Indiana residents not only will have to deal with tainted drinking water, oil slicks, and mud filled rooms but a lot of them will have to deal with the shock that they did not have flood insurance. Many of these residents were not in traditional flood prone areas so they did not even consider a flood insurance policy... I bet they wish they had now.
If you are not one of these unfortunate Indiana residents, you still have time to consider flood insurance for your home. Here are some resources that may help:
Determine Your Insurance Needs: Home Owners Insurance 101
Understand What Home Owners Insurance Coverages You Have: Understanding Your Home Owners Insurance Policy
Learn About Flood Insurance: Floods: Preparing for the Worst
Learn the Flood Insurance Myth: Flood Insurance is Only for People Who Live in a High Risk Area
Although some Indiana residents might be regretting that they did not buy flood insurance, I still think that it is not a need for everyone.
There are usually pointers to the fact that a peril can strike a place. A little diligence will help everybody understand these pointers and determine if this is necessary in their peculiar circumstance.
What I consider fatal is just saying everything is okay because you think so (Without trustworthy data to back you up).