Unnamed Thermal Spring

Washoe County, California · Near Cold Springs
39.9800°N, 120.0640°W · 4,315 ft
108°F 4,315 ft Roadside Camping nearby (7.9 mi)
Aerial view of the ground around the spring LiDAR bare-earth view of the same ground around the 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.

This unnamed thermal point is filed under Washoe County in the California records, and it is hot. The recorded temperature is 108, warm enough that most people would call it a bath. The nearest town the record can attach to it is Cold Springs, almost a hundred miles away, which tells you how empty this stretch of country is. Access status and land owner are both unrecorded.

Location

Route 395 runs within a few hundred feet, so reaching the spring is a matter of pulling over and walking a bit. The country is high desert at over four thousand feet, and winter is real here, with fifty-odd inches of snow most winters. Rain adds up to maybe seventeen inches. Summers are dry and warm. No land unit or designation is attached, so who manages the ground is an open question.

The listed months are the dead of winter, December through February, when steam off the water earns its keep, but that is also when the snow comes, so watch the highway forecast. Big Cove campground in Plumas National Forest is the closest camping on file, around eight miles away. No fee is recorded. Since nobody has written down if the public is welcome, look for signs before you leave the shoulder.

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 this spring.

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

A slice through the ground from west to east, about 0.6 miles end to end.

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

Heat Below
110 milliwatts per square meter of heat flow

That's about 1½ times the US average of 65. It's higher than at 60% 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
34°
Jan
36°
Feb
40°
Mar
48°
Apr
57°
May
69°
Jun
77°
Jul
75°
Aug
68°
Sep
55°
Oct
42°
Nov
33°
Dec
Annual Precip: 16.5 in Annual Snow: 51.4 in
Best Time to Visit
December Air 33°F · Water 108°F · +75° contrast
January Air 34°F · Water 108°F · +74° contrast
February Air 36°F · Water 108°F · +72° contrast
December offers 43°F more contrast than July
Current Conditions
Today 82° Low 45° Sunny
Spring is +26° warmer
Wednesday 77° Low 44° Sunny 3% precip
Spring is +31° warmer
Thursday 75° Low 46° Sunny
Spring is +33° warmer
Friday 78° Low 48° Sunny 1% precip
Spring is +30° warmer
Saturday 82° Low 50° Sunny
Spring is +26° warmer
Where to Stay

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Nearby Camping
Big Cove (Plumas National Forest, Ca) 7.9 mi away

Overview Big Cove Campground (5,700 feet) is located near the shores of Frenchman Lake in Northeastern California. Some families have been returning here for more than thirty years. Situated at the interface between the wild Sierra and the high desert, it's a perfect place to serve as hub for a wide range of recreation opportunities. Plumas National Forest has many back roads open for exploration. Take advantage of the beautiful blue waters of Frenchman Lake for boating, fishing and other wat...

Reservable Yes
Reserve on Recreation.gov →
Temperature
108°F
Warm Hot Boiling
Water Temp 108°F (42°C)
Avg Air Temp 53°F
Above Ambient +55°F
Good soaking conditions September
Access
Road Access Roadside
Nearest Road Route 395
Distance to Road 255 ft
Frequently Asked Questions
What is the water temperature at ?
has a water temperature of 108°F (42°C). This is considered a hot spring, well above body temperature.
Where is located?
is located in Washoe County, California at 4,315 feet elevation, near Cold Springs. Coordinates: 39.9800°N, 120.0640°W.
How do I get to ?
has Roadside road access, with the nearest road being Route 395 (255 ft from the road).
Can I camp near ?
Yes, Big Cove (Plumas National Forest, Ca) is located nearby (7.9 miles away).