Spring

Modoc County, California · Near Alturas
41.4840°N, 120.7640°W · 4,457 ft
81°F 4,457 ft Roadside
Aerial view of the ground around Spring

The orange dot marks the spring, in a frame about three quarters of a mile wide.

Eleven miles from Alturas in Modoc County, a plain entry on the thermal list: a spring named only Spring, running tepid at around eighty degrees. It sits almost on the road. The ownership line is blank, and so is public access, which means you cannot assume a right to be there.

Location

Classified roadside, and the walk from the road is under a hundred yards. That road has no name on the record. High plateau country here, around 4,500 feet, and cold for California. The yearly average sits near fifty and winters lay down something near four feet of snow. Precipitation runs about eighteen inches.

Midwinter comes out on top for timing, though at this height that means walking in over snow. Tepid water carries no burn risk. Nothing shows up for camping nearby, and no fee is listed. Before going, run down who holds the land, because ownership and permission are both missing.

Terrain

USGS hasn't flown a detailed laser scan here yet, so this view comes from aerial photos and older elevation data.

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

That's about 1½ times the US average of 65. It's higher than at 27% 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
32°
Jan
34°
Feb
39°
Mar
46°
Apr
55°
May
65°
Jun
74°
Jul
73°
Aug
64°
Sep
51°
Oct
39°
Nov
31°
Dec
Annual Precip: 17.9 in Annual Snow: 44.4 in
Best Time to Visit
December Air 31°F · Water 81°F · +50° contrast
January Air 32°F · Water 81°F · +49° contrast
February Air 34°F · Water 81°F · +47° contrast
December offers 43°F more contrast than July
Current Conditions
Clear N 0.0 mph
Tuesday 79° Low 41° Sunny 2% precip
Spring is +2° warmer
Wednesday 72° Low 43° Sunny then Isolated Showers And Thunderstorms 15% precip
Spring is +9° warmer
Thursday 72° Low 41° Sunny 10% precip
Spring is +9° warmer
Friday 78° Low 42° Sunny 1% precip
Spring is +3° warmer
Saturday 81° Low 44° Sunny
Where to Stay

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Temperature
81°F
Warm Hot Boiling
Water Temp 81°F (27°C)
Avg Air Temp 50°F
Above Ambient +31°F
Mild soaking conditions September
Access
Road Access Roadside
Distance to Road 253 ft
Frequently Asked Questions
What is the water temperature at Spring?
Spring has a water temperature of 81°F (27°C). This is a warm thermal spring.
Where is Spring located?
Spring is located in Modoc County, California at 4,457 feet elevation, near Alturas. Coordinates: 41.4840°N, 120.7640°W.
How do I get to Spring?
Spring has Roadside road access (253 ft from the road).
Sources: Wikipedia