For many homeowners, the decision to buy flood insurance begins and ends with one question: Am I in a FEMA flood zone? If the answer is no, many assume they're financially protected from flooding.
According to flood specialists at Amwins, that assumption leaves millions of homeowners exposed.
FEMA's flood maps remain a useful tool for identifying the highest-hazard areas, but they were never designed to show where flooding actually happens. Advances in data, modeling and analytics have made that gap impossible to ignore.
"Those designated zones are not indicative of where flooding is going to be,” said Ivan Maddox (pictured on the left), product development specialist for flood at Amwins. “Flooding doesn't stop where there's a line on a map."
The most common misconception, Maddox said, is that flood insurance is only for properties in Special Flood Hazard Areas. But industry analyses have found that a large majority of flooded properties were outside FEMA's official high-hazard flood zones. For example, after Hurricane Debby, a First Street analysis estimated that 78% of flooded properties were outside FEMA's designated high-risk flood zones.
FEMA's own data show that about 29% (nearly one-third) of National Flood Insurance Program claims from 2014–2024 came from properties outside high-risk flood areas, demonstrating that significant flooding occurs beyond mapped high-hazard zones.
Maddox said proximity breeds false comfort. "A common misconception is that two houses away from a FEMA-designated high-risk zone feel like somehow that risk stops two houses away," he said.
The other hard lesson homeowners tend to learn only after a loss: a standard homeowners policy generally won't respond.
"A lot of people have the assumption with their homeowners policy that flood insurance is covered, and it is in fact not," said Colin Tinley (pictured on the right), who leads Amwins' flood business. Whether the water comes from hurricane storm surge, heavy rainfall or an overflowing river, that peril typically sits outside the homeowners form and requires a separate flood policy.
Homeowners also tend to misread small annual probabilities. Tinley explained: "People think, 'I have a 1% chance of flooding, so maybe my risk isn't that high.' But if you extrapolate that to a normal 30-year mortgage, it's actually closer to a 26% chance of a flood occurring at some point during that period.”
Recent events have underscored the growing protection gap.
Tropical Storm Arthur, the first named storm of the 2026 Atlantic hurricane season, formed off the Texas coast and moved inland in mid-June, never reaching hurricane strength but dumping torrential rain across the Gulf Coast.
Parts of Louisiana's Avoyelles Parish saw more than two feet of rain, and at least 200 homes were flooded, with the governor declaring a state of emergency across several parishes.
For the Amwins specialists, the presence of catastrophic flood but no headline-grabbing wind is notable because it distorts the view of risk. "Flood risk is hyperlocalized a lot of times," Tinley said. "Though there was a lot of flooding that came from Arthur, unless it's a Hurricane Ian type of event, it doesn't create the same awareness a hurricane wind event does."
Maddox noted: "We've got quite a lot of coverage placed down there through our different programs, and we've had fewer than five claims so far. It’s just another indication of how not enough people are carrying flood insurance in that area."
Historically, pricing flood outside the obvious high-hazard corridors was close to guesswork. That has changed sharply over the past decade.
"Anyone can tell you there's flood risk next to the Mississippi River in Louisiana," Maddox said. "But as you move into the lower-risk areas, you really need a high level of sensitivity to detect and measure the flood risk in those more subtle areas. That's where a lot of the advancements in the last five to 10 years have taken place."
Twenty years ago, he added, "the data didn't exist and no one knew how to do it."
Recognizing the need for quality data in the market, Amwins has invested heavily in new data sets, such as elevation data, flood and hazard maps, as well as a platform “to bring it all together so we can apply them efficiently and intelligently," Maddox said.
To support retail agents, Amwins built Amwins IQ, a digital platform that lets agents compare multiple residential flood markets in one place. The platform currently offers five primary residential flood markets, with excess flood being added this summer and commercial primary and excess planned by year-end.
"For any risk a retailer wants to cover, we're going to have a very compelling solution,” said Maddox.
Alongside the third-party markets, Amwins offers its proprietary Amwins Alpha product, built on the company's own view of risk and available only through Amwins.
And despite the digital front end, Tinley stressed the human layer: "Speed is a really important part of the flood transaction. But when things go wrong, we want to make sure there's a person people can talk to.”
This article was written in partnership with Amwins Group.
