A man walks across the washed-out Wagonwheel Gap Road in Boulder, Colo., on Monday. Mark Leffingwell /Reuters/Landov hide caption

itoggle caption Mark Leffingwell /Reuters/Landov

John Hoffenberg watches as floodwaters flow down a street in Boulder, Colo., on Sunday. Mark Leffingwell/Reuters/Landov hide caption

itoggle caption Mark Leffingwell/Reuters/Landov

Samantha Kinzig of Longmont, Colo., and her daughter Isabel, 5, took a close look at a damaged bridge in Longmont Friday. Heavy rains that fueled widespread flooding in numerous Colorado towns have eased, but forecasters predict more on Saturday and Sunday. Marc Piscotty/Getty Images hide caption

itoggle caption Marc Piscotty/Getty Images