Hot Sulphur Lake
Hot Sulphur Lake sits right off the road near Gooding at 81 degrees Fahrenheit, making it one of the more accessible and mildly warm thermal features on the Snake River Plain. At 3,326 feet elevation, the spring barely qualifies as thermal, running just 27.6 degrees above the average annual air temperature.
The setting is flat agricultural country in Gooding County, where irrigated fields and pastureland stretch across the plain under wide-open sky. Precipitation is sparse at 12.2 inches annually, with light winter snowfall averaging 25 inches. The spring forms a shallow, lake-like feature visible from the road, its surface calm and unassuming. There is no dramatic steam or strong mineral smell, just warm water pooling quietly in the high desert landscape.
The modest temperature suggests either a shallow heat source or significant mixing with cooler groundwater before reaching the surface. Located on the Snake River Plain, the spring draws from the extensive basalt aquifer system that underlies this volcanic province. Without published chemistry data, the sulfur in its name likely reflects historical observations of hydrogen sulfide odor or sulfate content typical of regional geothermal waters.
This roadside spring requires almost no effort to reach, sitting just about 100 feet from the nearest road. The 81-degree water temperature is cool enough for wading but too tepid for a proper hot soak. The open, exposed location offers no shade, so bring sun protection. Nearest services are in Gooding.
Is Hot Sulphur Lake worth visiting?
Best for
- Warm-water soaking
- Easy day trips