Geographical environment of Qinbei District

Qinbei District is located in the south of the Tropic of Cancer, the south of Guangxi Zhuang Autonomous Region, the south of Guangxi Zhuang Autonomous Region, backed by the southwest of China, facing Southeast Asia and bordering the Beibu Gulf. It is a key place to go to sea in the southwest, with superior geographical position and convenient transportation. It is adjacent to Lingshan in the east, Qinnan District of Qinzhou City in the south, Shangsi County of Fangchenggang City in the west and Liangqing District of Nanning City in the north, with a total area of 2 179 square kilometers, bordering Fangchenggang, the capital of Nanning, and Vietnam. river

Qinbei District is rich in water resources and numerous rivers, the largest of which is Maoling River. Maoling River, called Yuhongjiang in ancient times, also known as Xijiang River, is the largest river in Qinzhou City. Originated in Longmen Village, bancheng town Tunche Village Office, it flows through Na Xiang, Xintang, Long Beach, Xiaodong, Mona, Dasi, Huangwutun and other towns, and flows into Maoweihai in Beibu Gulf at Tuanhe in Kangxiling Town and Maoling in Fangchenggang City. The total length of the main stream is112km, and the drainage area is 2959 km2. The gradient of the main stream is 0.69‰, the total drop is135m, and the average elevation of the basin is109m.

Maolingjiang

The main rivers are all in Qinzhou city, with a drainage area of 1974 square kilometers. There are 100,000 mountains in the west of the basin. There are four first-class tributaries with rainfall collection area exceeding 100 square kilometers, such as Bancheng River, Mona River, Dasi River and Dazhi River, two second-class tributaries, such as Guitai River and Tanying River, and two third-class tributaries, such as Nawan River and Pingwangshui (Fangcheng County). The whole river is fanned.

Dasijiang

Located in Dasi Town, Qinzhou City, Guangxi, it is a first-class tributary of Maoling River, the largest river in Qinzhou. Dasi River originates from Bai Ji Village, Gongzheng Township, Shangsi County, Fangchenggang City, flows through Shangsi Gong Zheng, Guitai Town, Dasi Town and other towns, and joins the mainstream of Maoling River at the old tip of Dasi Town. It has a total length of 69.3 kilometers and a drainage area of 599.2 square kilometers, of which the length of rivers in Qinzhou is 46.7 kilometers and the drainage area is 455.8 square kilometers.

underground water

The distribution of groundwater in Qinbei district is uneven, and the more it goes to the north, the less it is, but there are differences in different places: Xintang area in the north is red clastic rock pore fissure water, and its water abundance is very weak; Bancheng passes from Xiaodong to Mona, and the lithofacies contact zone and fault fracture zone have weak water content and little groundwater.