I quite like the approach. I think it would be interesting to look at flooding the whole area and then to begin a subtractive process raising roads/parks/buildings from the water.
The image forms part of a competition entry and I think the proposal is really relevant to what we're doing. It's well worth a look (see link below).
The article address is: http://www.archdaily.com/134895/resiliencity-map-lab/
