Gretna, LA natural hazards
Most of the natural-hazard damage FEMA expects in Gretna comes from hurricanes, and overall the risk is very high for a U.S. community. Flood insurance has paid 3,092 claims here since 1978. 16 federal disasters brought FEMA money into town.
FEMA National Risk Index, December 2025 · OpenFEMA claims, aid & declarationsHow exposed is Gretna?
FEMA expects yearly storm and flood damage to homes and buildings in Gretna to be higher than in 95% of U.S. communities, mostly from hurricanes.
What Gretna faces
Each hazard’s share of the damage FEMA expects here, and how that compares with the rest of the country.
Hurricanes
Inland flooding
Lower here
Not a risk here
Does Gretna flood?
Every paid claim on a federal flood insurance policy in Gretna, from FEMA’s records.
Biggest named events
- Hurricane Katrina: 430 claims, $20.5M
- Tropical Storm Allison: 34 claims, $126K
- Hurricane Isaac: 26 claims, $459K
Homes that flooded again and again
Each house = 6 homes. ■ FEMA “severe repetitive loss” (118) ■ flooded 2+ times
are insured
What’s been done with FEMA grants
16 federal disasters brought FEMA money here
Disasters the President declared that paid out in Gretna itself: aid to households, or repair grants to the City of Gretna.
Hurricane Francine
Hurricane Ida
Hurricane Zeta
Hurricane Delta
Hurricane Isaac
Tropical Storm Lee
Hurricane Ike
Hurricane Gustav
Severe Storms and Tornadoes
Hurricane Rita
Hurricane Katrina
Tropical Storm Cindy
Hurricane Ivan
Hurricane Lili
Tropical Storm Isidore
Tropical Storm Allison
Gretna and the towns around it
How to read this page
FEMA’s expected losses across Gretna total about $12.0M a year, counting buildings, people and crops.
Sources: FEMA National Risk Index (December 2025); 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. Census tracts: U.S. Census Bureau.