Insurance-wise it is important to know the difference between rising water (flooding) and wind-driven leaking. Rising water damage is only covered by Federal Flood Insurance.
Homeowners insurance companies are going to be VERY picky about how they pay on damages from this storm. They are going to be taking a major hit. Even though I had replacement cost coverage, and no flood damage, I only received a fraction of the cost to repair the damage done to my home by the hurricanes of 2004.
Be sure to take lots of pictures of your damage and document it as much as possible. It will probably be necessary to make repairs long before an insurance assessor/adjuster can inspect your damages. Document, document, document! Get receipts for everything.
It sucks that it's that way, but that is the reality of it.