Goldbug Hot Spring

Also known as: Goldbug Hot Springs
Lemhi County, Idaho · Near Salmon
44.9050°N, 113.9290°W · 5,320 ft
113°F 34°F air · Good soaking weather 5,320 ft Open Hike US Forest Service Camping nearby (8.4 mi)

A walk-in spring on Salmon National Forest land in Lemhi County, Goldbug Hot Spring sits 19 miles or so out of Salmon. The water is hot, 113 degrees on file. Public access shows as open. OpenStreetMap calls it Goldbug Hot Springs. The nearest camp on record, about eight miles off, is Williams Lake Campground.

Location

From the Salmon River Scenic Byway it is about a mile and a half on foot. The spring sits around 5,300 feet in country that takes close to seven feet of snow a winter with moderate precipitation. Wikipedia puts the pools on Warm Spring Creek. A photograph is on record.

On file the favored season is winter. A mile and a half through seven feet of snow counts as a real walk, so plan for it. The water at 113 is at the low edge of hot, and Wikipedia notes that pool temperatures vary with the season. Chemistry on record dates to 1980. Williams Lake Campground is the nearest listed camping.

History of Goldbug Hot Spring

Wikipedia describes Goldbug as a hot spring in the Salmon-Challis National Forest about 20 miles south of Salmon, along Warm Spring Creek, with about six waterfall-fed pools. It lists the temperature at 113 degrees and notes that the pools vary with the time of year.

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 Goldbug Hot Spring.

Aerial view of the ground around Goldbug Hot Spring LiDAR bare-earth view of the same ground around Goldbug 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.

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

That's about twice the US average of 65. It's higher than at 67% 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
21°
Jan
23°
Feb
31°
Mar
37°
Apr
48°
May
59°
Jun
69°
Jul
68°
Aug
58°
Sep
43°
Oct
30°
Nov
19°
Dec
Annual Precip: 21.1 in Annual Snow: 81.6 in
Best Time to Visit
December Air 19°F · Water 113°F · +94° contrast
January Air 21°F · Water 113°F · +92° contrast
February Air 23°F · Water 113°F · +90° contrast
December offers 50°F more contrast than July
Current Conditions
34°F
Clear N 0.0 mph 86% Good soaking weather
Today 72° Low 46° Sunny
Spring is +41° warmer
Wednesday 76° Low 51° Sunny
Spring is +37° warmer
Thursday 73° Low 50° Light Rain Likely then Showers And Thunderstorms Likely 71% precip
Spring is +40° warmer
Friday 69° Low 47° Chance Light Rain then Chance Showers And Thunderstorms 52% precip
Spring is +44° warmer
Saturday 73° Low 49° Sunny 11% precip
Spring is +40° warmer
Water Chemistry Sampled 1980-08-05

The water at Goldbug Hot Spring is slightly alkaline (pH 7.8).

pH 7.8 Slightly Alkaline
pH influences mineral absorption through skin
Calcium 73 mg/L
May support bone density and joint health
Magnesium 16 mg/L
Known for muscle relaxation and stress relief
Sodium 5 mg/L
Supports circulation and skin hydration
Sulfate 120 mg/L
Traditionally used for skin conditions and inflammation
Chloride 2 mg/L
Natural antiseptic with skin health benefits
Where to Stay

Some links are affiliate links. We may earn a commission at no extra cost to you.

Nearby Camping
Williams Lake Campground 8.4 mi away

4500-foot elevation. Picnic area on Williams Lake, with the trailhead to 2 walk-in or boat-in campsites. The picic area and fishing area are both fully accessible. Five tables with connecting walkways overlook scenic vistas of the lake and surrounding mountains. Fishing for rainbow trout in the lake, and fantastic fly fishing in the inlet. Trailhead for Thunder Mountain National Historic Trail at the end of FR 028. Ice fishing in the winter. Full-service resort on south shore of the lake incl...

Reserve on Recreation.gov →
Mile-High Advisory 5,320 ft

Goldbug Hot Spring sits at 5,320 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 21% 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.

Temperature
113°F
Warm Hot Boiling
Water Temp 113°F (45°C)
Avg Air Temp 42°F
Above Ambient +71°F
Great soaking conditions September
Access
Open
Road Access Hike
Nearest Road Salmon River Scenic Byway
Distance to Road 1.4 mi
Land
Ownership Federal
Agency US Forest Service
Designation National Forest
Unit Salmon National Forest
Manager US Forest Service
Protection 3 - Protected, subject to extractive use
Frequently Asked Questions
What is the water temperature at Goldbug Hot Spring?
Goldbug Hot Spring has a water temperature of 113°F (45°C). This is considered a hot spring, well above body temperature.
Where is Goldbug Hot Spring located?
Goldbug Hot Spring is located in Lemhi County, Idaho at 5,320 feet elevation, near Salmon. Coordinates: 44.9050°N, 113.9290°W.
How do I get to Goldbug Hot Spring?
Goldbug Hot Spring has Hike road access, with the nearest road being Salmon River Scenic Byway (1.4 mi from the road).
Is Goldbug Hot Spring free to visit?
Goldbug Hot Spring has Open access. It is managed by US Forest Service.
Can I camp near Goldbug Hot Spring?
Yes, Williams Lake Campground is located nearby (8.4 miles away).
What minerals are in the water at Goldbug Hot Spring?
Water chemistry analysis shows the presence of pH, Calcium, Magnesium, Sodium, Sulfate, Chloride. The pH is 7.8 (slightly alkaline).
Is it safe to soak at Goldbug Hot Spring?
With care. At 113°F Goldbug 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.