Developed hot spring pool · California
Alkali Hot Springs
Mono County, California · 11 miles east of Mammoth Lakes, CA
Last updated
- Type
- Developed Developed hot spring pool
- Water temperature
- 135°F (57°C) at the source
- Cost
- Not recorded
- Hours or season
- Not recorded
- Clothing
- Clothing optional
- Nearest town
- Mammoth Lakes, CA (11 mi / 17 km)
- Coordinates
- Pools or sources
- 2
- Scalding: recorded at 50°C or above. Water at this temperature causes burns in seconds.
About Alkali Hot Springs
Alkali Hot Springs is a developed hot spring pool in Mono County, California, about 11 miles east of Mammoth Lakes, CA. The nearest large city is Clovis, CA, roughly 77 miles away as the crow flies.
The temperature at the source has been recorded at 135°F (57°C), and readings across the site range from 127°F to 135°F. That puts it in the "too hot to enter at the source" range. Water this hot can burn skin quickly. Soaking pools are usually cooled by mixing with creek or tap water. Never enter the source itself. At developed sites the soaking pools are normally cooled to a comfortable level, so the pools you sit in will be cooler than this figure.
This is a developed site with built pools, tubs or a bathhouse, so there is usually an entry fee, set opening hours and basic facilities.
The site has 2 mapped pools or sources within about 500 meters of each other.
Water temperature
Too hot to enter at the source. Water this hot can burn skin quickly. Soaking pools are usually cooled by mixing with creek or tap water. Never enter the source itself.
Readings come from the NOAA thermal springs list, OpenStreetMap mappers, USGS water quality samples, and other public sources. Temperatures change with season, flow and pool design. See our soak temperature guide for safe soaking times.
Map and directions
Red marks Alkali Hot Springs. Other colored dots are nearby springs in this directory. Coordinates: 37.66940, -118.78240.
Getting there
- Nearest town: Mammoth Lakes, CA. The spring is about 11 miles (17 km) east of town in a straight line.
- Nearest large city: Clovis, CA, about 77 miles (124 km) in a straight line.
- Planning from a city? See hot springs near Fresno, CA.
- Use the directions buttons above for a driving route. Final roads to many springs are unpaved, seasonal or closed in winter, so check road conditions before you go.
Weather forecast
Live forecast for this exact spot from the US National Weather Service.
Hot springs near Alkali Hot Springs
- Hilltop Hot Spring Not recorded
- Wild Willy's Hot Springs Not recorded
- Crab Cooker Hot Springs 167°F
- Rock Tub Hot Spring Not recorded
- Boiling Lake 199°F
- Little Creek Hot Springs 180°F
Before you go
- Check the operator, land manager or park website for current hours, fees and closures. Details in any directory can go out of date.
- Keep your head above water. Warm fresh water can carry Naegleria fowleri, a rare but deadly amoeba that enters through the nose.
- Drink water, limit soaks to 10 to 20 minutes at a time in very hot water, and skip alcohol.
- Read our hot spring etiquette guide and safety guide.
Frequently asked questions
How hot is Alkali Hot Springs?
The temperature at the source has been recorded at 135°F (57°C), which is too hot to enter at the source. Water this hot can burn skin quickly. Soaking pools are usually cooled by mixing with creek or tap water. Never enter the source itself.
Where is Alkali Hot Springs?
Alkali Hot Springs is in Mono County, California, about 11 miles east of Mammoth Lakes, CA. The GPS coordinates are 37.6694, -118.7824.
Is Alkali Hot Springs clothing optional?
It is recorded as clothing optional. Rules can change, so follow any posted signs.
What hot springs are near Alkali Hot Springs?
The closest listed spring is Hilltop Hot Spring, about under 1 mile southwest. Wild Willy's Hot Springs is about 1 mile away.
What should I bring to a hot spring?
Water to drink, a towel, sandals with grip, a bag to pack out trash, and warm layers for after your soak. At primitive springs bring a headlamp and tell someone where you are going.
Sources and corrections
This listing combines OpenStreetMap, the USGS/EPA Water Quality Portal, the NOAA NCEI Thermal Springs List. Data last refreshed August 2026. Source 1 Source 2 Source 3
Visited recently? Send a correction, such as a temperature reading, fee, closure or photo. If you look after this spring and want it removed, see removal requests.