Prospector Hot Springs

Ravalli County, Idaho · Near Hamilton
46.2350°N, 114.7070°W · 3,215 ft
Hot 3,215 ft Open Backcountry US Forest Service Camping nearby (7.1 mi)
Aerial view of the ground around Prospector Hot Springs LiDAR bare-earth view of the same ground around Prospector Hot Springs
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.

Prospector Hot Springs lies six and a half miles beyond Savage Pass Road in the Nezperce National Forest, Ravalli County, more than fifty miles from Hamilton. Whoever recorded it called the water hot and left it at that. No temperature figure exists. The record lists public access as open. Nothing is on file about a fee.

Location

Low elevation for a backcountry spring, a bit over three thousand feet, in wet country where snow stacks up close to fifteen feet over a winter. The approach from Savage Pass Road is long, and nothing in the record says what the route is like. Forest Service ground. What the ground around the outlet looks like is not recorded.

Best months were never recorded. With that much snow the usable season is the warm half of the year, and the forest is the place to ask about conditions. Camping nearest is Elk Summit Campground, about seven miles away. No fee is listed. Treat the water temperature as unknown and test it before getting near the outlet.

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 Prospector Hot Springs.

Setting
Hillside
The spring sits on a steep slope that climbs to the southeast.
Highest ground nearby
461 ft above the spring
Within a quarter mile, to the southeast
Cross-section through the spring

A slice through the ground from northwest to southeast, about 0.6 miles end to end.

Elevation data: USGS 3D Elevation Program. Aerial imagery: USGS The National Map. Public domain.

Heat Below
87 milliwatts per square meter of heat flow

That's about 1½ times the US average of 65. It's higher than at 25% 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
29°
Jan
31°
Feb
38°
Mar
43°
Apr
51°
May
61°
Jun
72°
Jul
72°
Aug
62°
Sep
47°
Oct
34°
Nov
27°
Dec
Annual Precip: 40.9 in Annual Snow: 179.1 in
Current Conditions
Today 64° Low 44° Mostly Sunny 1% precip
Wednesday 70° Low 48° Sunny 2% precip
Thursday 71° Low 49° Mostly Sunny then Chance Showers And Thunderstorms 52% precip
Friday 64° Low 47° Light Rain Likely then Chance Showers And Thunderstorms 56% precip
Saturday 68° Low 48° Sunny 9% precip
Nearby Camping
Nearby Camping
Elk Summit Campground 7.1 mi away

This sweet destination of a campground rests a short distance from the 1.34 million acre Selway-Bitterroot Wilderness. Located just 24 miles south of Highway 12, you'll have available to you 15 campsites, stock facilities, stunning scenery, and access to some of the nation's wildest country including many remote alpine lakes and mountain peaks. Hoodoo Lake is just a short stroll from the campground.

Reserve on Recreation.gov →
Temperature
Hot
Warm Hot Boiling
Avg Air Temp 47°F
Access
Open
Road Access Backcountry
Nearest Road Savage Pass Road
Distance to Road 6.4 mi
Land
Ownership Federal
Agency US Forest Service
Designation National Forest
Unit Nezperce National Forest
Manager US Forest Service
Protection 3 - Protected, subject to extractive use
Frequently Asked Questions
What is the water temperature at Prospector Hot Springs?
Prospector Hot Springs is classified as hot. An exact temperature measurement has not been recorded.
Where is Prospector Hot Springs located?
Prospector Hot Springs is located in Ravalli County, Idaho at 3,215 feet elevation, near Hamilton. Coordinates: 46.2350°N, 114.7070°W.
How do I get to Prospector Hot Springs?
Prospector Hot Springs has Backcountry road access, with the nearest road being Savage Pass Road (6.4 mi from the road).
Is Prospector Hot Springs free to visit?
Prospector Hot Springs has Open access. It is managed by US Forest Service.
Can I camp near Prospector Hot Springs?
Yes, Elk Summit Campground is located nearby (7.1 miles away).