The Dujiangyan Irrigation System is an ancient irrigation project located in Sichuan Province, China. Built around 256 BC during the Warring States period, it was designed to manage the waters of the Min River and prevent flooding while providing irrigation to the surrounding agricultural land. This innovative system uses a combination of channels, levees, and weirs to distribute water efficiently. It is notable for its sustainable design, which allows for the natural flow of the river to be harnessed without the need for dams. The Dujiangyan Irrigation System is recognized as a UNESCO World Heritage Site for its historical significance and engineering ingenuity.