The Great Dam of Dujiangyan was built in 256 BC to control the flow of water in the River Min, a tributary of the Yangtze. It is still in use to irrigate over 5,300 sq kms of farmland. The image shows part of the huge engineering project, the weir. The original has been replaced by a modern concrete structure.

By Allston Mitchell, April 21, 2014

The Great Dam of Dujiangyan was built in 256 BC to control the flow of water in the River Min, a tributary of the Yangtze. It is still in use to irrigate over 5,300 sq kms of farmland. The image shows part of the huge engineering project, the weir. The original has been replaced by a modern concrete structure.

The Great Dam of Dujiangyan was built in 256 BC to control the flow of water in the River Min, a tributary of the Yangtze. It is still in use to irrigate over 5,300 sq kms of farmland. The image shows part of the huge engineering project, the weir. The original has been replaced by a modern concrete structure.

The Great Dam of Dujiangyan was built in 256 BC to control the flow of water in the River Min, a tributary of the Yangtze. It is still in use to irrigate over 5,300 sq kms of farmland. The image shows part of the huge engineering project, the weir. The original has been replaced by a modern concrete structure.

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