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Water supply in Miyakojima : ウィキペディア英語版 | Water supply in Miyakojima The water supply in Miyakojima involves the history and development of the current water supply in Miyakojima, a small coral island with only one river, which is administered by Okinawa Prefecture, in Japan. ==Overview== The water supply in Miyakojima depends mainly on spring water or ground water, since there are almost no rivers. Although the yearly rainfall amounts to , 40% of it evaporates, 10% flows into the ground and 50% penetrates deep into the ground.〔Hirara City History()Nakanishi()〕 Thus, there is almost no source of surface water.
抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)』 ■ウィキペディアで「Water supply in Miyakojima」の詳細全文を読む
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