Where is the source and destination of Bailong River?

The source of Bailong River is located in langmusi at the junction of luqu, Gannan Tibetan Autonomous Prefecture, Gansu Province and ruoergai county, Sichuan Province, and the destination is Jialing River.

The total length of the river is 576 kilometers, and the drainage area is 3 1.08 square kilometers. Rivers cross mountains and valleys, with an average gradient of 4.83%, a natural drop of 2,783 meters and an average annual flow of 389 cubic meters per second.

There are many canyons along the Bailong River, and the irrigation function is very weak, but the water energy reserve is 4.32 million kilowatts. Multi-cascade development is realized along the main tributaries, including large and medium-sized hydropower hubs such as Yanbikou and Zhu Bao Temple. The soil erosion in Diebu and Zhouqu counties of Bailong River is serious, and with various human factors, natural disasters such as mudslides often occur.

There are many ethnic groups living in Bailong River Basin, mainly including Han, Tibetan, Hui, Qiang, Mongolian and Miao. Historically, it is an important area for the integration of Han and ethnic minorities, and a strategic place between Han and Shu, with historical war relics all over the basin.

Hydrological characteristics

The average annual flow of Bailong River is 389 cubic meters per second, and the annual runoff is 65.438+02.268 billion cubic meters. The cross section of Bikou Reservoir in Gansu Province has an average annual flow of 272 cubic meters per second and an annual runoff of 8.582 billion cubic meters. The annual average flow of Wudu Station is 132.5 cubic meters per second, and the annual runoff is 465,438+79 million cubic meters.

Bailong River runoff is basically replenished by precipitation, and the annual runoff and flood modulus increase from upstream to downstream, with abundant water and stable annual runoff change. The flood is formed by rainstorm, and the rainstorm center appears below Bikou, and the flood rises and falls sharply, mostly from July to September.

Bailong River has less sediment, dense forests above the two estuaries, good vegetation and small river sediment concentration. According to the test data of Wudu Station, the average sediment discharge for many years is15.5 million tons, and the sediment concentration is 3.7 kg/m3, which mostly occurs in the flood season from July to June, accounting for 78.2%.

Baidu Encyclopedia-Bailong River