'Lt. Gen. Carl Strock, chief of engineers for the Corps, dismissed suggestions that recent federal funding decreases or delayed contracts had any impact on levee performance in the face of Katrina's overwhelming force.

Instead he pointed to a danger that many public officials had warned about for years: The system was never designed to withstand a storm of Katrina's strength.

"It was fully recognized by officials that we had Category Three [hurricane] level of protection," Strock said. "As projections of Category Four and Five were made, [officials] began plans to evacuate the city.'

from this sight

http://news.nationalgeographic.com/news/2005/09/0902_050902_katrina_levees.html

Sorry, link didn't work.
Does now. --JC