Danjiangkou Reservoir, which is located on Hanjiang River and a major tributary of the Yangtze River, serves as the source of the central route of the South-to-North Water Diversion Project. Every small drop of water here carries a huge responsibility to supply the Chinese capital city Beijing.
The central route of the South-to-North Water Diversion Project transfers water from the Danjiangkou Reservoir located in the upper and middle reach of the Hanjiang River, the largest tributary of the Yangtze River, to the Tuancheng Lake in Beijing's Summer Palace, running across the Yellow River through a tunnel.
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