It looks like New Orleans has quite a problem on their hand. Similar to the people who built their house on Sand or Thixotropic Clay, they choose a poor spot to construct their city. Why? It’s below all of River level, Sea level, and nearby-Lake level.
Well, I was watching a certain anime series with a rather interestingly theme song the other day and did some research on it. The song was named after a place near Tokyo called “Dream Island.” Basically, it’s an artificial island made entirely of garbage, then sealed up and covered in soil.
They need to do this to New Orleans. Basically, start rebuilding the highest parts of the town while using some other parts for a landfill for the rest of louisiana and maybe mississippi and parts of texas. Before too long you’ll have some areas that are over sea level and you can start covering it up with solid ground.