Flagstaff Butte Hot Spring

Humboldt County, Oregon · Near Winnemucca
42.1880°N, 118.3830°W · 4,656 ft
126°F 35°F air · Good soaking weather 4,656 ft Roadside
Aerial view of the ground around Flagstaff Butte Hot Spring LiDAR bare-earth view of the same ground around Flagstaff Butte Hot 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.

Flagstaff Butte Hot Spring is filed under Humboldt County. Winnemucca is the closest town, with no distance between the two ever recorded. The water runs hot, past comfortable soaking for most people, up where a dip calls for care. Nobody is listed as the owner and access is unknown.

Location

Whitehorse Ranch Road passes fifteen feet from it, about as roadside as a spring gets. The ground is high desert at roughly forty-six hundred feet, dry for most of the year. Winter snow totals run near two feet. Rain is scarce outside of winter storms. No land unit is listed. No photo either.

The record points to December through February as the time to go. Prolonged contact with water this hot will burn, so test before you commit. Nothing is listed for camping within reach, and Winnemucca is the recorded supply point. Since nobody is recorded as owner, watch for gates along Whitehorse Ranch Road.

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 Flagstaff Butte Hot Spring.

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

That's about 1½ times the US average of 65. It's higher than at 18% 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
30°
Jan
33°
Feb
41°
Mar
48°
Apr
56°
May
67°
Jun
78°
Jul
76°
Aug
66°
Sep
51°
Oct
39°
Nov
29°
Dec
Annual Precip: 10.0 in Annual Snow: 23.1 in
Best Time to Visit
December Air 29°F · Water 126°F · +97° contrast
January Air 30°F · Water 126°F · +96° contrast
February Air 33°F · Water 126°F · +93° contrast
December offers 48°F more contrast than July
Current Conditions
35°F
SSE 25.0 mph 66% Good soaking weather
Tuesday 75° Low 44° Sunny 1% precip
Spring is +51° warmer
Wednesday 72° Low 46° Sunny 3% precip
Spring is +54° warmer
Thursday 70° Low 49° Chance Rain Showers then Mostly Sunny 34% precip
Spring is +56° warmer
Friday 73° Low 47° Sunny 6% precip
Spring is +53° warmer
Saturday 76° Low 48° Sunny
Spring is +50° warmer
Temperature
126°F
Warm Hot Boiling
Water Temp 126°F (52°C)
Avg Air Temp 51°F
Above Ambient +75°F
Great soaking conditions September
Access
Road Access Roadside
Nearest Road Whitehorse Ranch Road
Distance to Road 15 ft
Frequently Asked Questions
What is the water temperature at Flagstaff Butte Hot Spring?
Flagstaff Butte Hot Spring has a water temperature of 126°F (52°C). This is considered a hot spring, well above body temperature.
Where is Flagstaff Butte Hot Spring located?
Flagstaff Butte Hot Spring is located in Humboldt County, Oregon at 4,656 feet elevation, near Winnemucca. Coordinates: 42.1880°N, 118.3830°W.
How do I get to Flagstaff Butte Hot Spring?
Flagstaff Butte Hot Spring has Roadside road access, with the nearest road being Whitehorse Ranch Road (15 ft from the road).
Is it safe to soak at Flagstaff Butte Hot Spring?
With care. At 126°F Flagstaff Butte Hot Spring is hot enough to need short sessions, fifteen to twenty minutes, and plenty of water. Enter slowly and get out if you feel light-headed.