# Mark West Springs, California

Mark West Springs in California. 88°F (31°C). Roadside. Sonoma County.

- Page: https://www.soakingsprings.com/hot-springs/california/mark-west-springs
- Source: Soaking Springs, researched and maintained by Armen Suny
- Updated: 2026-09-14

## Can you soak at Mark West Springs?

The water leaves the ground at 88°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 | 88°F (31°C) (USGS record; developed pools are often cooled) |
| Elevation | 440 ft |
| Access | Roadside, 76 ft from the nearest road |
| County | Sonoma County |
| Nearest town | Larkfield-Wikiup |
| Coordinates | 38.55000, -122.72000 |
| Best months to soak | January, December, February (largest gap between water and average air temperature) |
| Nearest campground | BOAT-IN SITES (LAKE SONOMA), 18.6 mi |

## About Mark West Springs

Mark West Springs in Sonoma County lies about three miles from Larkfield-Wikiup, right beside a road the record leaves unnamed. The water is warm, a few degrees below body heat. There is a photo. Ownership is not filled in and access status is blank too, so the record cannot say if stopping is allowed.

Seventy-odd feet from the road. Low elevation, a few hundred feet, with a fair amount of rain and no snow on record. the record gives no land unit. The closest camping listed is the boat-in sites at Lake Sonoma, about nineteen miles away, which is a long way for a roadside spot.

December through February score highest on file, and without snow there is no seasonal barrier. The water cannot burn; it is on the cool side for a soak. Land status is the thing to sort out first, since nothing here grants public entry. No chemistry is on record.

## Nearby

- Nearest city page: [Hot springs near Santa Rosa](https://www.soakingsprings.com/hot-springs/near/california/santa-rosa), 7 mi away
- State page: [Hot springs in California](https://www.soakingsprings.com/hot-springs/california)
- [Calistoga Hot Springs, CA](https://www.soakingsprings.com/hot-springs/california/calistoga-hot-springs): 172°F source, Roadside, near Calistoga, 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
- [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
- [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
- [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
- [Aetna Springs, CA](https://www.soakingsprings.com/hot-springs/california/aetna-springs): 91°F source, Roadside, near Angwin, Napa County

## Questions

**What is the water temperature at Mark West Springs?**
Mark West Springs has a water temperature of 88°F (31°C). This is a warm thermal spring.

**Where is Mark West Springs located?**
Mark West Springs is located in Sonoma County, California at 440 feet elevation, near Larkfield-Wikiup. Coordinates: 38.5500°N, 122.7200°W.

**How do I get to Mark West Springs?**
Mark West Springs has Roadside road access (76 ft from the road).

**Can I camp near Mark West Springs?**
Yes, Boat In Sites (Lake Sonoma) is located nearby (18.6 miles away).

## Sources

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