Here's an op-ed piece that's specifically about Superstorm Sandy and rebuilding after it, but I think that it's something that we should all consider, not just those who live along coasts: After Sandy.
IIRC, back in the 1990s (or maybe it was during GWB's first term), the feds attempted to convince owners along the Missouri or Mississippi River to consider relocation after a particularly nasty flooding episode. I'm NOT sure how successful that policy was.
Relocating people rather than letting them rebuild in flood prone areas is something that I'm in favor of. I'm tired of having my tax dollars in various forms go to the same people to rebuild every few years because of flooding. For myself, I wouldn't buy in a flood way, and I sure wouldn't rebuild. I'd be willing to give these people twice the value of their flood insurance for them to build new outside the flood zone. I'd be willing to have the feds give outright grants to get the people out of harm's way. If you want to rebuild after a flood, then find your own insurance or go without. I'm willing to help people hit by disaster, but when you deliberately put yourself back in harm's way, then you're on your own.