Horseshoe Spring

Lake County, California · Near Soda Bay
38.9940°N, 122.7420°W · 1,321 ft
108°F 62°F air · Good soaking weather 1,321 ft Short Walk Camping nearby (21.4 mi)
Aerial view of the ground around Horseshoe Spring LiDAR bare-earth view of the same ground around Horseshoe Spring
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.

Two miles from Soda Bay in Lake County, Horseshoe Spring comes up near the top of comfortable soaking temperature, hot without being scalding. The record is silent on owner and access; chemistry is blank too, and no survey date sits behind the temperature reading.

Location

Roughly five hundred feet of walking, starting from a road that is unnamed on file. Modest elevation, around twenty-seven inches of rain, a few inches of snow. The nearest camp listed is Letts Lake, more than twenty miles away, so this is a stop on the way somewhere, a soak if permitted.

The record lists winter. Pleasantly hot water, close to the edge of too hot, so put a hand in first. Access and ownership unknown; ask locally before treating it as public. No fee on file. Short walk is the access class, so expect a little ground to cover from wherever you leave the car, and nothing on file describes a pool.

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 Horseshoe Spring.

Setting
Gentle slope
The ground tilts gently up to the southwest.
Highest ground nearby
180 ft above the spring
Within a quarter mile, to the southwest
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
172 milliwatts per square meter of heat flow

That's about 2½ times the US average of 65. It's higher than at 97% 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
47°
Jan
48°
Feb
51°
Mar
57°
Apr
63°
May
72°
Jun
78°
Jul
78°
Aug
73°
Sep
64°
Oct
53°
Nov
46°
Dec
Annual Precip: 26.7 in Annual Snow: 4.5 in
Best Time to Visit
December Air 46°F · Water 108°F · +62° contrast
January Air 47°F · Water 108°F · +61° contrast
February Air 48°F · Water 108°F · +60° contrast
December offers 32°F more contrast than August
Current Conditions
62°F
WSW 10.8 mph 51% Good soaking weather
Tuesday 81° Low 60° Sunny
Spring is +27° warmer
Wednesday 75° Low 58° Sunny 4% precip
Spring is +33° warmer
Thursday 77° Low 57° Sunny 1% precip
Spring is +31° warmer
Friday 82° Low 59° Sunny
Spring is +26° warmer
Saturday 83° Low 61° Sunny
Spring is +25° warmer
Nearby Camping
Nearby Camping
Letts Lake Campground 21.4 mi away

The main feature of the area is a 35-acre lake for non-motorized vessels, trout fishing and swimming. A one-mile trail leads along the lake shore. There are accessible restrooms and a popular fully-accessible fishing pier.

Reserve on Recreation.gov →
Temperature
108°F
Warm Hot Boiling
Water Temp 108°F (42°C)
Avg Air Temp 61°F
Above Ambient +47°F
Good soaking conditions September
Access
Road Access Short Walk
Distance to Road 0.1 mi
Frequently Asked Questions
What is the water temperature at Horseshoe Spring?
Horseshoe Spring has a water temperature of 108°F (42°C). This is considered a hot spring, well above body temperature.
Where is Horseshoe Spring located?
Horseshoe Spring is located in Lake County, California at 1,321 feet elevation, near Soda Bay. Coordinates: 38.9940°N, 122.7420°W.
How do I get to Horseshoe Spring?
Horseshoe Spring has Short Walk road access (0.1 mi from the road).
Can I camp near Horseshoe Spring?
Yes, Letts Lake Campground is located nearby (21.4 miles away).