>how are we going to deal with this at any kind of scale?
Get the Army Corps of Engineers to hire the Dutch.
Get the Army Corps of Engineers to hire the Dutch.
Nola should have taken the opportunity to move and rebuild on higher ground.
Maintaining a constant war on water is still a lot cheaper than colonizing the moon or mars; and the ROI is pretty decent.
Thing is, if the land wasn't sinking to begin with, exactly why were you considering levees in the first place? ;-)
Whatever the case may be, if you're building levees, you need to factor in the sink rate of the land around you, among the many factors. And you need to factor in the cost to maintain them indefinitely.
It's an expensive proposition; but by the simple fact that you're alive, standing there, and considering it already, chances are the ROI is worth it.