Robinson Bar Hot Springs
Drag the handle to compare the two views. The orange dot marks the spring, in a frame about three quarters of a mile wide.
Robinson Bar Hot Springs is in Custer County, about 28 miles from Challis. Hot water, well over comfortable soaking, with moderate dissolved solids and some iron in the 1979 sample. Who owns it is not on file, nor is any access status, so this one needs checking before you plan around it.
National Forest Development Road 454 passes a couple hundred feet from the spring, so the approach is roadside. The country is high, with a year round average a little above freezing and ten feet of snow in an average winter. Precipitation is moderate. The road number says forest, but the record stops short of naming a land owner.
Pole Flat Campground is four or five miles off. The record says go in winter. Ownership and access are unconfirmed, so find out. Temperature is high enough to scald if the source is unmixed; test the water. The sample is from 1979 and showed iron along with the usual minerals.
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 Robinson Bar Hot Springs.
- Setting
- Hillside
- The spring sits on a steep slope that climbs to the southeast.
- Highest ground nearby
- 401 ft above the spring
- Within a quarter mile, to the southeast
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.
That's about twice the US average of 65. It's higher than at 74% 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.
See every spring on the geothermal heat map →
Heat flow estimate: Stanford Thermal Earth Model (Aljubran & Horne, 2024), CC BY 4.0.
The water at Robinson Bar Hot Springs is alkaline (pH 9.4) with 294 mg/L total dissolved solids.
This campground is away from the main road and up the hill overlooking the river and the dredge ponds. Campsites include picnic tables tent pads fire rings with cooking grills. Campground amenities include a vault toilet and drinking water. Sites accommodate trailers and motorhomes up to 32 feet long.
Robinson Bar Hot Springs sits at 5,960 feet above sea level, way above the mile-high mark. You may not feel the altitude strongly, but hot water still dehydrates you faster at elevation. UV is about 24% stronger than at sea level, so bring sunscreen and drink more water than you normally would.
As an Amazon Associate, we earn from qualifying purchases.
Springs Near Robinson Bar Hot Springs
More Springs Around 131°F
Alkaline Springs (pH ~9.4)
Hike 6 waterfalls near Robinson Bar Hot Springs
Looking for more outdoor adventures? Explore waterfall hikes near Robinson Bar Hot Springs, Idaho.