Seyferth Hot Springs

Modoc County, California · Near Alturas
41.6150°N, 120.1020°W · 4,669 ft
185°F 43°F air · Good soaking weather 4,669 ft Open Roadside Bureau of Land Management Camping nearby (13.5 mi)
Very Hot Source, Use Extreme Caution

At 185°F, the source water at Seyferth 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.

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

Scalding water at the roadside on BLM land in Modoc County. Seyferth Hot Springs sits about 25 miles from Alturas, under two hundred feet from a road nobody has named on file, managed by the Applegate Field Office, and anyone may visit. The temperature on file is high enough to cause serious burns. Nobody should plan to soak in the source.

Location

High desert plateau, well over four thousand feet up, cold most of the year and buried under something like four and a half feet of snow each winter. Roadside, public ground, no fee on record. Pepperdine Equestrian Campground, thirteen or fourteen miles off, is the camping on record. The annual average temperature sits below fifty.

The listed best months fall in deep winter, which in Modoc County means snow on the ground and a real question of road access; check before you drive out from Alturas. The water is scalding. Kids and dogs should stay well away from where it comes up. Access is open on BLM land. Camping is at Pepperdine, a dozen miles off or a bit more.

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 Seyferth Hot Springs.

Setting
Gentle slope
The ground tilts gently up to the northeast.
Highest ground nearby
140 ft above the spring
Within a quarter mile, to the northeast
Cross-section through the spring

A slice through the ground from northwest to southeast, about 0.6 miles end to end.

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

Heat Below
91 milliwatts per square meter of heat flow

That's about 1½ times the US average of 65. It's higher than at 33% 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
29°
Jan
31°
Feb
37°
Mar
45°
Apr
54°
May
64°
Jun
74°
Jul
73°
Aug
65°
Sep
51°
Oct
38°
Nov
28°
Dec
Annual Precip: 15.9 in Annual Snow: 52.5 in
Best Time to Visit
December Air 28°F · Water 185°F · +157° contrast
January Air 29°F · Water 185°F · +156° contrast
February Air 31°F · Water 185°F · +154° contrast
December offers 46°F more contrast than July
Current Conditions
43°F
WSW 0.0 mph 52% Good soaking weather
Today 80° Low 45° Sunny 2% precip
Spring is +105° warmer
Wednesday 74° Low 43° Sunny then Slight Chance Showers And Thunderstorms 15% precip
Spring is +111° warmer
Thursday 74° Low 43° Slight Chance Rain Showers 15% precip
Spring is +111° warmer
Friday 80° Low 46° Sunny 4% precip
Spring is +105° warmer
Saturday 82° Low 48° Sunny
Spring is +103° warmer
Where to Stay

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Nearby Camping
Pepperdine Equestrian Campground 13.5 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
185°F
Warm Hot Boiling
Water Temp 185°F (85°C)
Avg Air Temp 49°F
Above Ambient +136°F
Great soaking conditions September
Access
Open
Road Access Roadside
Distance to Road 196 ft
Land
Ownership Federal
Agency Bureau of Land Management
Designation PUB
Unit Applegate Field Office
Manager Bureau of Land Management
Protection 3 - Protected, subject to extractive use
Frequently Asked Questions
What is the water temperature at Seyferth Hot Springs?
Seyferth Hot Springs has a water temperature of 185°F (85°C). This is considered a hot spring, well above body temperature.
Where is Seyferth Hot Springs located?
Seyferth Hot Springs is located in Modoc County, California at 4,669 feet elevation, near Alturas. Coordinates: 41.6150°N, 120.1020°W.
How do I get to Seyferth Hot Springs?
Seyferth Hot Springs has Roadside road access (196 ft from the road).
Is Seyferth Hot Springs free to visit?
Seyferth Hot Springs has Open access. It is managed by Bureau of Land Management.
Can I camp near Seyferth Hot Springs?
Yes, Pepperdine Equestrian Campground is located nearby (13.5 miles away).
Is it safe to soak at Seyferth Hot Springs?
No, not at the source. The water at Seyferth Hot Springs reaches 185°F, which can cause severe burns within seconds. Look for cooled side pools or downstream stretches, and test with a hand before anything else.