The Matanoagawa Dam is a concrete gravity dam on a tributary of the Hino River located 2.3 km (1 mi) south of Kōfu in Tottori Prefecture, Japan. Construction on the dam began in 1978 and it was complete in 1984. The primary purpose of the dam is hydroelectric generation and it creates the lower reservoir for the Matanoagawa Pumped Storage Power Station. It is 69.3 m (227 ft) tall and creates a reservoir with a 7,940,000 m3 (6,437 acre·ft) storage capacity. The power station is located on the southern bank of the reservoir and contains six 300 MW Francis pump-turbine-generators. The upper reservoir for the pumped-storage scheme is created by the Doyo Dam located 6 km (4 mi) to the southeast in Okayama Prefecture.