General situation of Youjiang main stream

Youjiang, the name of the upper reaches of Yujiang River, a tributary of Qianjiang section of Xijiang River in Pearl River system. Specifically, it refers to the reach of Yujiang River from Bicheng Estuary in Baise City, Guangxi Zhuang Autonomous Region to the junction of Song Cun and Zuojiang River in the western suburbs of Nanning.

Yujiang River system originates from Tingnong Village, Haodi Township, Guangnan County, Yunnan Province, and flows into the confluence of Baise Town and Bicheng River in Baise City, Guangxi Province, which is called Youjiang River. Youjiang River flows through Tian Yang, Tiandong, Pingguo, Long 'an and other counties. It is called Yujiang River only when Song Cun meets Zuojiang River in Nanning. The upstream is the Pi 'ai River and the downstream is the Yujiang River. In history, Youjiang River and Zuojiang River are called the two sources of Yujiang River. According to Baise Tangzhi, Youjiang River flows from Xia Jing County, Baise Tianzhou, to Longhua Temple in Nanning, which is the right of Zuojiang River, so it is called Youjiang. Modern hydrology thinks that Youjiang River is the main source and mainstream of Yujiang River, and Zuojiang River is a tributary of Yujiang River. From the azimuth, Zuojiang River is in the west and Youjiang River is in the east. Youjiang section, 707 kilometers long. The drainage area is 386 12 square kilometers, and the annual average runoff17.2 billion cubic meters.

Within the territory of Baise City, it enters from the entrance of Luocun Village, passes through Yang Xu, Nabi Township, Baise Town and Sitang Township, and exits at the gate of Fulian Village in Sitang Township to Tianyang County. The drainage area of Baise City is 37 13 square kilometers, accounting for 9.62% of the total drainage area. The length of city boundary flow is 1 18km (the length of Egang River from Bicheng estuary to Luocun estuary is 72km).

In Tianyang County, it enters Tianyang County from Sitang Township, Baise City, passes through Baifeng, Toutang, Napo, Tianzhou, White, Naman and other towns, and flows into Tiandong County in Tangzhi Village, Naman Town. The length of rivers in China is 75. 1 km, and the drainage area is 2237.65 square kilometers.

In Tiandong County, it passes through Xinzhou, Zhong Ping, Baidu, Baiyin and other villages in Xiangzhou Township; Ma Ping Town Shengtai, Siping, Cooper, Jingyi and heheng village; Li Qiao, Heying, Fulan, Tanhe, Hetong, Lintuo, Baoqun and other villages in LAM Raymond Township; Liangyu, Bai Bi, Lin Si, Tan Le and Donglong in Lin Si Town flow into Pingguo County. The national main stream is 244 kilometers long, and the rainwater collection area is 8 12. 1 square kilometer.

In Pingguo County, Si 'an Village, Guohua Town, bordering Tiandong County in the west, enters the country, flows through Tongxie Village, Bofu Village, Xinhua Village, Booth Village and Matou Tuowan Village, and flows out of Jiangyan River in Longan County in the east. The county seat is 46 kilometers long. The river channel is about 200m wide, which is narrower than120m. The annual runoff is 6.0778 billion cubic meters, which is navigable in all seasons.

In Longan County, Youjiang was called Panjiang in Ming Dynasty and Xiyangjiang in the county annals of the Republic of China. From the north of Jiangyan Town and Nalutun Village in the northwest of the county town, it enters the countryside, flows through 22 administrative villages in 7 towns of Jiang Yan, Chengxiang, Nanxu, Qiao Jian, Xiaolin, Natong and Dingdang in the southeast direction, and accepts 17 tributaries such as Tuotuo River, Longxiang River, Wanglinjiang River and Dingdang River, and then bends into 9 bends 13 after entering Natong Town. The territory is 88 kilometers long.

In Nanning, it begins at the confluence with Wuming River and ends at the confluence of Song Cun and Zuojiang River. The river in Nanning is 39.4 kilometers long.