# Napa Rock Soda Spring, Phillips Sod, California

Napa Rock Soda Spring, Phillips Sod in California. 78°F (26°C). Short Walk. Napa County.

- Page: https://www.soakingsprings.com/hot-springs/california/napa-rock-soda-spring-phillips-sod
- Source: Soaking Springs, researched and maintained by Armen Suny
- Updated: 2026-09-14

## Can you soak at Napa Rock Soda Spring, Phillips Sod?

The water leaves the ground at 78°F, about as warm as a heated pool. It's a short walk from the road. We haven't confirmed whether it has a pool or charges a fee.

## Key facts

| Fact | Value |
|---|---|
| Source water temperature | 78°F (26°C) (USGS record; developed pools are often cooled) |
| Elevation | 1,230 ft |
| Access | Short Walk, 0.3 mi from the nearest road |
| County | Napa County |
| Nearest town | Yountville |
| Coordinates | 38.51900, -122.26000 |
| Best months to soak | January, December, February (largest gap between water and average air temperature) |
| Nearest campground | OAK SHORES DAY USE AREA (CA), 3.2 mi |

## About Napa Rock Soda Spring, Phillips Sod

Napa Rock Soda Spring, also filed as Phillips Sod, a name cut short in the record, is a warm mineral spring in the Napa County hills about ten miles from Yountville. The water runs in the high seventies, tepid. Neither owner nor access status is on file.

The nearest road, unnamed on file, is about a third of a mile off, and the spring sits a bit over twelve hundred feet up. Rain is moderate, snow absent. Camping on file is at Oak Shores Day Use Area, a few miles away.

December to February are the months on record. No fee is noted. Ownership is unknown, so confirm what is there before you go. The water is tepid.

## Nearby

- Nearest city page: [Hot springs near Yountville](https://www.soakingsprings.com/hot-springs/near/california/yountville), 0 mi away
- State page: [Hot springs in California](https://www.soakingsprings.com/hot-springs/california)
- [Napa Vichy Springs, CA](https://www.soakingsprings.com/hot-springs/california/napa-vichy-springs): 76°F source, Roadside, near Napa, Napa 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
- [Aetna Springs, CA](https://www.soakingsprings.com/hot-springs/california/aetna-springs): 91°F source, Roadside, near Angwin, Napa County
- [Zim Zim Spring, CA](https://www.soakingsprings.com/hot-springs/california/zim-zim-spring): 70°F source, Short Walk, near Angwin, Napa County

## Questions

**What is the water temperature at Napa Rock Soda Spring, Phillips Sod?**
Napa Rock Soda Spring, Phillips Sod has a water temperature of 78°F (26°C). This is a warm thermal spring.

**Where is Napa Rock Soda Spring, Phillips Sod located?**
Napa Rock Soda Spring, Phillips Sod is located in Napa County, California at 1,230 feet elevation, near Yountville. Coordinates: 38.5190°N, 122.2600°W.

**How do I get to Napa Rock Soda Spring, Phillips Sod?**
Napa Rock Soda Spring, Phillips Sod has Short Walk road access (0.3 mi from the road).

**Can I camp near Napa Rock Soda Spring, Phillips Sod?**
Yes, Oak Shores Day Use Area (Ca) is located nearby (3.2 miles away).

## Sources

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