At 181°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.
Thermo Hot Springs erupts at 181 degrees Fahrenheit near Milford in Beaver County, ranking among Utah's hottest documented thermal features with water emerging 126.9 degrees above ambient air temperature. This exceptional geothermal system flows at 5,045 feet elevation just 43 meters from the nearest road, delivering sulfate-dominant water with 1,490 milligrams per liter of total dissolved solids.
The spring emerges in the Escalante Desert at 5,045 feet elevation, where basin-and-range topography defines the landscape of western Beaver County. The surrounding terrain receives minimal precipitation at 8.6 inches annually with 23.1 inches of snow, supporting sparse desert vegetation dominated by shadscale, greasewood, and scattered sagebrush. The Mineral Mountains rise to the east while flat basin floors extend westward toward the Wah Wah Range, creating the characteristic open desert setting of Utah's Great Basin province.
History of Thermo Hot Springs
The spring's name reflects the geothermal properties that have attracted attention since early settlement, with temperature being the defining characteristic. The location supported various geothermal exploration and development schemes across the 20th century, though large-scale commercial power generation never materialized. The site remains notable primarily for its exceptional heat output among Utah thermal springs.
Approach with extreme caution; 181-degree water causes severe burns on contact and steam vents present scalding hazards. The roadside location permits easy observation but prohibits safe bathing. Visit during cooler months when desert conditions moderate, though the spring flows year-round. Bring adequate water and sun protection for the exposed desert environment. Hanging Rock Campground provides developed facilities 29.4 kilometers away along the Beaver River.
Is Thermo Hot Springs worth visiting?
Best for
Observing powerful hot springs
Easy day trips
Overnight camping trips
Mineral-rich therapeutic bathing
Not ideal for
Casual soaking
Thermo Hot Springs is well suited for observing powerful hot springs and easy day trips.
Monthly Climate
29°Jan
34°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 inAnnual Snow: 23.1 in
Best Time to Visit
JanuaryAir 29°F · Water 181°F · +153° contrast
DecemberAir 29°F · Water 181°F · +152° contrast
FebruaryAir 34°F · Water 181°F · +148° contrast
January offers 52°F more contrast than July
USGS Field Measurements
Recent Temperature
170.1°F
(76.7°C)Measured Jul 11, 1967
Water ChemistrySampled 1967-07-11
The water at Thermo Hot Springs is slightly alkaline (pH 7.4) with 1490 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).
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,...
What is the water temperature at Thermo Hot Springs?
Thermo Hot Springs has a water temperature of 181°F (83°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: 38.1720°N, 113.2040°W.
How do I get to Thermo Hot Springs?
Thermo Hot Springs has Roadside road access (141 ft from the road).
Can I camp near Thermo Hot Springs?
Yes, Hanging Rock Campground is located nearby (18.3 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 7.4 (slightly alkaline). Total dissolved solids measure 1,490 mg/L.
Is it safe to soak at Thermo Hot Springs?
The water at Thermo Hot Springs reaches 181°F, which can cause severe burns. Do not enter the source pool directly — look for cooled side pools or downstream areas where the water has cooled to a safe temperature. Access may be on private land or unconfirmed — verify current conditions before visiting. Always tell someone your plans before visiting remote hot springs.
Is Thermo Hot Springs crowded?
Thermo Hot Springs is accessible from a paved road, making it easy to reach. Weekends and holidays may be busier — consider visiting on a weekday for a quieter experience.
What should I bring to Thermo Hot Springs?
Essentials for Thermo Hot Springs: swimsuit, towel, water bottle, camping gear, a trash bag to pack out what you pack in. The water is over 110°F — test the temperature before entering and watch for scalding near the source.