Flood history · Sweeny, TX 77480
Flood insurance claims in Sweeny, TX 77480
363 claims since 1979 and $14.1 million paid. Here's what the public record shows, and how to check a specific address.
Claims by year
Every NFIP flood insurance claim reported in ZIP 77480 since 1978.
What the record says
About 56% of claims here were on properties rated outside high-risk zones (zones X, B or C). A lower-risk zone on the map is not a guarantee.
Losses are spread across many events; the largest, Unnamed flooding, accounts for 40% of claims.
Flooding here is recent: 144 claims (40%) were in the last 10 years.
The most commonly recorded cause is heavy rain or snowmelt collecting faster than it drains, which can happen far from any river or coast.
Biggest flood events
| Event | Year | Claims | Share |
|---|---|---|---|
| Unnamed flooding | 1991 | 145 | 40% |
| Hurricane Harvey | 2017 | 98 | 27% |
| Tropical Storm Claudette | 1979 | 17 | 5% |
| Hurricane Beryl | 2024 | 4 | 1% |
| Tropical Storm Nicholas | 2021 | 1 | 0% |
| Texas Severe Winter Storms | 2021 | 1 | 0% |
Flood zone at time of claim
NFIP communities
Federal disaster declarations in Brazoria County
Flood, hurricane and storm declarations since 2000.
18 flood, storm or hurricane declarations for Brazoria County since 2000.
Check a specific address in Sweeny.
ZIP-level history is the backdrop. See the official FEMA flood zone, ground elevation and next steps for one property, free.
Sources: FEMA OpenFEMA NFIP Redacted Claims (v3) and Disaster Declarations Summaries, FEMA NFIP Community Status Book; place names from GeoNames (CC BY 4.0). Data as of 2026-10-09. Payments are net building + contents payments in dollars at the time paid, not adjusted for inflation. Claims are grouped by the ZIP code reported on the claim. This product uses the FEMA OpenFEMA API but is not endorsed by FEMA. Information only; not an official flood zone determination or insurance advice.