Controlled leaching of sediments in the Xiaolangdi Reservoir in China, an operation designed to help maintain storage capacity. Credit: Photo by DONG Baohua. (EurekAlert!)

Controlled flushing of sediment in a water reservoir in China, as part of an effort to maintain the reservoir's storage capacity.

Controlled leaching of sediments in the Xiaolangdi Reservoir in China, an operation designed to help maintain storage capacity.
Credit: Photo by DONG Baohua. (EurekAlert!)