Do you all have a reading comprehension problem? If the levees had held, there would not have been any flooding, and no need to evacuate.
http://www.upi.com/Top_News/2006/04/06/Corps-of-Engineers-admits-design-failure/UPI-91851144355032/
http://www.cbsnews.com/stories/2006/06/01/national/main1675244.shtml
http://articles.sfgate.com/2006-06-02/news/17298109_1_floodwalls-levee-design-hurricane-protection-system