China's earliest known water-harnessing facilities found in Hubei

The existing dam measures 2 meters in height and 180 meters in length. It has a reservoir to the east and an 8.5-hectare irrigation area to the west, with the latter found to have hosted a prehistoric paddy, according to Tao.

A spillway lies at the northern side of the reservoir, which allowed for discharge of excess water during flood seasons.

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