Flood water is released from the Xiaolangdi Reservoir, a gigantic hydropower project on the Yellow River, in Jiyuan, central China's Henan Province, July 24, 2012. Due to the downpours in the upper reaches of the Yellow River, China's second longest, the Xiaolangdi Reservoir and Xixiayuan Reservoir experienced a flood, with an average flow of 2,600 cubic meters of water per second. (Xinhua/Miao Qiunao