The U.S. Army Corps of Engineers is reducing releases from six dams on the Missouri River as the reservoirs behind them empty the runoff of record snowfall and record spring rains. Related Links: Blame Game As River Rises Near South Dakota Homes The reductions will slow the record flow that has sent the 2,341-mile river over its banks and strained levees in six states.At Fort Peck Dam in Montana, the Corps started cutting back releases July 20 to 35,000 cubic feet per second from 40,000 cfs. On Aug. 1 the release will be cut to 30,000 cfs. Similarly, the Corps
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.