Photo: Chris Flook · CC BY-SA 4.0Storms, floods and disasters in Lewisville
Lewisville isn’t graded for hazard risk: Lewisville has 282 residents; we grade towns of 1,000 or more. Flood insurance has paid 5 claims here since 1981.
What Lewisville faces
Each hazard’s share of the building damage FEMA expects here, and how its rate compares with the rest of the country.
River and rain flooding
Tornadoes
Earthquakes
Shares are of FEMA’s expected building damage, the measure the grade uses; ranks compare each hazard’s building-damage rate with all 85,154 U.S. census tracts. In FEMA’s terms, river and rain flooding is FEMA’s “Inland Flooding” (rivers and streams overflowing their banks, or rain overwhelming drainage). FEMA defines coastal flooding as high or rising tides and storm surge, so surge damage is counted there. Drought isn’t listed: FEMA counts its losses in crops only.
Does Lewisville flood? Rarely: 5 flood claims since 1981
Every paid claim on a federal flood insurance policy in Lewisville, from FEMA’s records.
Lewisville isn’t in FEMA’s Community Rating System, which cuts flood insurance up to 45% in towns that do extra flood-proofing.
Insurance rates: Henry County.1 federal disaster brought FEMA money to Lewisville
Disasters that paid out in Lewisville itself (aid to households or repair grants to the Town of Lewisville), newest first, with that year’s flood claims.
- 2026Severe Storms, Straight-line Winds, Tornadoes, and Flooding16 households applied for aid$65K aid approved
Henry County has had 16 natural disasters declared by the President since 1953, most often severe storms, then winter storms. Not counted: the 2005 Hurricane Katrina evacuee emergency, which covered counties that took in evacuees.
Old photos of Lewisville after a storm or flood belong in the town’s history. Add one, or share what you remember below.
Add to the Lewisville archive →Get ready for what Lewisville faces
A short kit for the hazards that drive the building damage here, what to check before you buy, and where neighbors get alerts.
- Turn around at flooded roads: a foot of moving water can carry off a car.
- Flood insurance usually takes 30 days to start, so buy it before the forecast.
- Keep papers and medicines up high, in a grab-and-go bag.
- Pick your spot now: the lowest floor, an inside room, no windows.
- A watch means be ready; a warning means take cover now.
- Keep shoes and a flashlight by the bed.
- Drop, cover and hold on.
- Strap tall furniture and the water heater to the wall.
- Know how to shut off the gas.
- Look up the address on FEMA’s flood map.
- Ask the seller or landlord whether it has ever flooded, and what flood insurance costs there.
- Get a flood insurance quote early: policies usually start 30 days after you buy.
Know where neighbors sign up for alerts? Add it to the Handbook so everyone has it.
Questions about natural hazards in Lewisville
Does Lewisville flood?
Flood insurance has paid 5 claims in Lewisville since 1981, $12K in all. 1 properties have flooded more than once.
Is Lewisville in a flood zone?
Flood zones are drawn street by street, so the answer depends on the address: look it up on FEMA’s flood map. In Henry County, 18% of homes in mapped flood zones carry federal flood insurance, and 0.2% of all homes do.
How much is flood insurance in Lewisville?
FEMA’s Community Rating System list shows no discount for Lewisville’s flood program. Premiums depend on the building; policies usually start 30 days after you buy, so get a quote early.
What was the biggest storm in Lewisville?
By FEMA money that reached Lewisville, Severe Storms, Straight-line Winds, Tornadoes, and Flooding (2026): 16 households applied for aid, $65K approved.
Storm stories
Memories, warnings and help from neighbors in Lewisville.
Sources: FEMA National Risk Index v1.20 (December 2025), census-tract table, combined by where Lewisville’s residents lived in the 2020 census; OpenFEMA: NFIP redacted claims, multiple-loss properties, community status book and residential penetration rates, housing assistance (owners and renters), public assistance funded projects, hazard mitigation properties and disaster declarations. Homes: Census ACS 2020–24. Preparedness tips: Ready.gov. FEMA’s model is an average of expected damage, not a forecast. How hazard risk is graded.