http://qz.com/797380/reservoirs-methane-emissions-climate-change/

Katherine Ellen Foley on the problem with “clean” hydropower. “Globally, the reservoirs created by dams may actually contribute almost a gigaton of carbon dioxide-equivalent emissions—about 25% more than they had previously thought. This means that we’ve almost certainly been underestimating how much greenhouse gas we’ve been shooting into the atmosphere.”

Another reason to let rivers run their natural course….too late to stop China’s 3 River Dam on Yangtze.