Deerlodge Prison Ranch Springs

Powell County County, Montana · Near Deer Lodge
46.3340°N, 112.8860°W · 5,753 ft
79°F 5,753 ft Restricted Roadside UNK Camping nearby (7.2 mi)

Deerlodge Prison Ranch Springs flows at 79°F on the grounds of the Deer Lodge State Prison Ranch, a state conservation area in Powell County with restricted public access. The spring sits at 5,753 feet elevation, 93 meters from the nearest road. No published water chemistry exists. The water runs 41°F above ambient in a cold mountain climate.

The spring emerges in the Deer Lodge Valley, a high-elevation basin where the Clark Fork River begins its westward course through western Montana. The Flint Creek Range rises to the west and the Boulder Mountains to the east, both exceeding 8,000 feet. At 5,753 feet, the valley floor supports irrigated hay meadows and cattle ranches interspersed with willow and cottonwood along the river. Annual snowfall reaches 74 inches and annual air temperature averages just 38°F, making this one of Montana's colder inhabited valleys.

History of Deerlodge Prison Ranch Springs

The spring's name ties directly to the Montana State Prison at Deer Lodge, established in 1871 as the territorial prison. The prison ranch operated as a working agricultural facility where inmates raised livestock and crops. The thermal water was reportedly used on the ranch for various purposes. The spring remains on state-managed land designated as a conservation area, and public access is restricted.

This spring is on restricted state land associated with the prison facility; do not attempt to visit without prior authorization from the Montana Department of Corrections. The nearby town of Deer Lodge offers the Old Montana Prison museum complex and full services. Racetrack Cabin, a reservable Forest Service rental 12 km away in the Flint Range, provides backcountry lodging. Winters are severe at this elevation.

Is Deerlodge Prison Ranch Springs worth visiting?

Best for

  • Easy day trips
  • Overnight camping trips
Deerlodge Prison Ranch Springs is well suited for easy day trips and overnight camping trips.
Monthly Climate
19°
Jan
19°
Feb
27°
Mar
34°
Apr
44°
May
53°
Jun
63°
Jul
62°
Aug
52°
Sep
38°
Oct
26°
Nov
17°
Dec
Annual Precip: 24.3 in Annual Snow: 74.4 in
Best Time to Visit
December Air 17°F · Water 79°F · +62° contrast
January Air 19°F · Water 79°F · +60° contrast
February Air 19°F · Water 79°F · +60° contrast
December offers 45°F more contrast than August
Nearby Camping
Racetrack Cabin 7.2 mi away

Overview Racetrack Cabin is a rustic one room log cabin located along Racetrack Creek in the Flint Range of western Montana, near the Continental Divide. The cabin is remotely located and was built to house miners in the 1930s. It was later donated to the Forest Service and refurbished for use by the public.  Guests will be in for a true remote cabin experience with plenty of opportunities for exploration and no distractions from cellular or internet service. There are several motorized and...

Reservable Yes
Reserve on Recreation.gov →
What to Bring
Swimsuit & towel
Water bottle Stay hydrated, especially in hot water
Warm layers Cold air before and after soaking
Camping gear Nearby camping at Racetrack Cabin
Trash bag Pack out what you pack in
References
USGS Quad: (MOUNT POWELL 7.5) · NOAA: 4.0 · AMS Map: BUTTE
Frequently Asked Questions
What is the water temperature at Deerlodge Prison Ranch Springs?
Deerlodge Prison Ranch Springs has a water temperature of 79°F (26°C). This is a warm thermal spring.
Where is Deerlodge Prison Ranch Springs located?
Deerlodge Prison Ranch Springs is located in Powell County, Montana at 5,753 feet elevation, near Deer Lodge. Coordinates: 46.3340°N, 112.8860°W.
How do I get to Deerlodge Prison Ranch Springs?
Deerlodge Prison Ranch Springs has Roadside road access (306 ft from the road).
Is Deerlodge Prison Ranch Springs free to visit?
Deerlodge Prison Ranch Springs has Restricted access. It is managed by UNK.
Can I camp near Deerlodge Prison Ranch Springs?
Yes, Racetrack Cabin is located nearby (7.2 miles away).
Is it safe to soak at Deerlodge Prison Ranch Springs?
Deerlodge Prison Ranch Springs is generally safe for soaking at its recorded temperature. Always tell someone your plans before visiting remote hot springs.
Is Deerlodge Prison Ranch Springs crowded?
Deerlodge Prison Ranch Springs is accessible from a paved road, making it easy to reach. Weekends and holidays may be busier — consider visiting on a weekday for a quieter experience.
What should I bring to Deerlodge Prison Ranch Springs?
Essentials for Deerlodge Prison Ranch Springs: swimsuit, towel, water bottle, warm layers for before and after soaking, camping gear, a trash bag to pack out what you pack in.
Temperature
79°F
Warm Hot Boiling
Water Temp 79°F (26°C)
Avg Air Temp 38°F
Above Ambient +41°F
Great soaking conditions March
Access
Restricted
Road Access Roadside
Distance to Road 306 ft
Land
Ownership Unknown
Agency UNK
Designation State Conservation Area
Unit Deer Lodge State Prison Ranch
Manager OTHS
Protection 4 - No known protection