Thermo Hot Springs

Beaver County, Utah · Near Milford
38.1860°N, 113.1970°W · 5,045 ft
185°F 54°F air · Good soaking weather 5,045 ft Short Walk Camping nearby (17.8 mi)
Very Hot Source, Use Extreme Caution

At 185°F, the source water at Thermo Hot Springs is hot enough to cause burns. Some hot springs this hot have cooler side pools or downstream areas suitable for soaking. Always test the water temperature before entering.

Aerial view of the ground around Thermo Hot Springs

The orange dot marks the spring, in a frame about three quarters of a mile wide.

A second Thermo Hot Springs entry sits in the same patch of Beaver County as the first, under twenty miles from Milford. This vent runs slightly hotter still, well past the point where water scalds, and it is listed as a USGS thermal site with no sign in the record that anyone bathes here. Land ownership and access are blank.

Location

Getting to it means leaving the road and walking something under half a mile across ground that sits around five thousand feet and sees very little rain. Snow is light in winter. The road itself has no recorded name, and no agency is listed as owning or managing the land.

Scalding water, so keep clear of the source and assume any pool fed by it is dangerous until proven otherwise. Winter months are the ones the record favors. The closest camping on file is Hanging Rock Campground, around eighteen miles off. The water sample is from 1963 and shows high dissolved solids with a mildly alkaline pH; treat both as historical readings. Confirm access before driving out.

Terrain

USGS hasn't flown a detailed laser scan here yet, so this view comes from aerial photos and older elevation data.

Setting
Gentle slope
The ground tilts gently up to the north.
Highest ground nearby
17 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.

Seen From Space

Landsat's thermal camera passed over on a clear winter day, December 19, 2022. This spring's heat shows up from about 440 miles up. The brightest yellow marks the warmest ground, roughly 13°F warmer than the land around it.

Aerial view of the ground around Thermo Hot Springs Landsat thermal view of the same ground around Thermo Hot Springs
Aerial Thermal

Drag to compare. The view is about 2½ miles across, and each thermal pixel covers roughly 300 feet of ground, so individual pools blur into one warm patch.

Thermal: Landsat 8/9 surface temperature, USGS (public domain), via Microsoft Planetary Computer. Aerial: USGS The National Map. More springs seen from space.

Heat Below
89 milliwatts per square meter of heat flow

That's about 1½ times the US average of 65. It's higher than at 28% 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
29°
Jan
33°
Feb
44°
Mar
52°
Apr
61°
May
75°
Jun
80°
Jul
79°
Aug
69°
Sep
55°
Oct
42°
Nov
29°
Dec
Annual Precip: 8.6 in Annual Snow: 23.1 in
Best Time to Visit
January Air 29°F · Water 185°F · +157° contrast
December Air 29°F · Water 185°F · +156° contrast
February Air 33°F · Water 185°F · +152° contrast
January offers 52°F more contrast than July
Current Conditions
54°F
Clear S 20.7 mph 38% Good soaking weather
Today 85° Low 53° Sunny 2% precip
Spring is +100° warmer
Wednesday 84° Low 52° Sunny 9% precip
Spring is +101° warmer
Thursday 83° Low 48° Sunny 3% precip
Spring is +102° warmer
Friday 83° Low 46° Sunny 2% precip
Spring is +102° warmer
Saturday 82° Low 46° Sunny 2% precip
Spring is +103° warmer
Water Chemistry Sampled 1963-08-21

The water at Thermo Hot Springs is slightly alkaline (pH 8.1) with 1500 mg/L total dissolved solids. It is notably rich in sodium (supports circulation and skin hydration), sulfate (traditionally used for skin conditions and inflammation), and chloride (natural antiseptic with skin health benefits).

pH 8.1 Slightly Alkaline
pH influences mineral absorption through skin
Higher mineral concentration for therapeutic soaking
Calcium 83 mg/L
May support bone density and joint health
Magnesium 10 mg/L
Known for muscle relaxation and stress relief
Sodium 360 mg/L
Supports circulation and skin hydration
Sulfate 480 mg/L
Traditionally used for skin conditions and inflammation
Chloride 210 mg/L
Natural antiseptic with skin health benefits
Nearby Camping
Nearby Camping
Hanging Rock Campground 17.8 mi away

Overview Hanging Rock Campground is located just off of Highway 21 between the towns of Beaver and Minerville, UT. The campground has six campsites all located alongside the scenic Beaver River. Along with the scenery that the river provides, it also offers what many consider to be the best fising in Beaver County. Recreation The Beaver River provides opportunity for year-round fishing. The Paiute ATV Trail and Beaver Bench Mountain Bike Trail System are located just down the road in Beaver,...

Reservable Yes
Reserve on Recreation.gov →
Temperature
185°F
Warm Hot Boiling
Water Temp 185°F (85°C)
Avg Air Temp 54°F
Above Ambient +131°F
Great soaking conditions September
Access
Road Access Short Walk
Distance to Road 0.4 mi
Frequently Asked Questions
What is the water temperature at Thermo Hot Springs?
Thermo Hot Springs has a water temperature of 185°F (85°C). This is considered a hot spring, well above body temperature.
Where is Thermo Hot Springs located?
Thermo Hot Springs is located in Beaver County, Utah at 5,045 feet elevation, near Milford. Coordinates: 38.1860°N, 113.1970°W.
How do I get to Thermo Hot Springs?
Thermo Hot Springs has Short Walk road access (0.4 mi from the road).
Can I camp near Thermo Hot Springs?
Yes, Hanging Rock Campground is located nearby (17.8 miles away).
What minerals are in the water at Thermo Hot Springs?
Water chemistry analysis shows the presence of pH, Total Dissolved Solids, Calcium, Magnesium, Sodium, Sulfate, Chloride. The pH is 8.1 (slightly alkaline). Total dissolved solids measure 1,500 mg/L.
Is it safe to soak at Thermo Hot Springs?
No, not at the source. The water at Thermo Hot Springs reaches 185°F, which can cause severe burns within seconds. Look for cooled side pools or downstream stretches, and test with a hand before anything else.