Geographical environment of Changshan county

Rivers in Changshan County belong to Qiantang River Basin and Yangtze River Basin. The territory is dominated by Changshan Port in the upper reaches of Qiantang River, of which the drainage area above the county (the exit of Zhaoxian County) is 3 176.6438+0 square kilometers; There is also Qiuchuan Creek, which belongs to the Poyang Lake system in the Yangtze River basin, with a basin area of 43.35 square kilometers.

Changshan Port: The mainstream Ma Jinxi originates from the northern slope of Qingzhidaijian in Xiuning County, Anhui Province, flows to Huabu Town in Kaihua County and joins Chihuaixi, which is called Changshan Port, and then turns from south to east, and joins Jiangshan Port in Kecheng District, which is called Qujiang. Changshan Port has a total length of 46.6 square kilometers in Changshan County, with a drainage area of 1 0,028.02 square kilometers. Its main tributaries are Fangcun River, Hongqiao River, Nanmenxi River and Longquan River.

Fang Cunxi: It is the largest tributary flowing into Changshan Port. It starts from Changwan River at an altitude of1342.3m in the east, starts from Furong Ridge in the west, meets in furong village, flows through Xinqiao, Fangcun, Dongan, Daqiaotou and Wuli, and flows into Changshan Port in Pukou, Wuli Township, with a total length of 50.45km and a drainage area of 354.8km2..

Hongqiao Creek: Zhujiayuan, originating from Xinchang Township, flows through Xinchang, Song Fang, Tianma, Daqiaotou, Qingshi and other towns, and joins Changshan Port at the reservoir of Qingshi Town, with a total length of 33.3 kilometers and a drainage area of 1 3 1 km2.

Nanmenxi: Originating from Yangjiao West Mountain in Baishi Town, it flows through Baishan Town and Tianma Town and flows into Changshan Port in Putang, Tianma Town, with a total length of 23. 1 km and a drainage area of 179.438+05 km2.

Longquanxi: It originates from Fengmen Mountain in Lidongkeng, Qiuchuan Town, flows through Qiuchuan, Tongluo, Tianma and other towns, and flows into Changshan Port at the upper mouth of Tianma Town, with a total length of 3 1.9km and a drainage area of 125.6 km2.

Other streams that directly flow into Changshan Port Basin include Linghu River, Mache River, Lishan River, Dakeng River and Guantang River.

Qiuchuanxi: It originates from Kengling, Wumaitian Village, Qiuchuan Town, flows through Qiuchuan Town, flows westward into Xinjiang, Jiangxi Province, and finally flows into the Yangtze River, with a total length of16.85km and a drainage area of 43.35km2..