BOULDER, Colo. – A new study about the effects of warming temperatures predicts that flooding caused by rain falling on snowpack could more than double during the 21stcentury in parts of the American and Canadian West. The greatest flood risk increases are projected for the Sierra Nevada, the Colorado River headwaters, and the Canadian Rocky Mountains, according to the study by the University of Colorado Boulder and the National Center for Atmospheric Research. Flood risks could increase by as much as 200 percent in localized areas and potentially strain existing flood control infrastructure. (more)