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烏山頭ダム – 日本統治時代ーメガプロジェクトの歴史

烏山頭ダム

 

烏山頭ダム(うさんとう-)は台湾台南市官田区に位置するダム。旧称は烏山頭貯水池。建設を監督した八田與一に因んで八田ダムの名でも知られる。海抜468mの烏山嶺に位置し、水力発電設備を有す。上空からは緑色の珊瑚のように見えるため、ダム湖は珊瑚湖と称されている。

フーバー・ダムが完成するまでは世界最大のダムであった。

概要

烏山頭ダムは1920年に着工し1930年に完成した、嘉南大の重要な水利工事の一つであり、台湾初期のダムの一つである。計画は日本人技術者の八田與一により策定され、嘉南平原の農業灌漑を主目的として建設された。ダムは曽文渓支流の官田渓上流に位置し、台南県官田郷六甲郷大内郷東山郷にまたがる低地を利用し、大埔渓を集水している。下流に曽文ダムが完成してからは相互補完して運用されている。