Kagawa Irrigation Canal

Japanese: 香川用水 - かがわようすい

This irrigation canal directs water from Sameura Dam upstream of the Yoshino River to Kagawa Prefecture via Ikeda Dam. Kagawa Prefecture has little precipitation, and even if there is rain, it is washed away in a short time due to the topography, and water dries up completely during droughts. For this reason, since ancient times, about 20,000 irrigation ponds, including Mannoike, have been built in the prefecture to make the most of rainfall. However, to meet the rapidly increasing water demand, it was a long-cherished wish to divert water from the Yoshino River. The Kagawa Irrigation Canal fulfilled this wish, and was completed in 1974 by the Water Resources Development Public Corporation (→Water Resources Agency). The canal is 106 km long (47 km of which is managed by the Water Resources Agency and 59 km by the national government) and is used for agricultural water (benefit area of about 31,000 ha) and urban water in the prefecture.

Source: Encyclopaedia Britannica Concise Encyclopedia About Encyclopaedia Britannica Concise Encyclopedia Information

Japanese:

吉野川上流にある早明浦 (さめうら) ダムの水を池田ダムを経て香川県に導く用水路。香川県は降水量が少なく，また降雨があっても地形などから短期間に流亡して，干天時には水が完全に枯渇する状況にあったため，古来，県内には満濃池をはじめ約2万のため池が築造され，降雨は最大限に利用されていた。しかし急増する水需要に対処するには，吉野川からの分水が悲願であった。その悲願をかなえたのが香川用水で，1974年水資源開発公団 (→水資源機構 ) により完成。水路は全長 106km (うち 47kmを水資源機構，59kmを国が管理) で，県内の農業用水 (受益面積約3万 1000ha) ，都市用水に利用されている。

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