<P> The Superdome sustained significant damage, including two sections of the roof when waterproof membrane had essentially been peeled off by the wind . On August 30, Louisiana governor Kathleen Blanco ordered the complete evacuation of the remaining people that sought shelter in the Superdome . They were then transported to the Astrodome in Houston, Texas . </P> <P> As of mid-day Monday, August 29, the eye of Hurricane Katrina passed east of the City subjecting it to hurricane wind conditions, but sparing New Orleans the worst impact . The City seemed to have escaped most of the catastrophic wind damage and heavy rain that had been predicted . Most buildings came through well structurally . </P> <P> However, the city's levee and flood walls designed and built by the US Army Corps of Engineers breached in over fifty locations . Storm surge breached the levees of the Mississippi River - Gulf Outlet Canal ("MR - GO") in approximately 20 places and flooded all of Saint Bernard Parish, the east bank of Plaquemines Parish and the historic Lower Ninth Ward . The major levee breaches in the city included breaches at the 17th Street Canal levee, the London Avenue Canal, and the wide, navigable Inner Harbor Navigation Canal, which left approximately 80% of New Orleans flooded . There were three major breaches at the Industrial Canal; one on the upper side near the junction with MR - GO, and two on the lower side along the Lower Ninth Ward, between Florida Avenue and Claiborne Avenue . The 17th Street Canal levee was breached on the lower (New Orleans West End) side inland from the Old Hammond Highway Bridge, and the London Avenue Canal breached in two places, on the upper side just back from Robert E. Lee Boulevard, and on the lower side a block in from the Mirabeau Avenue Bridge . Flooding from the breaches put the majority of the city under water for days, in many places for weeks . Many roads and buildings were damaged by Hurricane Katrina . </P> <P> 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 . </P>

Which factors contributed to the damage that hurricane katrina inflicted on new orleans