`` On the other hand , the worst-case scenario is that the water rises , we 're not able to manage it , it finds the weak areas , exploits those vulnerabilities , perhaps even segments of the river levee get taken out by erosion or collapse due to failure of saturated levees or other things could happen -- ships get loose in the river , barges of chemicals run into the side of the levee . '' Hope prevails that the levee system for Mississippi River Delta will hold . `` Landscape changes considerably '' if levees fail , expert Roger Carter says . The levee system `` never been tested under flood conditions like this '' Nature is going to exploit our stupidity , '' says Roy Dakka 's LSU .
Hope prevails that the levee system for Mississippi River Delta will hold . `` Landscape changes considerably '' if levees fail , expert Roger Carter says . The levee system `` never been tested under flood conditions like this '' Nature is going to exploit our stupidity , '' says Roy Dakka 's LSU .