I've looked at the projections, and Manhattan's not nearly as screwed as Miami. Our foundation is mostly rock, I think, and a lot of this island has a relatively high elevation (as anyone who has walked up the giant hill to CCNY would happily tell you). Of course, the financial district will probably be toast, but things will just get pushed further into the bronx/inwood areas as is already happening now due to rent prices. I don't think anyone will care if we have to abandon Staten Island...

Miami, on the other hand, is mostly flat and is sitting on a porous foundation, in addition to being right next to the everglades. There was a really interesting article recently on it:

http://www.rollingstone.com/politics/news/why-the-city-of-mi...

Yes, the caption is "Miami after Hurricane Wilma in 2005".

However, Miami Beach looks like that after every heavy rain. Hell, my folks' place in South Miami experiences flooding after heavy rains.