Occurrence of Attributes in Original Text

The text related to the cultural heritage 'Mount Qingcheng and the Dujiangyan Irrigation System' has mentioned 'Weir' in the following places:
Occurrence Sentence Text Source
Today the system comprises two parts: the Weir Works, located at an altitude of 726m, the highest point of the Chengdu plain 1km from Dujiangyan City, and the irrigated area.
Three key components of the Weir Works control the water from the upper valley of the Minjiang River: the Yuzui Bypass Dike, the Feishayan Floodgate, and the Baopingkou Diversion Passage.