History of New Orleans the effects of a major hurricane on and after August 29, 2005, as Hurricane Katrina made landfall in the gulf coast near the city. In the aftermath of the storm, what has been called "the largest civil engineering disaster in the history of the United States" flooded the majority of the city when the levee and floodwall system protecting New Orleans failed. On August 26, tracks which had previously indicated the hurricane was heading towards the Florida Panhandle shifted westward, initially centering on Gulfport/Biloxi, Mississippi and later shifted further westward to the Mississippi/Louisiana state line. The city became aware that
Hurricane preparedness for New Orleans Wetlands of Louisiana. The weight of large buildings and infrastructure and the leaching of water, oil and gas from beneath the surface across the region have also contributed to the problem. Following the great floods of 1927, the Mississippi River was surrounded by a series of levees meant to protect the city from such floods. In 1965, New Orleans was hit by Hurricane Betsy, which caused tremendous flooding in the New Orleans area. The federal government began a levee-building program to protect New Orleans from a Category 3 hurricane (the same strength as Betsy). These series of levees were completed