NEW ORLEANS, Louisiana (CNN)-- Efforts to bolster a private New Orleans-area levee that had been in danger ... Nungesser said he did not know how many people remained there despite warnings ...

15. The catastrophic failure of the levee walls seals New Orleans' fate. Designed to protect the city from a surge of at least 11.2 feet above sea level, the walls failed with a maximum surge of ...

As the river swelled, Louisiana officials grew increasingly concerned that the levee system protecting New Orleans could break, flooding the city and causing potentially catastrophic damage.

As the river swelled, Louisiana officials grew increasingly concerned that the levee system protecting New Orleans could break ... still works the same way it did when it was first built.