Unnamed Thermal Spring
This unnamed 72°F spring flows 18 degrees above the 54°F ambient temperature near Fillmore in Millard County, emerging at 4,761 feet along Hot Spring Road. The roadside location (27 meters from pavement) reflects long-recognized thermal activity. Water chemistry shows high mineralization: 5,000 mg/L TDS with elevated sulfate (1,100 mg/L) and chloride (1,900 mg/L), plus recent USGS measurement of 40.5°C (105°F)—significantly warmer than the historical 72°F record.
The spring sits in a valley receiving 14.5 inches of annual precipitation and 46.8 inches of snow, indicating higher elevation and moisture than the surrounding Sevier Desert. Vegetation includes sagebrush, juniper, and valley grassland. The Pahvant Range rises to the west. Hot Spring Road's name documents the thermal feature's local importance. Adelaide Campground lies 16 kilometers north in Corn Creek Canyon at the range's southern end.
The spring's name appears only as Hot Spring Road; no specific name for the source itself is recorded. The area's thermal waters have been known since Indigenous habitation. Early Mormon settlement of Fillmore occurred in 1851 when it briefly served as Utah's territorial capital. This spring's development history is undocumented beyond the road name indicating local awareness.
Roadside access (27 meters from pavement) makes this among the easiest thermal springs to visit. Recent USGS data shows 105°F water, contradicting the historical 72°F record—verify current conditions before visiting. High mineral content (5,000 mg/L TDS) affects taste and bathing quality. Adelaide Campground, 16 kilometers away, provides base-camp access to Pahvant Mountain trails.
Is this spring worth visiting?
Best for
- Easy day trips
- Overnight camping trips
- Mineral-rich therapeutic bathing
The water at This spring is neutral (pH 6.8) with 5000 mg/L total dissolved solids. It is notably rich in calcium (may support bone density and joint health), magnesium (known for muscle relaxation and stress relief), and sodium (supports circulation and skin hydration).
Overview Adelaide Campground is located in Corn Creek Canyon on the south end of the Pahvant Mountain Range near Kanosh, Utah.Recreation Corn Creek offers brown and rainbow trout fishing. Hiking and biking trails begin nearby, and the Paiute ATV trail can be easily accessed from the site.Facilities The campground offers 1 group site which can accommodate 48 guests and up to 15 vehicles. 9 individual sites are also available. These sites can accommodate 6 to 8 guests and 2 vehicles. All of th...