Another post for National Flood Safety Awareness Week: Here in the rainy Northwest, we can't say this often enough: a standard homeowners insurance policy does NOT cover flooding.
The good news is that flood insurance is widely available through the National Flood Insurance Program. It's a federally run insurance program, but sold by local agents and brokers. For most homeowners, the NFIP is the first stop for flood coverage.
If you live in an area with a high chance of flooding (a "Special Flood Hazard Area"), your lender will generally require you to have flood insurance. Even if you live in a minimal or moderate flood hazard area, you may still want to buy it.
There are, however, limits to federal flood insurance. For commercial structures, for example, the NFIP maximum is $500,000 for the building and $500,000 for the contents. Businesses also may need additional coverage that isn't available through the NFIP, such as business interruption coverage.