Casa Diablo Hot Springs And Geyser
Casa Diablo Hot Springs and Geyser is an active geothermal area in the Inyo National Forest, Mono County, a little over four miles from Mammoth Lakes. The water sits at boiling point. Public access is open on Forest Service ground. Casa Diablo Cutoff passes within six hundred feet or so, which the record classes as a short walk.
A little under seventy-four hundred feet, with eight feet or more of snow most winters and modest precipitation otherwise. From the cutoff it is a short walk. National Forest, no further designation. Sherwin Creek campground is under two miles off, and Mammoth Lakes is only a few miles further. The snow total is the number that matters for timing.
December through February show up as the listed months, which means snow. The water will scald anyone who touches it. Sherwin Creek is the closest camping, about two miles. A 1984 USGS sample put it near neutral with high dissolved solids and iron present. No fee recorded.
Wikipedia describes Casa Diablo Hot Springs as a hot springs and active geothermal site near Mammoth Lakes in the Eastern Sierra.
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 Casa Diablo Hot Springs And Geyser.
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
- Gentle slope
- The ground tilts gently up to the northeast.
- Highest ground nearby
- 81 ft above the spring
- Within a quarter mile, to the northeast
A slice through the ground from south to north, about 0.6 miles end to end.
Elevation data: USGS 3D Elevation Program. Aerial imagery: USGS The National Map. Public domain.
Landsat's thermal camera passed over on a clear winter day, January 5, 2022. This spring's heat shows up from about 440 miles up. The brightest yellow marks the warmest ground, roughly 13°F warmer than the land around it.
Drag to compare. The view is about 2½ miles across, and each thermal pixel covers roughly 300 feet of ground, so individual pools blur into one warm patch.
Thermal: Landsat 8/9 surface temperature, USGS (public domain), via Microsoft Planetary Computer. Aerial: USGS The National Map. More springs seen from space.
That's about twice the US average of 65. It's higher than at 86% 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 Casa Diablo Hot Springs And Geyser is neutral (pH 6.8) with 967 mg/L total dissolved solids. It is notably rich in chloride (natural antiseptic with skin health benefits).
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Overview Sherwin Creek Campground is located in the eastern Sierra Nevada Mountains within 2 miles of the full-service community of Mammoth Lakes, California. Popular among anglers, hikers, off-road vehicle enthusiasts and photographers, the campground is near some of the most spectacular wilderness and outdoor recreation areas in the Sierras.Recreation With a motocross track and trails, Sherwin Creek is a hot spot for off-road vehicle enthusiasts. The area's majestic scenery and challenging...
Casa Diablo Hot Springs And Geyser sits at 7,418 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 30% stronger than at sea level, so bring sunscreen and drink more water than you normally would.
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Casa Diablo Hot Springs And Geyser is road-accessible, so you can bring more gear. The water is dangerously hot, so bring water shoes and test pools carefully. Cold air temperatures make a changing robe or warm layers essential.
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