Effects of Hurricane Katrina in New Orleans under water for days, in many places for weeks. Many roads and buildings were damaged by Hurricane Katrina. In a June 2006 report on the disaster, the U.S. Army Corps of Engineers admitted that faulty design specifications, incomplete sections, and substandard construction of levee segments, contributed to the damage done to New Orleans by Hurricane Katrina. A report released by the American Society of Civil Engineers in June 2007 concluded that two-thirds of the flooding in the city could have been avoided if the levees had held. The failure of the Hurricane Protection Project of New Orleans has prompted many
Hurricane preparedness for New Orleans Hurricane Ivan's threat to the city resulted in the largest evacuation of the city to date. Mayor Ray Nagin issued a call for a voluntary evacuation of the city at 6 pm on September 13. An estimated 600,000 or more evacuated from Greater New Orleans. The contraflow plan was put into full effect for the first time, but rather late in the evacuation due to various confusions. This proved valuable practice, for the contraflow was implemented much more smoothly in 2005. Hurricane Pam was a hypothetical hurricane used as a disaster scenario to drive planning for a 13-parish area in