China Yangtze Three Gorges Project (TGP), as one of the biggest hydropower-complex project in the world, ranks as the key project for improvement and development of Yangtze River. The dam is located in the areas of Xilingxia gorge, one of the three gorges of the river, which will control a drainage area of 1 million km2 , with an average annual runoff of 451 billion m3 . The open valley at the dam site, with hard and complete granite as the bedrock, has provided the favorable topographical and geological conditions for dam construction. Three Gorges project will not only produce huge economic benefit, but also play great role in improving the ecological environment of Yangtze River area.The project can effectively adjust the upstream flood of Yangtze River, which will assure a flood control standard of the Jingjiang section, a downstream reach to Three Gorges of Yangtze River, arise from currently preventing 10-year flood to controlling 100-year flood. Even in case of a rare occurrence of 1000-year flood, mass damages or injuries can still be prevented. At the same time, social problems such as environmental deterioration and epidemics related to the flood or flood diversion can also be avoided. Thus the project will protect 1.5 million hectare of farmland and towns, and 15 million of people from flood damage at Jianghan Plain and Dongting Lake area. And also the project will raise the reliability of flood control in the mid and lower reach of Yangtze River, relieve the sand silt of Dongting Lake and create favorable conditions for dredge of the lake, and prevention and cure of the schistosomiasis epidemics in the lake area.Compared to the coal-fired power stations with equivalent electricity generation, Three Gorges Power Plant will decrease emission of 100 million tons of CO2, 2 million tons of SO2, 0.37 million tons of nitrogen oxide and a lot of waste water and solid waste. It will bring a great benign influence in improvement of environment, especially preventing acid rain and greenhouse effect in East and Central China.
link:http://www.ctgpc.com/