General situation of Qushui main stream

Qushui, named Zhenghe, originated in the northwest of Bai Zi, Liuba County, Shaanxi Province and west of Guanghua Mountain, and flowed southwest into Mianxian County. Along the way, the river network is dense and tortuous, connecting Shaanxi and Gansu provinces in series, accepting rivers such as Liangdang, Huixian, Fengxian, Liuba, Mianxian and Lueyang, and entering the Han River from Jushuikou in the south. The length of the inland river in this county is 33. 1km, the drainage area is 200.2km2, and the average river gradient is 22.7%. The density of river network is 0.88km per square kilometer, and Guchencang Road runs along the river.

In Mianxian County, it was originally called Qushui and Heihe, and it was named after "fledgling" (the introduction of Water Mirror Note). The upstream water comes from liangdang county, Gansu Province and Fengxian and Liuba counties in this province. The sluice stone at the south foot of Baizi Mountain in Liuba County has the longest water flow and should be the source here. At the beginning, Qushui flows southeast, turns west, turns into Yujiawan Village, Chadian Town, Lueyang County, and flows south to Qushui Village, Tuguanpu Township, and enters the Han River. Total length130km, domestic flow of 47.8km, average riverbed width120m.

Qushui is located in Lueyang County, enters Lueyang territory through Shiping in Mian County, flows through Cannongji, Dahuangyuan and Heihe Dam Township in this county, and reaches Mian County, with a total length of 37.5 kilometers. Watershed area 150. 15 km2, gully density 1.36 km2, annual average flow1.31m3, annual runoff of 357 million m3 and hydraulic reserve of 25,700 m3.