Several hot springs in S½ Sec. 23, T14N, R19E are found over a 0.65 km2 area. These springs are named Hobo Hot Springs on the Genoa 7.5-minute Quadrangle, but the Reno 1:250,000 topographic map shows Hobo Hot Springs to be about 2.5 km to the northeast, at another group of warm (24-32ºC) springs located in NW¼ NW¼ Sec. 20, T14N, R20E (Center for Water Resources Research, 1973). Glancy and Katzer (1975) reported Hobo Hot Springs in SE¼ SE¼ Sec. 23, T14N, R19E; temperatures of 30 to 50°C have been recorded (Trexler and others, 1980). Mariner and others estimated the reservoir temperature to be 69ºC and 70ºC using silica and Na-K-Ca geothermometers, respectively (1983, p. 105). The springs are located at a point where the single mountain-front fault (the Genoa fault) splays northward into several faults. About 5 km northwest of Hobo Hot Springs (in parts of Sec. 3, 4, 9 and 10, T14N, R19E) an approximately 2 km2 area of thin spring travertine has been reported (Pease, 1980). Tropical aquarium fish (Birk, 1987) and Malaysian prawns were raised in the spring waters in the 1980s, but the site has been inactive since then.