Beaverhead Rock Spring

Beaverhead County, Montana · Near Dillon
45.3920°N, 112.4520°W · 4,813 ft
81°F 29°F air · Good soaking weather 4,813 ft Roadside Camping nearby (19.6 mi)
Aerial view of the ground around Beaverhead Rock Spring LiDAR bare-earth view of the same ground around Beaverhead Rock 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.

Beaverhead Rock Spring sits right beside a road in Beaverhead County, fifteen miles or so from Dillon. It runs warm, about what you would call lukewarm in a tub. The land underneath carries no recorded owner, and access is an open question. Treat it as a point on the map, since nobody has confirmed it as a soak.

Location

You can nearly touch it from the roadway; the record puts it under fifty feet from the road. The spring lies at low valley elevation in one of the drier corners of southwestern Montana, where winter snow is light and summers are dry. Which road, nobody wrote down.

Roadside access means no walking. The record favors December through February, and with the light snowfall here a winter stop is realistic. The nearest camp, Birch Creek Cabin, is nearly twenty miles away. Survey date and chemistry are both missing, as is the owner. Ask around in Dillon before you plan on it.

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 Beaverhead Rock Spring.

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

That's about 1½ times the US average of 65. It's higher than at 28% 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
19°
Jan
22°
Feb
32°
Mar
41°
Apr
51°
May
61°
Jun
71°
Jul
70°
Aug
59°
Sep
44°
Oct
30°
Nov
19°
Dec
Annual Precip: 12.7 in Annual Snow: 37.3 in
Best Time to Visit
December Air 19°F · Water 81°F · +63° contrast
January Air 19°F · Water 81°F · +62° contrast
February Air 22°F · Water 81°F · +59° contrast
December offers 53°F more contrast than July
Current Conditions
29°F
NE 3.6 mph 88% Good soaking weather
Today 72° Low 36° Patchy Fog then Sunny
Spring is +9° warmer
Wednesday 72° Low 39° Sunny 2% precip
Spring is +9° warmer
Thursday 75° Low 43° Mostly Sunny then Chance Showers And Thunderstorms 52% precip
Spring is +6° warmer
Friday 70° Low 39° Chance Rain Showers 50% precip
Spring is +11° warmer
Saturday 72° Low 39° Sunny 12% precip
Spring is +9° warmer
Nearby Camping
Nearby Camping
Birch Creek Cabin 19.6 mi away

Overview Birch Creek Cabin is a historic log cabin with electricity. It provides access to a variety of hiking, ohv, and for cross-country skiing and snowshoe trails (depending on the season). A vaulted toilet lies 100' west of the cabin. Guests can typically access the cabin by vehicle, depending on conditions. The roads leading to the cabin are gravel - but suitable for passenger cars (depending on the season and snow levels). The final quarter-mile may be covered with impassible snow d...

Reservable Yes
Reserve on Recreation.gov →
Temperature
81°F
Warm Hot Boiling
Water Temp 81°F (27°C)
Avg Air Temp 43°F
Above Ambient +38°F
Mild soaking conditions September
Access
Road Access Roadside
Distance to Road 48 ft
Frequently Asked Questions
What is the water temperature at Beaverhead Rock Spring?
Beaverhead Rock Spring has a water temperature of 81°F (27°C). This is a warm thermal spring.
Where is Beaverhead Rock Spring located?
Beaverhead Rock Spring is located in Beaverhead County, Montana at 4,813 feet elevation, near Dillon. Coordinates: 45.3920°N, 112.4520°W.
How do I get to Beaverhead Rock Spring?
Beaverhead Rock Spring has Roadside road access (48 ft from the road).
Can I camp near Beaverhead Rock Spring?
Yes, Birch Creek Cabin is located nearby (19.6 miles away).