Astoria Mineral Hot Springs

Teton County, Wyoming · Near Hoback
43.3000°N, 110.7750°W · 5,868 ft
99°F 34°F air · Good soaking weather 5,868 ft Open Roadside US Forest Service Camping nearby (7.2 mi)

Astoria Mineral Hot Springs sits just outside Hoback in Teton County, Wyoming, on Teton National Forest land. The water is body temperature, soakable without being hot, and the record lists access as open. West Johnny Counts Road passes close enough that the record calls this roadside.

Location

The road is within a stone's throw. National forest ground, a bit under six thousand feet, with deep winters, nearly twelve feet of snow in a season, and a dryish summer. Station Creek Campground is the nearest listed, about seven miles.

Winter ranks best on the record, which with this much snow means checking whether the road is plowed. Access is open and no fee is listed. Water chemistry on file comes from a 1971 sample, so the neutral pH figure is half a century old. The temperature is gentle, no scald risk.

History of Astoria Mineral Hot Springs

The USGS carries this spring as a numbered thermal site, and the only chemistry on file is that 1971 sample showing calcium, magnesium, sodium, sulfate and chloride.

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 Astoria Mineral Hot Springs.

Aerial view of the ground around Astoria Mineral Hot Springs LiDAR bare-earth view of the same ground around Astoria Mineral 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.

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

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

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

Heat Below
94 milliwatts per square meter of heat flow

That's about 1½ times the US average of 65. It's higher than at 38% 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
24°
Feb
32°
Mar
38°
Apr
45°
May
58°
Jun
68°
Jul
67°
Aug
57°
Sep
42°
Oct
28°
Nov
20°
Dec
Annual Precip: 27.9 in Annual Snow: 140.8 in
Best Time to Visit
December Air 20°F · Water 99°F · +80° contrast
January Air 21°F · Water 99°F · +78° contrast
February Air 24°F · Water 99°F · +75° contrast
December offers 49°F more contrast than July
Current Conditions
34°F
Clear N 0.0 mph 86% Good soaking weather
Tuesday 71° Low 30° Mostly Sunny
Spring is +28° warmer
Wednesday 74° Low 37° Slight Chance Rain Showers then Slight Chance Showers And Thunderstorms 18% precip
Spring is +25° warmer
Thursday 70° Low 43° Showers And Thunderstorms 83% precip
Spring is +29° warmer
Friday 65° Low 40° Chance Rain Showers then Chance Showers And Thunderstorms 34% precip
Spring is +34° warmer
Saturday 68° Low 34° Slight Chance Rain Showers then Slight Chance Showers And Thunderstorms 17% precip
Spring is +31° warmer
Water Chemistry Sampled 1971-08-04

The water at Astoria Mineral Hot Springs is slightly alkaline (pH 7.3). It is notably rich in calcium (may support bone density and joint health), magnesium (known for muscle relaxation and stress relief), and sulfate (traditionally used for skin conditions and inflammation).

pH 7.3 Slightly Alkaline
pH influences mineral absorption through skin
Calcium 180 mg/L
May support bone density and joint health
Magnesium 46 mg/L
Known for muscle relaxation and stress relief
Sodium 120 mg/L
Supports circulation and skin hydration
Sulfate 540 mg/L
Traditionally used for skin conditions and inflammation
Chloride 88 mg/L
Natural antiseptic with skin health benefits
Where to Stay

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Nearby Camping
Station Creek Campground 7.2 mi away

Overview Station Creek Campground is located in beautiful Snake River Canyon, just 27 miles southwest of Jackson, in western Wyoming. It sits at an elevation of 5,800 feet. Visitors enjoy fishing and whitewater rafting on the Snake River.Recreation Fly-fishing for cutthroat, rainbow and brown trout is a popular activity on the Snake, as is whitewater rafting and kayaking. A boat ramp is nearby.Facilities The campground offers two group campsites that can accommodate up to 40 people each. The...

Reservable Yes
Reserve on Recreation.gov →
Mile-High Advisory 5,868 ft

Astoria Mineral Hot Springs sits at 5,868 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
99°F
Warm Hot Boiling
Water Temp 99°F (37°C)
Avg Air Temp 42°F
Above Ambient +57°F
Good soaking conditions September
Access
Open
Road Access Roadside
Nearest Road West Johnny Counts Road
Distance to Road 249 ft
Land
Ownership Federal
Agency US Forest Service
Designation National Forest
Unit Teton National Forest
Manager US Forest Service
Protection 3 - Protected, subject to extractive use
Frequently Asked Questions
What is the water temperature at Astoria Mineral Hot Springs?
Astoria Mineral Hot Springs has a water temperature of 99°F (37°C). This is a warm thermal spring.
Where is Astoria Mineral Hot Springs located?
Astoria Mineral Hot Springs is located in Teton County, Wyoming at 5,868 feet elevation, near Hoback. Coordinates: 43.3000°N, 110.7750°W.
How do I get to Astoria Mineral Hot Springs?
Astoria Mineral Hot Springs has Roadside road access, with the nearest road being West Johnny Counts Road (249 ft from the road).
Is Astoria Mineral Hot Springs free to visit?
Astoria Mineral Hot Springs has Open access. It is managed by US Forest Service.
Can I camp near Astoria Mineral Hot Springs?
Yes, Station Creek Campground is located nearby (7.2 miles away).
What minerals are in the water at Astoria Mineral Hot Springs?
Water chemistry analysis shows the presence of pH, Calcium, Magnesium, Sodium, Sulfate, Chloride. The pH is 7.3 (slightly alkaline).
Sources: USGS NWIS