"The U.S. has more than 11,000 flood control dams. Many were built more than half a century ago, and delayed maintenance is starting to catch up with them. The problem is particularly acute in Oklahoma, which has more than 2000 dams and which, this year, has record rainfall."
Logan Layden reports for NPR's All Things Considered July 31, 2015.
Source: NPR, 08/03/2015
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