Not to belittle the tragedy that is taking place in Houston now, but who is really to blame?
My wife told me about a Texas A&M prof that has been worried about just this type of thing for quite a while. I googled and found this article:
https://one.arch.tamu.edu/news/2017/6/28/houston-flood-risk-expands-disaster/
Somebody got rich building those homes, but I bet they don't live there.