New York 2140 is an interesting book examining what might happen to those coastal "drowned" cities, especially those buildings caught in the new intertidal zones.

https://www.goodreads.com/book/show/29570143-new-york-2140

That looks interesting, I might grab a copy when I have made a dent in my current pile.

Some architects are already proposing to build floating apartments off the piers in Manhattan - https://www.dezeen.com/2018/02/09/pier-40-manhattan-new-york...

One kind of nice/kind of weird part of it, is that it's mostly interconnected slices-of-life without a huge overarching plot (though that's not entirely true, either) -- that has made it quite good as a pick-up-put-down book: handy, considering it's length!

This is already happening in Amsterdam