Big Warm Springs

Tooele County, Utah · Near Grantsville
40.7430°N, 112.6420°W · 4,220 ft
72°F 4,220 ft Open Roadside SLB Camping nearby (17.5 mi)

Big Warm Springs is a state trust land spring in Tooele County, a dozen miles out of Grantsville, and the record marks it open. The water runs warm, well short of hot. What stands out is its salt: the 1966 sample shows a heavy load of dissolved solids, over eight thousand milligrams per liter, so expect brackish water.

Location

The ground is state trust land in a block along Interstate 80, listed as an SRMA, a recreation management designation. You can pull over and walk a couple hundred feet. The valley floor sits a little over four thousand feet and gets real winter, twenty-some inches of snow most years, though the spring is close enough to the road that snow matters less here than at a trailhead. Lower Narrows Campground is the closest camping named, about 17 miles off.

Winter is the visiting season on record. Access is open, the pull-off is roadside, and there is no fee on file. Come knowing you will find warm salty water. The chemistry is from 1966, so conditions could have drifted since.

Monthly Climate
29°
Jan
34°
Feb
44°
Mar
52°
Apr
61°
May
73°
Jun
82°
Jul
80°
Aug
70°
Sep
55°
Oct
42°
Nov
31°
Dec
Annual Precip: 12.3 in Annual Snow: 22.5 in
Best Time to Visit
January Air 29°F · Water 72°F · +43° contrast
December Air 31°F · Water 72°F · +41° contrast
February Air 34°F · Water 72°F · +38° contrast
January offers 53°F more contrast than July
Current Conditions
Clear
Labor Day 75° Low 58° Sunny 1% precip
Tuesday 78° Low 54° Sunny
Wednesday 82° Low 55° Sunny
Thursday 85° Low 58° Sunny
Friday 87° Low 64° Sunny 3% precip
Water Chemistry Sampled 1966-05-27

The water at Big Warm Springs is slightly alkaline (pH 7.7) with 8110 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 7.7 Slightly Alkaline
pH influences mineral absorption through skin
Higher mineral concentration for therapeutic soaking
Calcium 140 mg/L
May support bone density and joint health
Magnesium 85 mg/L
Known for muscle relaxation and stress relief
Sodium 2,750 mg/L
Supports circulation and skin hydration
Sulfate 318 mg/L
Traditionally used for skin conditions and inflammation
Chloride 4,420 mg/L
Natural antiseptic with skin health benefits
Where to Stay

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Nearby Camping
Lower Narrows Campground 17.5 mi away

Overview Upper Narrows Campground is located southwest of Grantsville, Utah, in South Willow Canyon at an elevation of 6,840 feet. Visitors enjoy exploring local trails. Recreation The multi-use Stansbury Front and Medina Flat Trails begin nearby, offering access to the rugged Deseret Peak Wilderness. Willow Creek offers rainbow and brown trout fishing. Facilities This campground has 3 single sites. This campground has vault restroom facilities. There is no water system in this campground, yo...

Reservable Yes
Reserve on Recreation.gov →
Temperature
72°F
Warm Hot Boiling
Water Temp 72°F (22°C)
Avg Air Temp 54°F
Above Ambient +18°F
Mild soaking conditions September
Access
Open
Road Access Roadside
Distance to Road 238 ft
Land
Ownership State
Agency SLB
Designation SRMA
Unit State Trust Lands I-80 Block
Manager SLB
Protection 3 - Protected, subject to extractive use

Hike 2 waterfalls near Big Warm Springs

Looking for more outdoor adventures? Explore waterfall hikes near Big Warm Springs, Utah.

Frequently Asked Questions
What is the water temperature at Big Warm Springs?
Big Warm Springs has a water temperature of 72°F (22°C). This is a warm thermal spring.
Where is Big Warm Springs located?
Big Warm Springs is located in Tooele County, Utah at 4,220 feet elevation, near Grantsville. Coordinates: 40.7430°N, 112.6420°W.
How do I get to Big Warm Springs?
Big Warm Springs has Roadside road access (238 ft from the road).
Is Big Warm Springs free to visit?
Big Warm Springs has Open access. It is managed by SLB.
Can I camp near Big Warm Springs?
Yes, Lower Narrows Campground is located nearby (17.5 miles away).
What minerals are in the water at Big Warm Springs?
Water chemistry analysis shows the presence of pH, Total Dissolved Solids, Calcium, Magnesium, Sodium, Sulfate, Chloride. The pH is 7.7 (slightly alkaline). Total dissolved solids measure 8,110 mg/L.
Sources: USGS NWIS, Wikipedia