Grantsville Warm Springs

Tooele County, Utah · Near Grantsville
40.6470°N, 112.5240°W · 4,240 ft
77°F 48°F air · Good soaking weather 4,240 ft Open Roadside SLB Camping nearby (11.1 mi)
Aerial view of the ground around Grantsville Warm Springs LiDAR bare-earth view of the same ground around Grantsville Warm 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.

Grantsville Warm Springs is a warm, extremely salty spring on state trust land in Tooele County, a few miles outside Grantsville. Access is listed as open. The dissolved-solids figure is very high; this is brine. Temperature is mild, warm to the touch and no more.

Location

The road comes within about 150 feet, on the State Trust Lands I-80 Block, which carries a special recreation management designation. Valley floor, a bit above four thousand feet. This is on the drier side of the state listings, with roughly two feet of snow a winter and modest rainfall.

The cold months are the ones flagged. The Boy Scout campground is about eleven miles away. No fee is recorded. The temperature and chemistry both come from a 1978 sample, so treat the numbers as dated. Nothing on file describes a pool or any improvements, and there is no photo.

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 Grantsville Warm Springs.

Setting
Open ground
Flat, open ground all around.
Highest ground nearby
21 ft above the spring
Within a quarter mile, to the west
Cross-section through the spring

A slice through the ground from southwest to northeast, about 0.6 miles end to end.

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

Heat Below
114 milliwatts per square meter of heat flow

That's about twice the US average of 65. It's higher than at 65% 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
28°
Jan
34°
Feb
44°
Mar
51°
Apr
60°
May
73°
Jun
82°
Jul
80°
Aug
69°
Sep
54°
Oct
42°
Nov
30°
Dec
Annual Precip: 15.2 in Annual Snow: 26.7 in
Best Time to Visit
January Air 28°F · Water 77°F · +49° contrast
December Air 30°F · Water 77°F · +47° contrast
February Air 34°F · Water 77°F · +44° contrast
January offers 54°F more contrast than July
Current Conditions
48°F
Clear S 29.0 mph 43% Good soaking weather
Today 80° Low 62° Partly Sunny 2% precip
Wednesday 85° Low 63° Mostly Sunny then Chance Showers And Thunderstorms 25% precip
Thursday 83° Low 59° Chance Showers And Thunderstorms then Slight Chance Showers And Thunderstorms 29% precip
Friday 76° Low 54° Sunny 7% precip
Spring is +1° warmer
Saturday 76° Low 55° Sunny 2% precip
Spring is +1° warmer
Water Chemistry Sampled 1978-06-26

The water at Grantsville Warm Springs is slightly alkaline (pH 7.5) with 26700 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).

pH 7.5 Slightly Alkaline
pH influences mineral absorption through skin
Higher mineral concentration for therapeutic soaking
Calcium 750 mg/L
May support bone density and joint health
Magnesium 200 mg/L
Known for muscle relaxation and stress relief
Sodium 9,000 mg/L
Supports circulation and skin hydration
Sulfate 630 mg/L
Traditionally used for skin conditions and inflammation
Chloride 16,000 mg/L
Natural antiseptic with skin health benefits
Nearby Camping
Nearby Camping
Boy Scout 11.1 mi away

Overview Boy Scout Campground is located southwest of Grantsville, Utah, in South Willow Canyon at an elevation of 6,320 feet. Visitors enjoy exploring local trails.Recreation The multi-use Stansbury Front Trail and Medina Flat Trail begin across the road from the entrance, offering access to the rugged Deseret Peak Wilderness. Willow Creek offers rainbow and brown trout fishing.Facilities This primitive campground contains one group site that can accommodate up to 35 people, 5 single family...

Reservable Yes
Reserve on Recreation.gov →
Temperature
77°F
Warm Hot Boiling
Water Temp 77°F (25°C)
Avg Air Temp 54°F
Above Ambient +23°F
Mild soaking conditions September
Access
Open
Road Access Roadside
Distance to Road 153 ft
Land
Ownership State
Agency SLB
Designation SRMA
Unit State Trust Lands I-80 Block
Manager SLB
Protection 3 - Protected, subject to extractive use
Frequently Asked Questions
What is the water temperature at Grantsville Warm Springs?
Grantsville Warm Springs has a water temperature of 77°F (25°C). This is a warm thermal spring.
Where is Grantsville Warm Springs located?
Grantsville Warm Springs is located in Tooele County, Utah at 4,240 feet elevation, near Grantsville. Coordinates: 40.6470°N, 112.5240°W.
How do I get to Grantsville Warm Springs?
Grantsville Warm Springs has Roadside road access (153 ft from the road).
Is Grantsville Warm Springs free to visit?
Grantsville Warm Springs has Open access. It is managed by SLB.
Can I camp near Grantsville Warm Springs?
Yes, Boy Scout is located nearby (11.1 miles away).
What minerals are in the water at Grantsville Warm Springs?
Water chemistry analysis shows the presence of pH, Total Dissolved Solids, Calcium, Magnesium, Sodium, Sulfate, Chloride. The pH is 7.5 (slightly alkaline). Total dissolved solids measure 26,700 mg/L.
Sources: USGS NWIS