Sandian Weir

　　Sandian Weir is situated downstream of Zhibadou in Group 1, Yuanjiaying Village, Shaheying Town, Chenggu County. It borders Dujiaying in Bowang Town to the east. Its exact construction date remains to be verified. Currently, the weir flows from north to south, with its embankment distributed in a trapezoidal shape. It is 11.8 meters long, 7.8 meters wide, and 4.9 meters high, featuring six small weirs constructed from stone slabs. The top of the weir is equipped with two sluice gates, while the slopes on both sides are solidly built. The base consists of multiple layers of flat-laid stone strips, and the western side uses a stone roller as a foundation. To this day, Sandian Weir continues to play an important role in irrigating farmland for local villagers. In 2011, it was designated as a cultural heritage site under the protection of Chenggu County People’s Government.