Unnamed Thermal Spring

Modoc County, Nevada · Near Alturas
41.1750°N, 119.9570°W · 4,709 ft
Hot 52°F air · Good soaking weather 4,709 ft Open Hike Bureau of Land Management Camping nearby (12.2 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.

Forty-odd miles from Alturas in Modoc County, a thermal point without a name on Applegate Field Office land. The survey flagged it as hot but never wrote down a temperature, so there is no way from the record to say if a soak is possible or safe. The access note reads open. The nearest camping on file is Patterson Guard Station, about a dozen miles off.

Location

A hike of nearly a mile and a half from Old Highway Road, the closest named road in the record. Bureau of Land Management ground at moderate elevation. Snow piles up close to five feet in an average winter and the year is wetter than most of the basin country, so expect soggy ground in spring. The land has no designation beyond public.

No best-months rating is on file. Given the snowfall, a summer or early fall visit will have the easiest walking. Hiking access, call it a mile and a half each way. Patterson Guard Station is the listed campground, roughly twelve miles away. No fee noted. Because nobody ever measured the temperature, test the water before any part of you goes in.

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

That's about 1½ times the US average of 65. It's higher than at 62% 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
31°
Jan
32°
Feb
38°
Mar
46°
Apr
55°
May
66°
Jun
76°
Jul
75°
Aug
66°
Sep
53°
Oct
40°
Nov
30°
Dec
Annual Precip: 15.0 in Annual Snow: 56.7 in
Current Conditions
52°F
NNE 0.0 mph 33% Good soaking weather
Tuesday 73° Low 46° Sunny 2% precip
Wednesday 67° Low 47° Sunny then Slight Chance Rain Showers 15% precip
Thursday 67° Low 47° Slight Chance Rain Showers 15% precip
Friday 73° Low 46° Sunny 2% precip
Saturday 75° Low 50° Sunny
Where to Stay

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Nearby Camping
Patterson Guard Station 12.2 mi away

Overview *Altitude is 7,080 feet above sea level*  Set on the edge of a meadow surrounded by Aspen, Fir and Pine trees, Patterson Guard Station has stood since 1921. It served the Modoc National Forest as a fully staffed fire office and guard station until 1981.   Just a few footsteps from the Summit Trail and one-quarter mile from the wilderness boundary, Patterson Guard Station can be your basecamp for trips into the South Warner Wilderness or the perfect place to disconnect and relax. The...

Reservable Yes
Reserve on Recreation.gov →
Temperature
Hot
Warm Hot Boiling
Avg Air Temp 51°F
Access
Open
Road Access Hike
Nearest Road Old Highway Road
Distance to Road 1.4 mi
Land
Ownership Federal
Agency Bureau of Land Management
Designation PUB
Unit Applegate Field Office
Manager Bureau of Land Management
Protection 3 - Protected, subject to extractive use
Frequently Asked Questions
What is the water temperature at ?
is classified as hot. An exact temperature measurement has not been recorded.
Where is located?
is located in Modoc County, Nevada at 4,709 feet elevation, near Alturas. Coordinates: 41.1750°N, 119.9570°W.
How do I get to ?
has Hike road access, with the nearest road being Old Highway Road (1.4 mi from the road).
Is free to visit?
has Open access. It is managed by Bureau of Land Management.
Can I camp near ?
Yes, Patterson Guard Station is located nearby (12.2 miles away).