deposition by the two rivers. Major tributaries (八溝川) Yamizo River originates from the southern slope of Mt. Yamizo in Daigo, Ibaraki. It is 20.8 kilometers long. The natural springs of Yamizo River (八溝川湧水群 Yamizogawa Yūsuigun) are located at the source of the river. It is one of the , which were designated by Ministry of the Environment in 1985. Oshi River (押川) It is 27.4 kilometers in length and flows into Kuji River. Taki River (滝川) Taki River rises at Namase Basin (生瀬盆地) and flows to the west. It is 12 kilometers in length. Namase Falls and Fukuroda Falls are located alongside the river. Fukuroda Falls are one of the three great waterfalls of Japan (日本三名瀑 Nihon-san-meibaku), the other two being Kegon Falls and Nachi Falls. Namase Falls and Fukuroda falls are designated as Places of Scenic Beauty. Tama River (玉川) It is 20.0 kilometers in length and flows into Kuji River. Asa River (浅川) It is 23.9 kilometers in length and flows into Kuji River. Yamada River (山田川) It originates from Mount Nabeashi (鍋足山), flows through former Suifu, Kanasagō, Hitachiota, and into Kuji River. It is 37.8 kilometers in length. Ryūjin River (竜神川) Its source is in (男体山) located in the southeastern part of Daigo. It is 12.5 kilometers in length and flows into Yamada River at Takakura (高倉) in former Suifu Village. , a valley that was formed by the erosion, is situated alongside the river. On the lower valley Ryujin Dam is located and has the total capacity of and the height of . Ryujin Big Suspension Bridge (竜神大吊橋 Ryujin Otsuribashi) links both sides of the valley, and is the longest suspension bridge for pedestrians in Honshu at 375 meters. Sato River (里川) It is 51.4 kilometers in length and flows into Kuji River. Municipalities in the basin In the basin there are five cities, five towns and two villages, which are listed below. the population of the basin is approximately 200,000. Hitachi, Hitachiota, Naka, Hitachiomiya, Daigo, Tokai (in Ibaraki Pref.) Asakawa, Tanagura, Hanawa, Yamatsuri, Samegawa (in Fukushima Pref.) Otawara (in Tochigi Pref.) Notes References Further reading (in Japanese) External links Hitachi River and National Highway Office (in Japanese) Rivers Division of Ibaraki Prefectural Government (in Japanese) Kujigawa Fishery Cooperative (in Japanese) Rivers of Fukushima Prefecture Rivers of Ibaraki Prefecture Rivers of Japan