Daiyuhe mainstream trend

Dai Yu, the source of the Han River, originated in Zhongshan, Jianzhuling and Shuichiya in the northwest of ningqiang county.

Within the territory of ningqiang county, it flows through Huaishuba, Shuanghekou and Lijiaba from the source in the north-south direction, meets the backwater river in the west of Hanyuan Town, ningqiang county, turns to the southwest-northeast direction, flows north through Hewan, Gaozhaizi Town, Lijiasi, Liujiaba and Houheba, passes through Tiesuoguan Town, Guanxia, Guanmen Temple, Maobazi, Yangjiaba and Hujiaba Town, and enters the county. The main stream is 87.5 kilometers long (Mianxian county said it was 99.2 kilometers long), with a drainage area of 1022.8 square kilometers.

Dai Yu in Mianxian County originated in Jianzhuling, ningqiang county, and is called Dai Yu in ningqiang county. Seven Sisters flows into the county from Xinpu Town (formerly Xiongjiaping Township), which is called Nanhe. After Xinpu Town, it flows into Daan River in Tongqianba Village (formerly Tongqianba Township) and into Han River in Gea Temple, with a total length of 22.76 kilometers. The maximum flow rate is 3 100 m3/s, and the minimum flow rate is 2.2 m3/s. There are small weirs on both banks, which irrigate about 2000 mu of farmland. 1985, the hydropower project from Jia to Han was completed. At this time, the hydration of Liuxi River, the largest tributary of Jialing River, flowed into Dai Yu, and the water volume quadrupled.