Of course it was. As are almost coastal urban sprawls. worse, no one wants to spend in funding out a full response plan at all. After all, Harvey easily called for a full evacuation of the flood plain. That would have saved everyone.
Actually engineering infrastructure to minimize damage is never going to be properly funded. But setting code to produce flood ready foundations is cheap and easy.
Thus evacuation is a practical solution and while you still have wind damage most are out of harms way while the water drains out. The all important restoration bill is then a fraction of what we are now facing.
It is high time that we demand engineers sign off on all building on flood prone land with an estimated survival value as well. That allows insurance to be fine tuned or even outright prohibited. all this is completely predictable. .