Hot Spot

Siskiyou County, California · Near Tulelake
41.6070°N, 121.5230°W · 7,078 ft
191°F 50°F air · Good soaking weather 7,078 ft Open Short Walk US Forest Service Camping nearby (3.5 mi)
Very Hot Source, Use Extreme Caution

At 191°F, the source water at Hot Spot 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 Hot Spot LiDAR bare-earth view of the same ground around Hot Spot
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.

The name is Hot Spot and the temperature backs it up. This is a scalding vent in the Modoc National Forest, Siskiyou County, twenty-some miles from Tulelake, high enough that it spends a good part of the year under snow. The land is Forest Service and public access is listed as Open. Nobody should be soaking here. The water comes out close to boiling.

Location
38 miles from Mount Shasta, CA

The walk from the nearest road is under half a mile. Which road goes unrecorded. Elevation is a little over seven thousand feet, and the winters are serious: ten feet of snow in an ordinary year, with close to thirty inches of precipitation overall. Camping: Medicine Lake Recreation Area, three and a half miles off.

Midwinter, December through February, is what the record lists as the best time, which at this snow load makes a visit its own problem, and the record does not say how people reach it in that season. Keep well back from the water. It scalds instantly. No fee appears on file. No water chemistry exists for it.

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 Hot Spot.

Setting
Hillside
The spring sits on a steep slope that climbs to the northwest.
Highest ground nearby
79 ft above the spring
Within a quarter mile, to the northwest
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
99 milliwatts per square meter of heat flow

That's about 1½ times the US average of 65. It's higher than at 45% 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
26°
Jan
26°
Feb
29°
Mar
35°
Apr
43°
May
53°
Jun
63°
Jul
62°
Aug
54°
Sep
43°
Oct
32°
Nov
25°
Dec
Annual Precip: 29.4 in Annual Snow: 122.7 in
Best Time to Visit
December Air 25°F · Water 191°F · +167° contrast
January Air 26°F · Water 191°F · +165° contrast
February Air 26°F · Water 191°F · +165° contrast
December offers 39°F more contrast than July
Current Conditions
50°F
SE 0.0 mph 44% Good soaking weather
Tuesday 64° Low 39° Sunny 4% precip
Spring is +127° warmer
Wednesday 56° Low 39° Mostly Sunny then Scattered Showers And Thunderstorms 32% precip
Spring is +135° warmer
Thursday 57° Low 38° Slight Chance Light Rain 23% precip
Spring is +134° warmer
Friday 63° Low 39° Sunny 1% precip
Spring is +128° warmer
Saturday 66° Low 42° Sunny
Spring is +125° warmer
Nearby Camping
Nearby Camping
Medicine Lake Recreation Area 3.5 mi away

Overview The popular Medicine Lake Recreation Area and adjacent Medicine Lake are located in the Medicine Lake Highlands in northeastern California. The Recreation Area is located in the Modoc National Forest at an elevation of 6,770 feet.Recreation The Medicine Lake Recreation Area offers camping, boating, fishing and swimming. The adjacent Day Use Areas accommodate boating with a concrete boat ramp and dock. Swimming is available in a designated swimming area next to the Picnic Area. Hi...

Reservable Yes
Reserve on Recreation.gov →
Mile-High Advisory 7,078 ft

Hot Spot sits at 7,078 feet above sea level, way above the mile-high mark. You may not feel the altitude strongly, but hot water still dehydrates you faster at elevation. UV is about 28% stronger than at sea level, so bring sunscreen and drink more water than you normally would.

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Temperature
191°F
Warm Hot Boiling
Water Temp 191°F (88°C)
Avg Air Temp 41°F
Above Ambient +150°F
Great soaking conditions September
Access
Open
Road Access Short Walk
Distance to Road 0.4 mi
Land
Ownership Federal
Agency US Forest Service
Designation National Forest
Unit Modoc National Forest
Manager US Forest Service
Protection 3 - Protected, subject to extractive use
Frequently Asked Questions
What is the water temperature at Hot Spot?
Hot Spot has a water temperature of 191°F (88°C). This is considered a hot spring, well above body temperature.
Where is Hot Spot located?
Hot Spot is located in Siskiyou County, California at 7,078 feet elevation, near Tulelake. Coordinates: 41.6070°N, 121.5230°W.
How do I get to Hot Spot?
Hot Spot has Short Walk road access (0.4 mi from the road).
Is Hot Spot free to visit?
Hot Spot has Open access. It is managed by US Forest Service.
Can I camp near Hot Spot?
Yes, Medicine Lake Recreation Area is located nearby (3.5 miles away).
Is it safe to soak at Hot Spot?
No, not at the source. The water at Hot Spot reaches 191°F, which can cause severe burns within seconds. Look for cooled side pools or downstream stretches, and test with a hand before anything else.