Hot Springs near Lower Ranch (NW¼ Sec. 16, T25N, R39E, Cain Mountain 7.5-minute Quadrangle) have a reported temperature of 40.0ºC (Reed and others, 1983, p. 44). Estimated reservoir temperatures for the silica and Na-K-Ca geothermometers, respectively, are 94ºC and 100ºC (Mariner and others, 1974). An unnamed spring in Sec. 19, T25N, R39E, about 6 km to the southwest has a reported temperature of 28ºC (Cohen and Everett, 1963). That spring is near the end of a long line of springs along a northwest-trending fault system that cuts the alluvium and intersects the McCoy Springs area about 7.2 km to the northwest (Cohen and Everett, 1963; Stewart and Carlson, 1976b).