Citizens of Fargo, N.D., and neighboring Moorhead, Minn., appear to have dodged another bullet, but only after an heroic, all-hands effort in late March in advance of floodwaters that ultimately surpassed a 1997 record flood. With little more than a week’s notice, an army of federal, state and local resources, along with sandbag-packing volunteers, built a maze of temporary dikes atop existing levees to withstand the onslaught of the rising Red River. Photo: U.S. Air Force Rapid erection of 38 miles of HESCO barriers helped raise levees in Fargo by 4 ft. At ENR press time, floodwaters in Fargo were
Arch dams, classically curved monoliths situated in narrow valleys, are not as common as other types of dams, such as embankment dams and gravity dams. ENR takes a look at some of the biggest arch dams in the world, both completed and under construction.