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Hatanagi-II Dam
The is a dam on the Ōi River in Aoi-ku, Shizuoka, Shizuoka Prefecture on the island of Honshū, Japan. A hollow-core concrete gravity dam, it has a hydroelectric power generating station owned by the Chubu Electric Power Company.
== History ==
The potential of the Ōi River valley for hydroelectric power development was realized by the Meiji government at the start of the 20th century. The Ōi River was characterized by a high volume of flow and a fast current. Its mountainous upper reaches and tributaries were areas of steep valleys and abundant rainfall, and were sparsely populated. Design work began in 1902 by the and the first dam on the Ōi River (the Tashiro Dam) was completed in 1927. Further work was suspended by the Great Depression of the 1930s, and World War II in the 1940s. However, by the early 1950s, Japan’s need for electrical energy was growing exponentially. The Ōigawa Railway Ikawa Line was expanded to facilitate dam construction, and the newly created Chubu Electric Power Company received a loan from the United Nations Bank for Reconstruction and Development on September 10, 1958 to fund the project. Construction was completed by December 1961, and the system came into operation in early 1962.
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