San Ysidro Hot Springs
The striking thing about San Ysidro Hot Springs is the water chemistry. It is a tepid spring in Sandoval County, about eight miles from Jemez Pueblo. The dissolved-solids figure is very high, with iron among the listed minerals, so this is closer to brine than to bathwater. Owner unknown, access unknown; that is all the record gives. There is a photo on record.
From a road the record calls North Access, figure a third of a mile on foot. Elevation is moderate. Rain is scarce here and winter snow is light; the average temperature is mild. Vista Linda Campground, around fourteen miles away, is the camp the record names. The managing agency is blank.
Winter is the listed season, and snow is light enough that the roads stay open. The water is mineral-heavy and the sample is from 1974, so take every figure as an old reading. The temperature sits on the cool side of warm. Ownership is unconfirmed, so check before walking in. Camp at Vista Linda if you need a base.
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 San Ysidro Hot Springs.
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
- Hillside
- The spring sits on a steep slope that climbs to the east.
- Highest ground nearby
- 211 ft above the spring
- Within a quarter mile, to the east
A slice through the ground from west to east, 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 37% 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 San Ysidro Hot Springs contains 9490 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).
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Overview Vista Linda Campground is a first come, first serve campground in the San Diego Canyon on the Jemez National Recreation Area. There are thirteen sites throughout the campground. Potable water and vault toilets are provided amenities. Each campsite has picnic tables, a fire ring, and a charcoal pedestal. Sites with shad features are available; not all sites provide shade features. Recreation Vista Linda Campground is one of five developed campgrounds in the Jemez National Recreation...
San Ysidro Hot Springs sits at 5,612 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 22% stronger than at sea level, so bring sunscreen and drink more water than you normally would.
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San Ysidro Hot Springs is road-accessible, so you can bring more gear.
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