Beaverhead Rock Spring
Beaverhead Rock Spring emerges at 81°F at 4,813 feet elevation in Beaverhead County, Montana, running 38 degrees above the local annual air temperature -- a substantial thermal anomaly for a roadside spring. Only 14.5 meters from the nearest road, it requires no walking to reach.
The spring surfaces near Beaverhead Rock, the massive limestone cliff formation rising above the Beaverhead River valley between Dillon and Twin Bridges. The surrounding landscape is high-desert sagebrush steppe with irrigated hay meadows along the river bottom. Annual precipitation is just 12.7 inches with 37 inches of snow, reflecting the rain shadow east of the Continental Divide. The Beaverhead River, a renowned trout fishery, flows nearby through a broad, open valley framed by the Pioneer and Ruby mountain ranges.
Beaverhead Rock is the landmark Sacagawea recognized during the Lewis and Clark Expedition in August 1805, confirming the Corps of Discovery was nearing Shoshone territory. The spring itself carries no separate documented development history and appears in the 1980 NOAA/NCEI inventory as an undeveloped thermal feature. The area has been ranching country since the 1860s, and the spring likely served as a stock-watering source for generations.
The spring is accessible year-round from the road with no walking required. Dillon, 15 miles south, provides full services including lodging and supplies. Summer temperatures in this semi-arid valley can exceed 90°F while winter lows drop well below zero. Birch Creek Cabin, the nearest reservable Forest Service accommodation, sits 31.5 km away. The Beaverhead River offers blue-ribbon fly fishing within easy driving distance. Sunscreen and wind protection are advisable in this exposed landscape.
Is Beaverhead Rock Spring worth visiting?
Best for
- Warm-water soaking
- Easy day trips
- Overnight camping trips
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...