Dujiang Dam. Dujiangyan Is Located In The West Of Dujiangyan City, Chengdu, Sichuan, China. It Is Located On The Minjiang River In The Western Part Of The Chengdu Plain. It Was Built In The Last Year Of The Qin Zhao Wang & X28;About 256 Bc To 251 Bc& X29;. It Is A Large Water Conservancy Project Built On The Basis Of The Predecessors Of Li Bing, Shu County, On The Foundation Of Bie Ling, Which Is Composed Of Water Dividing Fish Mouth, Flying Sand Weir, And The Mouth Of The Treasure Bottle. Part Of It, Which Has Been Playing The Role Of Flood Control And Irrigation For More Than Two Thousand Years, Is The Largest Water Conservancy Project In The World, Which Has Been The Longest, Only Retained, Still Used And Characterized By No Dam Diversion In The World So Far.

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251 256 basis bie bing bottle built characterized chengdu china city composed conservancy control county dam diversion dividing dujiang dujiangyan far fish flood flying foundation irrigation large largest last ling located longest minjiang mouth part plain playing predecessors project qin retained river role sand shu sichuan still thousand treasure two used wang water weir west western world year years zhao