Warfield Hot Spring

Blaine County, Idaho · Near Ketchum
43.6410°N, 114.4870°W · 6,250 ft
124°F 39°F air · Good soaking weather 6,250 ft Roadside Camping nearby (9.8 mi)
Aerial view of the ground around Warfield Hot Spring LiDAR bare-earth view of the same ground around Warfield Hot Spring
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.

Warfield Hot Spring is the name the survey uses; Wikipedia calls the same place Frenchman's Hot Springs or Frenchman's Bend. It lies along Warm Springs Creek outside Ketchum in Blaine County, with source water hot enough that it needs cooling before anyone sits in it. No owner appears in the record, though Wikipedia places it within the Sawtooth National Forest. No public access status is on file.

Location

You can pull up almost on top of it, roughly a hundred feet off an unnamed road. Above six thousand feet, so winter means snow, over a hundred inches in an average year, with the climate dry the rest of the time. Ketchum is six and a half miles away by the record and eleven by the Wikipedia entry.

The coldest months of the year are the ones recommended. Easley Campground is about ten miles off. The source is hot, and the pools Wikipedia describes will vary; test before settling in. Access is not recorded, so confirm locally. The temperature was measured in May 1988.

History of Warfield Hot Spring

Wikipedia describes Frenchman's Hot Springs, also known as Frenchman's Bend or Warfield Hot Springs, as three wide, shallow pools along Warm Springs Creek in the Sawtooth National Forest, walled with rock and floored with sand and gravel.

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 Warfield Hot Spring.

Setting
Canyon floor
Steep ground climbs away on both sides of the spring.
Highest ground nearby
477 ft above the spring
Within a quarter mile, to the north
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
105 milliwatts per square meter of heat flow

That's about 1½ times the US average of 65. It's higher than at 55% 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
19°
Jan
22°
Feb
29°
Mar
34°
Apr
44°
May
55°
Jun
65°
Jul
64°
Aug
54°
Sep
40°
Oct
28°
Nov
17°
Dec
Annual Precip: 22.4 in Annual Snow: 108.1 in
Best Time to Visit
December Air 17°F · Water 124°F · +107° contrast
January Air 19°F · Water 124°F · +105° contrast
February Air 22°F · Water 124°F · +102° contrast
December offers 48°F more contrast than July
Current Conditions
39°F
Clear NW 33.0 mph 75% Good soaking weather
Tuesday 64° Low 34° Sunny
Spring is +60° warmer
Wednesday 69° Low 40° Sunny 13% precip
Spring is +55° warmer
Thursday 63° Low 45° Light Rain Likely then Showers And Thunderstorms 84% precip
Spring is +61° warmer
Friday 64° Low 40° Sunny then Slight Chance Light Rain 18% precip
Spring is +60° warmer
Saturday 65° Low 39° Sunny 5% precip
Spring is +59° warmer
Water Chemistry Sampled 1988-05-03

The water at Warfield Hot Spring is alkaline (pH 9.0).

pH 9.0 Alkaline
pH influences mineral absorption through skin
Calcium 2 mg/L
May support bone density and joint health
Sodium 66 mg/L
Supports circulation and skin hydration
Sulfate 40 mg/L
Traditionally used for skin conditions and inflammation
Chloride 6 mg/L
Natural antiseptic with skin health benefits
Where to Stay

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Nearby Camping
Easley Campground 9.8 mi away

Overview Easley Campground is located along the beautiful Big Wood River at an elevation of 6800 feet, conveniently close to Ketchum, Idaho only 14 miles south. Visitors enjoy fishing, hiking and soaking at Easley Hot Springs.Recreation Easley is part of the Sawtooth National Recreation Area, where outdoor activities abound. Fly-fishing for rainbow, brown and brook trout is popular on the Big Wood River, as is float tubing. The 20-mile Harriman Trail passes through the campground, offering...

Reservable Yes
Reserve on Recreation.gov →
Mile-High Advisory 6,250 ft

Warfield Hot Spring sits at 6,250 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 25% stronger than at sea level, so bring sunscreen and drink more water than you normally would.

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Temperature
124°F
Warm Hot Boiling
Water Temp 124°F (51°C)
Avg Air Temp 39°F
Above Ambient +85°F
Great soaking conditions September
Access
Road Access Roadside
Distance to Road 103 ft
Frequently Asked Questions
What is the water temperature at Warfield Hot Spring?
Warfield Hot Spring has a water temperature of 124°F (51°C). This is considered a hot spring, well above body temperature.
Where is Warfield Hot Spring located?
Warfield Hot Spring is located in Blaine County, Idaho at 6,250 feet elevation, near Ketchum. Coordinates: 43.6410°N, 114.4870°W.
How do I get to Warfield Hot Spring?
Warfield Hot Spring has Roadside road access (103 ft from the road).
Can I camp near Warfield Hot Spring?
Yes, Easley Campground is located nearby (9.8 miles away).
What minerals are in the water at Warfield Hot Spring?
Water chemistry analysis shows the presence of pH, Calcium, Sodium, Sulfate, Chloride. The pH is 9.0 (alkaline).
Is it safe to soak at Warfield Hot Spring?
With care. At 124°F Warfield Hot Spring is hot enough to need short sessions, fifteen to twenty minutes, and plenty of water. Enter slowly and get out if you feel light-headed.
Sources: USGS NWIS, Wikipedia