Wujiang River is the largest river in Guizhou Province.

Wujiang River is the largest river in Guizhou Province and a tributary of the right bank of the upper reaches of the Yangtze River, which was called Qianjiang River in ancient times. Originated in Huayu Cave, Xianglushan, Weining County, Guizhou Province, it flows through Youyang, northern Guizhou and Pengshui in southeastern Chongqing and joins the Yangtze River in Fuling, Chongqing.

The main stream of Wujiang River has a total length of1.037km, with a drainage area of 87,900km2. Liuchong River is upstream above confluence, middle reaches after confluence to Sinan, and downstream below Sinan. The larger tributaries are Liuchong River, maotiaohe River, Qingshui River, Xiangjiang River, Hongdu River, Furong River and Tangyan River, with a natural drop of 2123.5m and an average annual flow of1650m3 per second. The average annual runoff of the basin is 600 mm deep, but it is unevenly distributed during the year, and the flood season from May to September accounts for 80% of the annual runoff. Wujiang river system is feather-shaped, with high terrain in the southwest and low terrain in the northeast. Due to the great difference in topography and strong cutting, the vertical change of natural landscape is obvious. It is famous for its fast-flowing water, narrow beaches and narrow valleys, and is known as a "natural barrier". Wujiang River is a tributary of the upper reaches of the Yangtze River and the right bank of the upper reaches of the Yangtze River. Also known as Qianjiang. Originating from Huayu Cave in Xianglushan, Weining County, Guizhou Province, it flows through northern Guizhou and southeastern Chongqing and joins the Yangtze River in Fuling District, Chongqing, with a total length of 1.037 km and a drainage area of 87,920 square kilometers. Liuchong River is upstream above confluence, middle reaches after confluence to Sinan, and downstream below Sinan.

Wujiang river system is pinnate, high in southwest and low in northeast, with karst development in the basin. The terrain is mainly plateau, mountain plain, Zhongshan and low hills. Due to the large height difference and strong cutting, the vertical change of natural landscape is obvious. It is famous for its fast-flowing water, narrow beaches and narrow valleys, and is known as a "natural barrier".

Wujiang River is rich in hydropower resources, with a total hydropower reserve of 1042590 kW. Wujiangdu hydropower station dam is the largest dam in karst area in China. Wujiang river basin is the main industrial and agricultural distribution area in Guizhou, inhabited by Han, Yi, Miao, Buyi and Hui nationalities. Rich in grain, oil, flue-cured tobacco, tea, lacquer, tung tree, Ubuntu, gastrodia elata, Eucommia ulmoides, Codonopsis pilosula and other medicinal materials, and rich in coal, silicon, iron, phosphorus, aluminum, manganese, lead, zinc, antimony and other minerals. Wujiang River has been the main shipping route of Sichuan and Guizhou since ancient times. The super-long span bridge built at 1989 Wujiang River Ferry is the most spectacular bridge in Guizhou Province.

1. The annual runoff of Wujiang River is relatively stable, and the pilot reservoir of Hongjiadu Hydropower Station can be built upstream, which can be adjusted for many years. Wujiangdu Hydropower Station in the middle reaches can be adjusted for many years, and Goupitan Hydropower Station can be adjusted for many years. The output can be increased after cascade transportation. So the power quality is high.

Wujiang can generate electricity in a balanced way all year round;

2. Wujiang River Basin has good topographical and geological conditions, and is a canyon reservoir and power station, with less inundation and resettlement, relatively less engineering quantity, shorter construction period and less investment;

3. The geographical location is moderate, close to the power load center, and it is a good power supply point for "power transmission from west to east". Goupitan Hydropower Station can also play a supporting role in the national power grid, and the construction of Lin Si and Shatuo Hydropower Stations will form a hydropower group that "transmits electricity from west to east" in eastern Guizhou.

4. Wujiang River Basin is rich in mineral resources, with many varieties, high grade and large reserves, among which the retained reserves of aluminum, phosphorus and manganese account for 18%, 19% and10/%respectively, and cheap electric energy can promote the development of mineral resources;

5. Developing Wujiang shipping industry, expanding agricultural irrigation area and building power stations to form reservoirs can also promote the development of tourism;