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四川地域辽阔,河流众多,径流丰沛,落差巨大,蕴藏着丰富的水能资源。全省共有大中小河流1,370多条,其中河长1,000公里以上者有金沙江、雅砻江、大渡河、嘉陵江四条,河长100公里以上者115条,水能资源蕴藏量在一万千瓦以上者有380条。四川地势西高东低,省内的主要河流金沙江、雅砻江、大渡河等都是从海拔4,000～5,000米的高原上,奔腾而下,流至海拔300～500米的盆地内,天然落差3,000～4,000米。四川降水量大,为径流提供了丰富的来源。省内一般年降水量在600～1,000毫米之间,在峨
Sichuan vast territory, numerous rivers, abundant runoff, huge drop, contains a wealth of water resources. There are 1,370 large, medium and small rivers in the province, of which 4 are Jinshajiang River, Yalong River, Dadu River and Jialing River, with a river length of more than 1,000 km. There are 115 rivers with a length of 100 km or more. The reserves of hydropower resources are above 10,000 kilowatts There are 380 people. The topography of Sichuan is high in the west and low in the east. The major rivers in the province, such as the Jinsha River, Yalong River and Dadu River, all run down from 4,000 to 5,000 meters above sea level to the basins of 300 to 500 meters above sea level. 3,000 to 4,000 meters. Large precipitation in Sichuan provides a rich source for runoff. The general annual rainfall in the province of 600 to 1,000 mm between the Emei