Inland Flood Risk: A Growing Threat to U.S. Homeowners

The Rising Tide of Inland Flood Risk

The devastation caused by Hurricane Helene in September 2024 underscores the increasing vulnerability of inland areas to flooding from both tropical storms and severe convective storms. According to the latest Triple-I “State of the Risk” Issues Brief, these events highlight the scale of the flood-protection gap in non-coastal areas. Private insurers are stepping up to help close that gap, but increased homeowner awareness and investment in flood resilience across all co-beneficiary groups will be needed as more and more people move into harm’s way.

The Flood-Protection Gap

Helene dumped 40 trillion gallons of water across Florida, Georgia, the Carolinas, Virginia, and Tennessee, causing hundreds of deaths and billions in insured losses. Much of the loss was concentrated in western North Carolina, with parts of Buncombe County – home to Asheville and its historic arts district – left virtually unrecognizable. Less than 1 percent of residents in Buncombe County had federal flood insurance when Helene struck. This experience echoed those of New York, New Jersey, and Pennsylvania in August 2021, when remnants of Hurricane Ida brought rains that flooded subways and basement apartments, with more than 40 people killed in those states.

Closing the Gap: Private Insurers and Resilience Investments

More than half of all homeowners with flood insurance are covered by NFIP, which is part of FEMA and was created in 1968 – a time when few private insurers were willing to write flood coverage. In recent years, however, insurers have grown more comfortable taking on flood risk, thanks in large part to improved data and analytics capabilities. The private flood market has changed since 2016, when only 12.6 percent of coverage was written by 16 insurers. In 2019, federal regulators allowed mortgage lenders to accept private flood insurance if the policies abided by regulatory definitions. The already-growing private appetite for flood risk gained steam after that. Private insurers are gradually accounting for a bigger piece of a growing flood risk pie.