hydrology
The main rivers in Chongqing are Yangtze River, Jialing River, Wujiang River, Fujiang River, Qijiang River, Daning River, Apeng River and Youshui River. The main stream of the Yangtze River runs through the whole territory from west to east, with a total length of 665 kilometers, and passes through three anticlines in Wushan, forming the famous Qutang Gorge, Wuxia Gorge and Xiling Gorge in Hubei, namely the world-famous Three Gorges of the Yangtze River. Jialing River comes from the northwest and joins the Yangtze River in Yuzhong District, and Wujiang River joins the Yangtze River in Fuling District. There are Bili Gorge, Wentang Gorge and Guanyin Gorge, which are the Three Gorges of Jialing River.
Extended data
Most of the annual average relative humidity in Chongqing is 70%~80%, which is a high humidity area in China. The sunshine hours in the whole year are 65,438+0,000 ~ 65,438+0,400 hours, and the sunshine percentage is only 25%~35%, which is one of the regions with the least sunshine in China, with less sunshine in winter and spring, accounting for only about 35% of the whole year. The main climatic characteristics can be summarized as follows: warm winter and early spring, hot summer and cool autumn, four distinct seasons and long frost-free period; The air is humid and the precipitation is abundant; Weak solar radiation and short sunshine time; There are more clouds and less frost and snow; Light and warm water are in the same season, with remarkable stereoscopic climate, abundant climatic resources and frequent meteorological disasters.
Chongqing is foggy under the dual effects of topography and climate, and is known as "Fog Capital Chongqing" and "Fog Capital". The average annual foggy day is 104 days, while the average annual foggy day in London, England, which is known as the foggy capital of the world, is only 94 days, and that in Tokyo, Japan, which is the foggy capital of the Far East, is only 55 days. Wu Yun in Bishan District has 204 foggy days throughout the year, which is known as "the best in the world".
Baidu Encyclopedia-Chongqing