cooled) |
| Elevation | 218 ft |
| Access | Roadside, 225 ft from the nearest road (Lake Herman Road) |
| County | Solano County |
| Nearest town | Benicia |
| Coordinates | 38.10100, -122.16900 |
| Best months to soak | January, December, February (largest gap between water and average air temperature) |
| Nearest campground | Aquatic Park Cove, Black Point Overnight Anchoring, Sailing Vessels only (auxiliary engine OK), 24.5 mi |

## About Unnamed thermal spring

An unnamed thermal point a couple of miles from Benicia in Solano County, a short distance off Lake Herman Road. Tepid, low seventies. You would feel the warmth with a hand in it and little beyond that. There is no owner, unit or access status in the record, and so close to Benicia that you will want to ask around before you go.

Low ground at about 200 feet, mild, with modest rain and no snow. Lake Herman Road is a couple hundred feet off. No land manager listed. The only camp entry tied to this record is a sailing-vessel anchorage at Aquatic Park Cove, some twenty-five miles off, which is no use to anyone coming by car.

Winter is the listed best period; the climate is mild all year. Roadside from Lake Herman Road. No usable camping in our data. Tepid water, as noted. Access is unrecorded, so confirm before visiting. No fee is noted either, and no land agency has claimed the point.

## Nearby

- Nearest city page: [Hot springs near Benicia](https://www.soakingsprings.com/hot-springs/near/california/benicia-solano), 2 mi away
- State page: [Hot springs in California](https://www.soakingsprings.com/hot-springs/california)
- [Vallejo White Sulphur Springs, CA](https://www.soakingsprings.com/hot-springs/california/vallejo-white-sulphur-springs): 68°F source, Roadside, near Vallejo, Solano County
- [Sulphur Spring, CA](https://www.soakingsprings.com/hot-springs/california/sulphur-spring-2): 75°F source, Roadside, near Waldon, Contra Costa County
- [Tolenas Springs, CA](https://www.soakingsprings.com/hot-springs/california/tolenas-springs): 68°F source, Short Walk, near Fairfield, Solano County
- [Unnamed thermal spring, CA](https://www.soakingsprings.com/hot-springs/california/unnamed-spring-napa-county): 83°F source, Roadside, near Napa, Napa County
- [Springs, CA](https://www.soakingsprings.com/hot-springs/california/springs-contra-costa-county): Warm, Roadside, near Clayton, Contra Costa 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 73°F (23°C). This is a warm thermal spring.

**Where is  located?**
 is located in Solano County, California at 218 feet elevation, near Benicia. Coordinates: 38.1010°N, 122.1690°W.

**How do I get to ?**
 has Roadside road access, with the nearest road being Lake Herman Road (225 ft from the road).

**Can I camp near ?**
Yes, Aquatic Park Cove, Black Point Overnight Anchoring, Sailing Vessels Only (Auxiliary Engine Ok) is located nearby (24.5 miles away).

## Sources

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