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都江堰位于四川省灌县城西两公里的岷江干流上。岷江是长江的支流,发源于四川省松潘县境岷山南麓,流经茂汶、灌县、新津、乐山,到宜宾汇入长江,全长760多公里。岷江河源至都江堰渠首长340公里,集雨面积23037平方公里,多年平均流量为497秒立方米,年径流量为157亿立方米,实测最大洪峰流量6880秒立方米(1964年7月22日)。调查历史最大洪峰流量(渠首)为10200秒立方米(1933年9月叠溪地震形成大、小海子,10月海子局部溃决形成的洪水)。都江堰是我国著名的水利工程之一,历史悠久,
Dujiangyan is located on the Minjiang River, two kilometers west of Guanxian City, Sichuan Province. Minjiang River is a tributary of the Yangtze River. It originated from the south foot of Minshan in Songpan County, Sichuan Province. It flows through Maowen, Guanxian, Xinjin and Leshan and reaches the Yangtze River at Yibin. The total length is more than 760 kilometers. Minjiang River source to Dujiangyan canal head 340 km, rainwater catchment area of 23037 square kilometers, the average annual flow of 497 seconds cubic meters, the annual runoff of 15.7 billion cubic meters, the maximum peak flow measured 6880 seconds cubic meters (July 22, 1964) . The maximum peak flow (headrace) of the surveyed history was 10200 sf (floods caused by the collapse of the Diexi earthquake in September 1933, the small Haizi, and the partial Haitian collapse in October). Dujiangyan is one of China’s famous water conservancy projects, has a long history,