Barney Hot Springs

Butte County, Idaho · Near Arco
44.2690°N, 113.4490°W · 6,435 ft
82°F 36°F air · Good soaking weather 6,435 ft Open Roadside Bureau of Land Management Camping nearby (13.2 mi)
Aerial view of the ground around Barney Hot Springs LiDAR bare-earth view of the same ground around Barney 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.

Barney Hot Springs sits beside Pahsimeroi Road in Butte County, Idaho, on BLM land under the Challis Field Office. Arco is the nearest town and it is forty-five miles away. The water is warm, in the low eighties, under body temperature, so it is a warm spring in practice despite the name. Access is open.

Location

High valley, around sixty-four hundred feet, cold on average, with five feet of snow over a winter and not much rain. The spring is five feet from the road. Meadow Lake Campground is the nearest on record, thirteen miles off. Public land, open, no designation beyond that.

Our climate ranking likes winter here. Pahsimeroi Road runs right past, so winter access depends on the road. The camping option listed is Meadow Lake, some distance away. Water chemistry comes from 1983 and runs alkaline. Warm water only; nobody is going to overheat in it. No fee is recorded.

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 Barney Hot Springs.

Setting
Open ground
Flat, open ground all around.
Highest ground nearby
60 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
122 milliwatts per square meter of heat flow

That's about twice the US average of 65. It's higher than at 73% 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
18°
Jan
19°
Feb
28°
Mar
34°
Apr
46°
May
58°
Jun
68°
Jul
67°
Aug
57°
Sep
41°
Oct
27°
Nov
16°
Dec
Annual Precip: 15.6 in Annual Snow: 62.5 in
Best Time to Visit
December Air 16°F · Water 82°F · +66° contrast
January Air 18°F · Water 82°F · +64° contrast
February Air 19°F · Water 82°F · +63° contrast
December offers 52°F more contrast than July
Current Conditions
36°F
Clear N 0.0 mph 75% Good soaking weather
Tuesday 67° Low 36° Sunny
Spring is +15° warmer
Wednesday 72° Low 42° Sunny 9% precip
Spring is +10° warmer
Thursday 67° Low 48° Light Rain Likely then Showers And Thunderstorms 80% precip
Spring is +15° warmer
Friday 64° Low 45° Chance Light Rain 29% precip
Spring is +18° warmer
Saturday 67° Low 42° Sunny 11% precip
Spring is +15° warmer
Water Chemistry Sampled 1983-11-17

The water at Barney Hot Springs is slightly alkaline (pH 8.2).

pH 8.2 Slightly Alkaline
pH influences mineral absorption through skin
Calcium 36 mg/L
May support bone density and joint health
Magnesium 19 mg/L
Known for muscle relaxation and stress relief
Sodium 9 mg/L
Supports circulation and skin hydration
Sulfate 35 mg/L
Traditionally used for skin conditions and inflammation
Chloride 5 mg/L
Natural antiseptic with skin health benefits
Nearby Camping
Nearby Camping
Meadow Lake Campground 13.2 mi away

Overview Meadow Lake Campground is located on the Leadore Ranger District of the Salmon-Challis National Forest. This high alpine campground sits at an elevation of 9,160 feet in the Lemhi Mountain Range, 22 miles from Leadore, Idaho.Recreation There's no lack of recreational opportunities around Meadow Lake Campground. The lake is stocked twice a year so the fish are always biting. Fish from the bank or carry your boat down to the lake and try from the water, as there is no boat ramp or boat...

Reservable Yes
Reserve on Recreation.gov →
Mile-High Advisory 6,435 ft

Barney Hot Springs sits at 6,435 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 26% stronger than at sea level, so bring sunscreen and drink more water than you normally would.

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Temperature
82°F
Warm Hot Boiling
Water Temp 82°F (28°C)
Avg Air Temp 40°F
Above Ambient +42°F
Mild soaking conditions September
Access
Open
Road Access Roadside
Nearest Road Pahsimeroi Road
Distance to Road 5 ft
Land
Ownership Federal
Agency Bureau of Land Management
Designation PUB
Unit Challis Field Office
Manager Bureau of Land Management
Protection 3 - Protected, subject to extractive use
Frequently Asked Questions
What is the water temperature at Barney Hot Springs?
Barney Hot Springs has a water temperature of 82°F (28°C). This is a warm thermal spring.
Where is Barney Hot Springs located?
Barney Hot Springs is located in Butte County, Idaho at 6,435 feet elevation, near Arco. Coordinates: 44.2690°N, 113.4490°W.
How do I get to Barney Hot Springs?
Barney Hot Springs has Roadside road access, with the nearest road being Pahsimeroi Road (5 ft from the road).
Is Barney Hot Springs free to visit?
Barney Hot Springs has Open access. It is managed by Bureau of Land Management.
Can I camp near Barney Hot Springs?
Yes, Meadow Lake Campground is located nearby (13.2 miles away).
What minerals are in the water at Barney Hot Springs?
Water chemistry analysis shows the presence of pH, Calcium, Magnesium, Sodium, Sulfate, Chloride. The pH is 8.2 (slightly alkaline).
Sources: USGS NWIS