Water pours out of four sluices of the Three Gorges Dam in Yichang, Central China's Hubei province, July 7, 2012. The Three Gorges Dam opened its sluices on Saturday as a flood with the peak flow of 56,000 cubic meters per second has pushed up the water level to more than 151 meters in its reservoir, six meters higher than its flood control level. The Three Gorges Dam, the world's largest hydropower project, generates electricity, controls flooding by providing storage for water and adjusts shipping capacity on the Yangtze River, China's longest waterway. [Photo/Xinhua]

Water pours out of four sluices of the Three Gorges Dam in Yichang, Central China's Hubei province, July 7, 2012. [Photo/Xinhua]