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Closing the Flood Insurance Gap



Updated November 26, 2019
There is a large flood insurance gap in the United States, where many people that are exposed to flood
risk are not covered by flood insurance. The National Flood Insurance Program (NFIP) is the primary
source of residential flood insurance. More than 22,000 communities participate in the NFIP, with more
than five million policies providing more than $1 3 trillion in coverage.
The NFIP identifies areas at high risk of flooding as Special Flood Hazard Areas (SFHAs). Property
owners are required to purchase flood insurance only if (1) their properties are in SFHAs, (2) their
communities participate in the NFIP, and (3) they have federally backed mortgages. Because the SFHA
boundary is central to NFIP mapping, it may create a false belief that flood risk changes abruptly at the
boundary and that properties outside the SFHA are safe and do not need flood insurance. However, about
20%  ofNFIP claims are for properties outside SFHAs, and all 50 states and five terrtores have
experienced floods since May 2018.
Recent floods highlight the issue of high uninsured losses. For example, in the October 2015 South
Carolina floods, the average NFIP penetration rate in counties with a federal disaster declaration was 5%
(Table 1). Nearly 90% of policies in South Carolina were concentrated at the coast, but the flood damage
was primarily inland, where few residents were insured (Figure 1).


















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