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Ikawa Dam
The is a dam on the Ōi River in Aoi-ku, Shizuoka, Shizuoka Prefecture on the island of Honshū, Japan. It was the first hollow core concrete gravity dam to be constructed in Japan, and 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.
In 1906, a joint venture company, the was established, and began studies and design work on plans to exploit the potential of the Ōi River and Fuji River in Shizuoka Prefecture. The British interests were bought out by 1921, and electrical production nationalized under the aegis of the in 1938. The first dams on the Ōi River were completed in the late 1920s and early 1930s, but 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, especially in the industrial belt near Nagoya. After the breakup of Nippon Hassoden at the end of World War II into various regional power utilities, the bulk of the dams on the Ōi River came under the control of Chubu Electric Power.
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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