1. Location: Qingzhang River originates from Xizhai Liulin near Cao Zhang Village, Xiyang County, Shanxi Province, and Zhang Zhuo originates from the north of Lianghekou Village, Yushe County, Shanxi Province, also known as Yushe River.
2. Source: The source of Qingzhang River is Xizhai Liulin, and the source of Zhangzhuo River is Sanxian.
3. Watershed characteristics: Most of the Qingzhang River Basin belongs to stony areas, with good surface vegetation, sandy riverbed and clear water color, so it is called Qingzhang River. The Zhang Zhuo River Basin is named Zhangzhuohe because of its deep loess cover, sparse vegetation, many tributaries and seasonal rivers, fast-flowing water and much sediment carried by floods.