Based on the context and the answer, generate a question. 

Context: The last picture I took on my first gawking venture down Highway 11 . It was about a week before they were letting people back into New Orleans . There was a marina , called Tites , at the end of Hwy . 11 before the bridge .

Answer:

There was lots of flooding .



What 's the most likely reason people were n't being let back into the city ?