A federal court judge in New Orleans who found the U.S. Army Corps of Engineers liable for damages claimed by five residents of an area inundated during Hurricane Katrina in 2005 limits the area to which his decision applies. But Judge Standwood R. Duval Jr. also blasts the Corps for putting lives and property at risk for decades by failing to properly operate and maintain a navigational channel it built between 1956 and 1968 below New Orleans. He further faults the Corps for failing to comply with the National Environmental Protection Act of 1969 for reporting on environmental degradation caused
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.