Natural hazards · Slidell

Slidell, LA natural hazards

Most of the natural-hazard damage FEMA expects in Slidell comes from hurricanes, and overall the risk is very high for a U.S. community. Flood insurance has paid 8,172 claims here since 1978. 17 federal disasters brought FEMA money into town.

FEMA National Risk Index, December 2025 · OpenFEMA claims, aid & declarations

Expected damage

How exposed is Slidell?

Very high

vs. U.S. communities

FEMA expects yearly storm and flood damage to homes and buildings in Slidell to be higher than in 96% of U.S. communities, mostly from hurricanes and inland flooding.

Hurricanes58%Inland flooding30%Everything else12%

By hazard

What Slidell faces

Each hazard’s share of the damage FEMA expects here, and how that compares with the rest of the country.

Hurricanes

58% of expected damage

Well above average · higher than 98% of U.S. places

Recorded about once every 4 years in the area

Inland flooding

30% of expected damage

Well above average · higher than 85% of U.S. places

Recorded about 2 times a year in the area

Lower here

Coastal floodingTornadoesHailIce stormsWinter weatherCold wavesHeat wavesWildfireEarthquakesLandslidesStrong windLightning

Not a risk here

DroughtAvalanchesTsunamisVolcanic activity

Flood risk changes street by street. Check a specific address on FEMA’s flood map, and ask about flood insurance before you buy.

Flood insurance claims

Does Slidell flood?

Every paid claim on a federal flood insurance policy in Slidell, from FEMA’s records.

8,172paid claims since 1978

$463Mpaid to owners

1,200homes flooded more than once

19782026

Biggest named events

Hurricane Katrina: 3,870 claims, $360M
Tropical Storm Allison: 669 claims, $12.7M
Hurricane Isaac: 594 claims, $23.7M

Homes that flooded again and again

Each house = 20 homes. ■ FEMA “severe repetitive loss” (421) ■ flooded 2+ times

of all homes
are insured

🏷️ 20% off flood insurance. Slidell is in FEMA’s Community Rating System (class 6) for its flood-proofing work.

Insurance rates: St. Tammany Parish.

What’s been done with FEMA grants

1,065homes raised above flood level

123flood-prone properties bought out and cleared

9buildings floodproofed

1storm safe rooms built

Disasters that hit Slidell

17 federal disasters brought FEMA money here

Disasters the President declared that paid out in Slidell itself: aid to households, or repair grants to the City of Slidell.

Brought FEMA money into SlidellDeclared for St. Tammany Parish only

2026

Tropical Storm Arthur

538 households applied for aid $801K aid approved

2024

Hurricane Francine

$164K to the City of Slidell for repairs

2021

Hurricane Ida

25,917 households applied for aid $24.8M aid approved $5.7M to the City of Slidell for repairs

2020

Hurricane Zeta

1 household applied for aid $91K to the City of Slidell for repairs

2020

Hurricane Delta

1 household applied for aid

2020

Hurricane Sally

$58K to the City of Slidell for repairs

2017

Tropical Storm Nate

$77K to the City of Slidell for repairs

2016

Severe Storms and Flooding

416 households applied for aid $556K aid approved $50K to the City of Slidell for repairs

2012

Hurricane Isaac

7,839 households applied for aid $5.9M aid approved $875K to the City of Slidell for repairs

2008

Hurricane Ike

149 households applied for aid $94K aid approved $255K to the City of Slidell for repairs

2008

Hurricane Gustav

7,142 households applied for aid $1.1M aid approved $790K to the City of Slidell for repairs

2005

Hurricane Rita

1,648 households applied for aid $456K aid approved $6K to the City of Slidell for repairs

2005

Hurricane Katrina

45,902 households applied for aid $242M aid approved $126M to the City of Slidell for repairs

2004

Hurricane Ivan

59 households applied for aid $51K aid approved $111K to the City of Slidell for repairs

2002

Hurricane Lili

$182K to the City of Slidell for repairs

2002

Tropical Storm Isidore

$154K to the City of Slidell for repairs

2001

Tropical Storm Allison

$106K to the City of Slidell for repairs

St. Tammany Parish has had 37 natural disasters declared since 1953, most often hurricanes and floods.

About these numbers

How to read this page

An average, not a forecastFEMA’s National Risk Index estimates the damage 18 kinds of natural hazards cause in a typical year, from decades of records and models. A quiet decade can follow a bad year.

Compared by rate“Higher than N%” compares yearly damage as a share of what’s here, so a big city isn’t rated riskier just for having more buildings. Slidell covers 5 census tracts, combined by population.

Money that reached townFlood claims are matched to Slidell’s own flood-insurance community; household aid to the registrant’s city; repair grants to the City of Slidell. FEMA’s model follows property values, so a place that recently lost many homes can rate lower than it feels.

FEMA’s expected losses across Slidell total about $21.0M 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.