Mercey Hot Springs

## Overview Mercey Hot Springs is a remote geothermal spring destination located in the rugged hills of western Fresno County, California, near the eastern edge of the Diablo Range. Situated at approximately 36.7054° N, 120.8640° W, this natural hot spring area has a long history as a place of relaxation and healing, with roots stretching back well over a century. Historically, Mercey Hot Springs operated as a small resort and retreat, drawing visitors seeking the reputed therapeutic benefits of its naturally heated mineral waters. The springs are believed to derive their heat from deep geothermal activity associated with the tectonically active geology of the California Coast Ranges. The name "Mercey" is tied to early settlers and landowners in the region, and the site has served as a rustic getaway for generations. The surrounding landscape is characterized by dry, rolling grasslands and sparse oak woodlands typical of California's inner Coast Range — a stark and beautiful setting that feels far removed from civilization. The area is sparsely populated, lending the springs a quiet, secluded atmosphere. ## Directions 1. From Interstate 5, take the exit for Highway 152 West (Pacheco Pass) toward Los Banos. 2. Travel west on Highway 152 and look for signs or a turnoff leading south toward Mercey Hot Springs Road (also sometimes referenced as Little Panoche Road or nearby county roads). 3. Follow the rural roads south and west into the hills. The terrain becomes increasingly remote, and cell service may be limited. 4. The springs are located in a valley among the low hills at the GPS coordinates: **36.7054, -120.8640**. *Note: Road conditions in this area can vary seasonally. A vehicle with good clearance is recommended, especially during or after wet weather. Confirm current access conditions before visiting, as the property has changed hands and access policies over the years.* ## What to Expect Visitors to Mercey Hot Springs can expect a remote, off-the-beaten-path experience. The geothermal waters here have historically been channeled into soaking tubs or small pools, with water temperatures that have been reported to be comfortably warm to hot, consistent with natural geothermal heating. The mineral content of the water has traditionally been considered a draw for those interested in natural mineral soaking, though specific water quality data is not widely published. The setting is arid and open, with sweeping views of the surrounding hills. Facilities at the site have varied over the years depending on ownership and management — at times the springs have operated as a small commercial retreat with basic accommodations (such as cabins or camping), and at other times access has been more restricted. It is strongly recommended to check current access status and any reservation requirements before making the trip. Because of its remote location, visitors should come prepared with sufficient water, food, and fuel. Cell phone reception is unreliable in the area. The drive itself is scenic, passing through quintessential California rangeland, and the solitude of the location is part of its appeal. The springs have historically been reported as a source of clean, mineral-rich water used for bathing, though visitors should not assume the water is safe for drinking without independent verification.