Mclear Warm Springs

Plumas County, California · Near Portola
39.7280°N, 120.5470°W · 4,609 ft
86°F 4,609 ft Short Walk Camping nearby (5.7 mi)
Aerial view of the ground around Mclear Warm Springs LiDAR bare-earth view of the same ground around Mclear Warm 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.

McLear Warm Springs lies in the pine country of Plumas County, not far from Portola. The water is warm, in the range where you notice it on your skin but would not call it a bath. The record has no owner or land unit for it. Public entry goes unmentioned. What is on file is a short walk from a road and a climate that buries the area in snow most winters.

Location

Six hundred feet or so from the nearest road, which goes unnamed here. The elevation is mid-mountain, above four and a half thousand feet. Winters are serious. Snowfall averages well over a hundred inches, and with thirty-some inches of precipitation a year this is wet country by California standards. The annual average of about fifty degrees hides the cold half of the year.

The record lists December through February as the best months, which is odd for a place with this much snow, so weigh that against the snowfall figure and check road conditions. Calpine Lookout campground is about six miles away. Nothing on file says who owns the spring or if you may enter. The water is warm only, a fair-weather dip.

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 Mclear Warm Springs.

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

That's about twice the US average of 65. It's higher than at 75% 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
33°
Jan
34°
Feb
38°
Mar
44°
Apr
52°
May
64°
Jun
72°
Jul
71°
Aug
64°
Sep
52°
Oct
39°
Nov
31°
Dec
Annual Precip: 34.4 in Annual Snow: 143.5 in
Best Time to Visit
December Air 31°F · Water 86°F · +55° contrast
January Air 33°F · Water 86°F · +53° contrast
February Air 34°F · Water 86°F · +52° contrast
December offers 41°F more contrast than July
Current Conditions
NE 0.0 mph
Today 79° Low 39° Sunny
Spring is +7° warmer
Wednesday 74° Low 36° Sunny 2% precip
Spring is +12° warmer
Thursday 73° Low 39° Sunny
Spring is +13° warmer
Friday 81° Low 41° Sunny
Spring is +5° warmer
Saturday 84° Low 44° Sunny
Spring is +2° warmer
Where to Stay

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Nearby Camping
Calpine Lookout 5.7 mi away

Overview Calpine is a forest fire lookout tower that was constructed in 1934 by the Civilian Conservation Corps, and is one of three remaining examples of the enclosed windmill-style lookout in California. The lookout was actively used every summer until 1975. It is a three-story structure with external stairs. The top room or observation cab is the only rentable space at this time. This is a popular rental facility that is booked almost every night of the year. Calpine sits at an elev...

Reservable Yes
Reserve on Recreation.gov →
Temperature
86°F
Warm Hot Boiling
Water Temp 86°F (30°C)
Avg Air Temp 50°F
Above Ambient +37°F
Mild soaking conditions September
Access
Road Access Short Walk
Distance to Road 0.1 mi
Frequently Asked Questions
What is the water temperature at Mclear Warm Springs?
Mclear Warm Springs has a water temperature of 86°F (30°C). This is a warm thermal spring.
Where is Mclear Warm Springs located?
Mclear Warm Springs is located in Plumas County, California at 4,609 feet elevation, near Portola. Coordinates: 39.7280°N, 120.5470°W.
How do I get to Mclear Warm Springs?
Mclear Warm Springs has Short Walk road access (0.1 mi from the road).
Can I camp near Mclear Warm Springs?
Yes, Calpine Lookout is located nearby (5.7 miles away).