Effects of Hurricane Katrina in New Orleans after a brief period of overtopping (Industrial Canal) caused “scouring” or erosion of the earthen levee walls. In eastern New Orleans, levees along the Gulf Intracoastal Waterway failed in several places because they were built with sand and erodible materials instead of clay, an obvious construction flaw. Prior to Hurricane Katrina, New Orleans’ law enforcement was in disarray. It was inundated with corruption from higher up officials and had underpaid officers manning the streets. This enforcement lacked the trust of its citizens and failed to keep police brutality rates low. The city’s lack of organization caused for the New Orleans
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