Homeowners assume purchasing homeowner's insurance covers the home from ALL natural disasters, including floods. It isn't so. Flood insurance is a separate policy. It is the homeowner's responsibility to research and ask insurance agents about these separate policies.
Flood insurance coverage isn't hard to find in the policy. Read your policy. If flood coverage is not there, revise the policy with the home insurance provider to include flood insurance coverage.
High-flood areas require flood insurance
Insurance companies will highly recommend flood insurance for high flood areas because the area flooded previously. The flooded area's chances of future flooding increase because it