Agua Caliente
Agua Caliente in Roy Drachman Park flows at 86 degrees Fahrenheit with confirmed USGS measurements at 30 Celsius (86°F), containing 176 mg/L sulfate and other dissolved minerals. This county-managed thermal spring near Tanque Verde sits at 2,750 feet elevation in southern Arizona's Sonoran Desert.
The spring emerges just 76 meters from the nearest road in a protected regional park setting. Visitors encounter desert vegetation adapted to minimal rainfall, with the warm mineral-rich water creating a stark contrast to the arid surroundings. The landscape provides dramatic views of desert mountains and bajadas.
The hot water results from deep circulation through fault zones in the Basin and Range geology underlying southern Arizona. The Sonoran Desert location has supported human use of these springs for centuries, and the regional park designation ensures conservation of this thermal resource.
Park access is open and roadside-convenient, located within a protected county recreation area. The warm water and mineral content make comfortable soaking possible year-round, though winter months offer the most pleasant visiting conditions in the desert.
Is Agua Caliente worth visiting?
Best for
- Warm-water soaking
- Easy day trips
- Overnight camping trips
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