New Orleans 1980s and 1990s, scientists observed that extensive, rapid, and ongoing erosion of the marshlands and swamp surrounding New Orleans, especially that related to the Mississippi River – Gulf Outlet Canal, had the unintended result of leaving the city more vulnerable than before to hurricane-induced catastrophic storm surges. New Orleans was catastrophically affected by what Raymond B. Seed called "the worst engineering disaster in the world since Chernobyl", when the Federal levee system failed during Hurricane Katrina in 2005. By the time the hurricane approached the city at the end of August 2005, most residents had evacuated. As the hurricane passed
Effects of Hurricane Katrina in New Orleans of New Orleans on the Crescent City Connection bridge. The I-10 Twin Span Bridge traveling east towards Slidell, suffered severe damage; 473 spans were separated from their supports and 64 spans dropped into the lake. The long Lake Pontchartrain Causeway escaped unscathed but was only carrying emergency traffic. On August 29, at 7:40 a.m. CDT, it was reported that most of the windows on the north side of the Hyatt Regency New Orleans had been blown out, and many other high rise buildings had extensive window damage. The Hyatt was the most severely damaged hotel in the city, with beds