Sediment-laden water gushes out from the Xiaolangdi Reservoir to the Yellow River during a flood peak adjustment operation in central China's Henan province, June 30, 2014. Each year, the river bed rises as silt deposits accumulate, slowing water flow in the river's lower reaches. Since 2002, a number of 14 sediment-removal operations have been carried out at the Xiaolangdi Reservoir to clean up sediment in the Yellow River. [Photo/Xinhua]