Dehy Hot Spring
On BLM land in Mono County, about eleven miles from Mammoth Lakes, Dehy Hot Spring comes out of the ground far too hot to sit in, up in the range where you would burn yourself, and the measured flow is a trickle. Access is open. This is Bishop Field Office public land, high desert at nearly seven thousand feet.
High country on the east flank of the Sierra. Pit Road is the nearest road, and the spring lies a little over half a mile from it. Winters are heavy, six feet of snow in an average year, so winter access means snow. Rain is scant. Crowley Lake Campground is the listed camping, and the BLM Field Office in Bishop manages the ground.
the record lists December through February as best months, which is odd for a place with six feet of snow, so weigh that against the snowfall figure. Open access on BLM land. It is hot enough to burn skin; keep fingers out until you have measured it. Flow is tiny. The temperature and pH date to a 1973 survey.
The water at Dehy Hot Spring is slightly alkaline (pH 7.7). It is notably rich in sodium (supports circulation and skin hydration) and chloride (natural antiseptic with skin health benefits).
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Overview Crowley Lake Campground offers 47 RV/tent sites, maximum recommended RV length is 30 feet. All sites include a fire pit, picnic table and a lantern holder. No hook-up. Potable water is available. Dump station fee is $10.00, no passes accepted. Closest amenities are 2 miles south in Crowley, or 10 miles north in Mammoth Lakes. Recreation Popular activities include lake and stream fishing, boating, windsurfing, horseback riding, hiking, and wildlife viewing. Facilities Crowley Lake...
Dehy Hot Spring sits at 6,889 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 28% stronger than at sea level, so bring sunscreen and drink more water than you normally would.
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Dehy Hot Spring is road-accessible, so you can bring more gear. The water runs hot, so extra hydration is key.
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