Kelly Warm Spring
Kelly Warm Spring is a tepid spring in Grand Teton National Park, Teton County, about fourteen miles from Jackson. The water comes out in the low eighties on the latest reading. It sits a few hundred feet from the Gros Ventre Road, with a campground close by. Park Service land, access open. Nothing about it will burn you.
The Gros Ventre Road passes within a few hundred feet of the spring, so reaching it takes no hiking. Elevation is around sixty-seven hundred feet. This spot gets more than eleven feet of snow most years, and the year averages near forty. Moderate precipitation. The land is Grand Teton National Park, managed by the Park Service.
The record's pick is December through February, and with the road that close the question in winter is plowing, which the park can answer. Gros Ventre Campground is three miles off, per the record. The water is tepid, no burn risk. A 2017 water sample is on the record, near-neutral with modest dissolved solids. The record shows no fee.
OpenStreetMap records the name in the plural, Kelly Warm Springs. The USGS keeps a site record here and sampled the water in March 2017. That sample showed a near-neutral pH and total dissolved solids under 300 milligrams per liter. The minerals listed are calcium, magnesium, sodium, sulfate, chloride and iron.
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 Kelly Warm Spring.
Drag the handle to compare the two views. The orange dot marks the spring, in a frame about three quarters of a mile wide.
- Setting
- Valley floor
- Gentle slopes rise on both sides.
- Highest ground nearby
- 130 ft above the spring
- Within a quarter mile, to the southeast
A slice through the ground from northwest to southeast, about 0.6 miles end to end.
Elevation data: USGS 3D Elevation Program. Aerial imagery: USGS The National Map. Public domain.
That's about 1½ times the US average of 65. It's higher than at 29% 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.
See every spring on the geothermal heat map →
Heat flow estimate: Stanford Thermal Earth Model (Aljubran & Horne, 2024), CC BY 4.0.
The water at Kelly Warm Spring is slightly alkaline (pH 7.6) with 291 mg/L total dissolved solids.
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Overview Gros Ventre (pronounced ‘grow-vont’), means “big belly” in French, and the Gros Ventre Campground—surrounded by cottonwood trees and featuring stunning views of Blacktail Butte and the Teton Mountains—is truly magnificent! The campground’s location next to the Gros Ventre River offers some of the best opportunities in the park for wildlife sightings, as bison, moose, mule deer and a wide variety of birds are known to frequent the area. For avid anglers, the Gros Ventre River offers p...
Kelly Warm Spring sits at 6,684 feet above sea level, way above the mile-high mark. You may not feel the altitude strongly, but hot water still dehydrates you faster at elevation. UV is about 27% stronger than at sea level, so bring sunscreen and drink more water than you normally would.
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Kelly Warm Spring is road-accessible, so you can bring more gear. Cold air temperatures make a changing robe or warm layers essential.
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Springs Near Kelly Warm Spring
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Slightly Alkaline Springs (pH ~7.6)
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