Long term: how will flooding impact underground topography?

[NateFLA]

As the topic states, how do you think the floodwaters will affect the subterranean topography. Will this cause more "sinking" problems?
AFAIK NO isn't like FL insomuchas the ground isn't alot of washed out limestone which leads to huge sinkholes. But, still there must be washout and saturation problems.

How do you think they can deal with it, and what impact will it have?

[gunner1551]

If I was to rebuild it wouldnt be in No because this thing MIGHT happened again. Why would you want to put your life back together only to ahve it ripped apart once again. As per your question, I think it would cause alot of wash out problems. I am no soil expert and dont know the types of soil in the area and what effects water has on them. In addition to that I would have to think that the "sinking" will only increase as a result of the storm. It like when you dig in the sand at the beach and you hit water, the water keeps on coming in. The sea is slowly retaking the LA coast line.

[Persepone]

Well, New Orleans is not only in a bowl, but it is built on swampland so perhaps rather than "sinkholes" like Florida, they will have something that is more like "quicksand."

All along Louisiana, Mississippi, Alabama, etc. development has stripped away the types of vegetation that naturally help to protect the land...

I think that as a country, as the land becomes more and more populated, we need to look more carefully at what we strip away and the long-term consequences of replacing plant life, etc. with asphalt.