Leonards Hot Springs

Modoc County, California · Near Alturas
41.6000°N, 120.0880°W · 4,549 ft
144°F 4,549 ft Short Walk Camping nearby (13.0 mi)
Very Hot Source, Use Extreme Caution

At 144°F, the source water at Leonards Hot Springs is hot enough to cause burns. Some hot springs this hot have cooler side pools or downstream areas suitable for soaking. Always test the water temperature before entering.

Leonards Hot Springs, in Modoc County about twenty-five miles from Alturas, comes out of the ground too hot to touch. County Road 18 gets you within a short walk of it. The owner is unrecorded, and so is the access status. There is a photo in the record. Neither a pool nor bathing activity is described on file.

Location

About a tenth of a mile from County Road 18 on foot. The country is around forty-five hundred feet, dry, with winters that drop a little over four feet of snow. Sixteen inches of precipitation fall across the year. Thirteen miles separate it from Pepperdine Equestrian Campground.

Winter tops the record's list of months. Stay out of the water and away from its edge; contact means an instant scald. The land question is open, no owner on file, so be ready to turn around. Fee and chemistry are blank. The USGS has no site number here.

Terrain

Aircraft with laser scanners measured this ground to within inches. The scan strips out trees and buildings, leaving the bare shape of the land around Leonards Hot Springs.

Aerial view of the ground around Leonards Hot Springs LiDAR bare-earth view of the same ground around Leonards Hot Springs
Aerial LiDAR bare earth

Drag the handle to compare the two views. The orange dot marks the spring, in a frame about three quarters of a mile wide.

Setting
Open ground
Flat, open ground all around.
Highest ground nearby
33 ft above the spring
Within a quarter mile, to the northeast
Cross-section through the spring

A slice through the ground from southwest to northeast, about 0.6 miles end to end.

Elevation data: USGS 3D Elevation Program. Aerial imagery: USGS The National Map. Public domain.

Heat Below
92 milliwatts per square meter of heat flow

That's about 1½ times the US average of 65. It's higher than at 34% of the springs on this site.

Heat flow measures the warmth working its way up through the ground from deep inside the earth. Where it runs high, rain and snowmelt that seep down through cracks in the rock come back up hot.

Heat flow estimate: Stanford Thermal Earth Model (Aljubran & Horne, 2024), CC BY 4.0.

Monthly Climate
30°
Jan
32°
Feb
37°
Mar
46°
Apr
55°
May
65°
Jun
75°
Jul
74°
Aug
65°
Sep
52°
Oct
39°
Nov
29°
Dec
Annual Precip: 15.9 in Annual Snow: 52.5 in
Best Time to Visit
December Air 29°F · Water 144°F · +115° contrast
January Air 30°F · Water 144°F · +114° contrast
February Air 32°F · Water 144°F · +112° contrast
December offers 46°F more contrast than July
Current Conditions
S 10.8 mph
Tuesday 80° Low 42° Sunny 2% precip
Spring is +64° warmer
Wednesday 74° Low 45° Sunny then Slight Chance Showers And Thunderstorms 15% precip
Spring is +70° warmer
Thursday 74° Low 43° Slight Chance Rain Showers 15% precip
Spring is +70° warmer
Friday 80° Low 43° Sunny 4% precip
Spring is +64° warmer
Saturday 82° Low 46° Sunny
Spring is +62° warmer
Where to Stay

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Nearby Camping
Pepperdine Equestrian Campground 13.0 mi away

The campsites are mostly shaded and enjoy serene surroundings and are equiped with 12' X 12' metal corrals. A short trail runs over to the start of the Summit Trail where it heads south into the South Warner Wilderness.  No wilderness permits are required however, if you plan to use a camp or backpack stove or charcoal barbeque or have a campfire outside the developed campground, you will need a current California Campfire Permit.

Reserve on Recreation.gov →
Temperature
144°F
Warm Hot Boiling
Water Temp 144°F (62°C)
Avg Air Temp 50°F
Above Ambient +94°F
Great soaking conditions September
Access
Road Access Short Walk
Nearest Road County Road 18
Distance to Road 0.1 mi
Frequently Asked Questions
What is the water temperature at Leonards Hot Springs?
Leonards Hot Springs has a water temperature of 144°F (62°C). This is considered a hot spring, well above body temperature.
Where is Leonards Hot Springs located?
Leonards Hot Springs is located in Modoc County, California at 4,549 feet elevation, near Alturas. Coordinates: 41.6000°N, 120.0880°W.
How do I get to Leonards Hot Springs?
Leonards Hot Springs has Short Walk road access, with the nearest road being County Road 18 (0.1 mi from the road).
Can I camp near Leonards Hot Springs?
Yes, Pepperdine Equestrian Campground is located nearby (13.0 miles away).
Is it safe to soak at Leonards Hot Springs?
No, not at the source. The water at Leonards Hot Springs reaches 144°F, which can cause severe burns within seconds. Look for cooled side pools or downstream stretches, and test with a hand before anything else.