Trail Creek Hot Spring

Also known as: Trail Creek Hot Springs
Valley County, Idaho · Near Cascade
44.6260°N, 115.7490°W · 5,760 ft
122°F 32°F air · Good soaking weather 5,760 ft Open Short Walk US Forest Service Camping nearby (4.2 mi)
Aerial view of the ground around Trail Creek Hot Spring LiDAR bare-earth view of the same ground around Trail Creek 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.

Trail Creek Hot Spring, off Warm Lake Road inside the Boise National Forest, is one of the hot springs in the mountains outside Cascade. The survey on file calls the water hot, more than most people would sit in without letting it cool, and public access is recorded as open. OpenStreetMap carries it with an s on the end, Trail Creek Hot Springs. Cascade is the nearest town, about seventeen miles.

Location

From Warm Lake Road it is a short walk, under two hundred yards, to the spring. The country is high, close to six thousand feet, on national forest land. Snowfall here is enormous by the numbers on file, near two hundred inches a year, and precipitation runs high across the seasons, so the approach will be under snow for a good part of the year.

Winter is the recorded best season, which here means coming in over deep snow. Picnic Point campground sits about four miles away. Linger in the source water and it will burn you, so check temperature before settling in. The reading is from June 1980. The site is open.

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 Trail Creek Hot Spring.

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

A slice through the ground from north to south, about 0.6 miles end to end.

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

Heat Below
116 milliwatts per square meter of heat flow

That's about twice the US average of 65. It's higher than at 68% 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
24°
Jan
25°
Feb
31°
Mar
36°
Apr
43°
May
54°
Jun
66°
Jul
66°
Aug
56°
Sep
41°
Oct
29°
Nov
22°
Dec
Annual Precip: 38.5 in Annual Snow: 198.7 in
Best Time to Visit
December Air 22°F · Water 122°F · +100° contrast
January Air 24°F · Water 122°F · +98° contrast
February Air 25°F · Water 122°F · +97° contrast
December offers 44°F more contrast than July
Current Conditions
32°F
Clear N 0.0 mph 93% Good soaking weather
Today 66° Low 39° Sunny
Spring is +56° warmer
Wednesday 74° Low 44° Sunny 2% precip
Spring is +48° warmer
Thursday 68° Low 42° Rain Showers 82% precip
Spring is +54° warmer
Friday 66° Low 40° Chance Rain Showers 43% precip
Spring is +56° warmer
Saturday 70° Low 42° Sunny 7% precip
Spring is +52° warmer
Water Chemistry Sampled 1980-06-06

The water at Trail Creek Hot Spring is alkaline (pH 9.7).

pH 9.7 Alkaline
pH influences mineral absorption through skin
Calcium 1 mg/L
May support bone density and joint health
Sodium 57 mg/L
Supports circulation and skin hydration
Sulfate 5 mg/L
Traditionally used for skin conditions and inflammation
Chloride 2 mg/L
Natural antiseptic with skin health benefits
Where to Stay

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Nearby Camping
Picnic Point (Id) 4.2 mi away

Overview Picnic Point Campground is located on a bluff overlooking beautiful Warm Lake, at an elevation of 5,300 feet. Visitors enjoy boating, fishing, swimming, hiking and viewing local wildlife. Recreation Warm Lake offers great fishing opportunities for cutthroat, rainbow, lake and bull trout. Boating, canoeing and swimming are popular activities. A boat ramp is located at neighboring Shoreline Campground. Billy Rice Swim Beach is within walking distance, offering a day-use site for picni...

Reservable Yes
Reserve on Recreation.gov →
Mile-High Advisory 5,760 ft

Trail Creek Hot Spring sits at 5,760 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 23% stronger than at sea level, so bring sunscreen and drink more water than you normally would.

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Temperature
122°F
Warm Hot Boiling
Water Temp 122°F (50°C)
Avg Air Temp 41°F
Above Ambient +81°F
Great soaking conditions September
Access
Open
Road Access Short Walk
Nearest Road Warm Lake Road
Distance to Road 477 ft
Land
Ownership Federal
Agency US Forest Service
Designation National Forest
Unit Boise National Forest
Manager US Forest Service
Protection 3 - Protected, subject to extractive use
Frequently Asked Questions
What is the water temperature at Trail Creek Hot Spring?
Trail Creek Hot Spring has a water temperature of 122°F (50°C). This is considered a hot spring, well above body temperature.
Where is Trail Creek Hot Spring located?
Trail Creek Hot Spring is located in Valley County, Idaho at 5,760 feet elevation, near Cascade. Coordinates: 44.6260°N, 115.7490°W.
How do I get to Trail Creek Hot Spring?
Trail Creek Hot Spring has Short Walk road access, with the nearest road being Warm Lake Road (477 ft from the road).
Is Trail Creek Hot Spring free to visit?
Trail Creek Hot Spring has Open access. It is managed by US Forest Service.
Can I camp near Trail Creek Hot Spring?
Yes, Picnic Point (Id) is located nearby (4.2 miles away).
What minerals are in the water at Trail Creek Hot Spring?
Water chemistry analysis shows the presence of pH, Calcium, Sodium, Sulfate, Chloride. The pH is 9.7 (alkaline).
Is it safe to soak at Trail Creek Hot Spring?
With care. At 122°F Trail Creek 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.