Ten square miles under 10 feet of water. The Cedar River overflowed more than a mile into nine neighborhoods (lightest blue) in Iowa's second-largest city. Plus, 650 damaged-beyond-repair parcels are being returned to the floodplain and supplemented with 7 miles of permanent and removable floodwalls along which pedestrian trails will run. East Grand Forks, Minn., installed removable floodwalls after the Red River overflowed in 1997; as has Minnesota's St. Paul Holman Field Airport, which abuts the Mississippi River. Map: Sasaki Associates/Photo: City of Cedar Rapids Community Development Department
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