Farmers in Iowa and four other states last week filed a lawsuit seeking compensation from the U.S. Army Corps of Engineers for damages caused by devastating, recurrent Missouri River flooding from 2006 to 2011.

The 2011 flood lasted more than 100 days and was declared the worst in the region’s history. It deposited more than four feet of sand on land owned by David and Patrick Newlon, who farm near Percival in southwest Iowa. The Newlons joined nearly 200 farmers, small businesses and other riverside property owners in the lawsuit.

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