New information that shows a greater risk of severe flooding is prompting the city of Des Moines to raise the height on levees throughout the city. The U.S. Army Corp of Engineers released a new study saying that the Des Moines River has been rising higher and more frequently over the past decade, and that the height of the Birdland and Central Place Levees should be built about a foot higher than previously thought. Both are still being built, so they'll just bring in more dirt.
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