SIOUXLAND---South Dakota Gov. Dennis Daugaard says plastic liners may need to be replaced on some of the protective levees that were built to hold back flood water along the Missouri River.
Emergency earthen levees were built to protect Pierre, Fort Pierre, Dakota Dunes and some other communities from rising water levels as the U.S. Army Corps of Engineers increased releasees from Missouri River dams to flush water from heavy rains upstream.
Daugaard says he has noticed that the plastic liners placed on some levees have started to degrade.
He says that plastic will likely need to be replaced in the next week or so to make sure the levees continue to hold until water levels drop later this summer.