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The risk of flooding in the United States is changing regionally, and the reasons could be shifting rainfall patterns and the amount of water in the ground. In a new study, University of Iowa engineers determined that, in general, the threat of flooding is growing in the northern half of the U.
S. and declining in the southern half. The American Southwest and West, meanwhile, are experiencing decreasing flood risk.Image credit: Image courtesy of the American Geophysical Union
