After reading the article, I’m torn as to whether or not this is a good idea.
How are the communities governed?
Who provides the utilities?
I see solar panels but what about power when there’s no sun?
How about all the services that comprise a community? Schools, churches, shops, restaurants, and other businesses?
The most tried and tested way to build in flood-risk areas is to lift the house off the ground. Humans have been building homes on stilts for millennia, and this technique is still popular in south-east Asia, Central America and Brazil.
More modern techniques include building on a raised platform like a beach house – a familiar sight in my wife’s native Australia – or simply on banks of earth or concrete. Of course this approach requires an element of second guessing: you need to build the accommodation above the level any floodwater will reach.
But the latest technology solves this problem: houses that float and rise with the floodwaters.
There’s a lot more to the article and a Google Search provides some amazing pictures of such homes.
More @ How to build a climate-proof home that never floods