Danjiangkou River originates from the south side of Fenghuang Mountain in Qinling Mountains in southern Shaanxi Province, flows through Shaanxi Province, Henan Province and Hubei Province, joins the Hanjiang River in danjiangkou city, Hubei Province, and flows into Danjiangkou Reservoir. With a total length of 390 kilometers, the main stream is the longest tributary of the Han River, with a drainage area of 1.73 million square kilometers, accounting for 10% of the total drainage area of the Han River.

In history, Danjiang shipping was developed, and the Ming and Qing Dynasties were the golden age of Danjiang shipping. Danjiang River has the characteristics of small runoff, great interannual variation, serious and frequent floods and high sediment concentration. The water conservancy project in the basin is a famous ancient river project connecting Danjiang and Bashui.

The main hydrological characteristics of Danjiang extension data are as follows:

Runoff is the smallest and varies greatly from year to year. The annual runoff depth of Danjiang River Basin is below 250 mm, which is not only lower than the national average annual runoff depth of 273 mm, but also the smallest among the large water systems in Shaanxi Yangtze River Basin.

Tourism development:

Its rafting projects include mass rafting, elegant rafting, couple rafting and honeymoon rafting. 87 foreign friends from 1992 came to Fengdan to wander on May 1 International Labor Day, praising Shangluo Mountain as an ideal natural summer resort with beautiful scenery, both rugged in the north and charming in the south of the Yangtze River.

Baidu Encyclopedia-Danjiang