Enter any address in St. Mary Parish, Louisiana to see its FEMA flood zone
Flash flooding events have been the most frequent type of flood reported in St. Mary Parish County over the last 30 years. Recent examples include an event on January 8, 2024, linked to an area of low pressure moving across Texas and Louisiana. Storm surge and tide events have also occurred, such as on June 19, 2024, when Tropical Storm Alberto pushed water levels into minor flood along the coast.
National Flood Insurance Program data indicates that properties in Zone A have experienced the highest number of claims, with an average payout of $15,547 and an average water depth of 1.8 feet. Properties in Zone V have seen fewer claims but with higher average payouts and water depths, averaging $25,763 and 7.0 feet respectively. Homeowners in Zone A and Zone V, as well as those in Zone X and Zone X_Shaded, should pay close attention to flood risk information.
Summary generated from NOAA storm narratives and NFIP claim data for this county. Not predictive.
11 NOAA storm reports from this county describe what happened, in the words of the meteorologists who were there.
St. Mary Parish, Louisiana has recorded 31 flood-related events since 1996 according to NOAA's Storm Events Database, including 22 flash floods and 6 river or area floods. The county has received 49 federal disaster declarations, 11 of which involved flooding or coastal storms. Enter any address above to check its FEMA flood zone designation.
FEMA Disaster Declarations (1965–2026)
Source: OpenFEMA Disaster Declarations Summaries.
| Declaration | Type | Date |
|---|---|---|
| Severe Winter Storm | Winter Storm | Jan 23, 2026 |
| Tropical Storm Francine | Hurricane | Sep 10, 2024 |
| Hurricane Francine | Hurricane | Sep 9, 2024 |
| Seawater Intrusion | Other | Sep 20, 2023 |
| Tropical Storm Nicholas | Coastal Storm | Sep 12, 2021 |
| Hurricane Ida | Hurricane | Aug 26, 2021 |
| Tropical Storm Ida | Hurricane | Aug 26, 2021 |
| Severe Winter Storm | Severe Ice Storm | Feb 11, 2021 |
| Severe Winter Storms | Severe Ice Storm | Feb 11, 2021 |
| Hurricane Zeta | Hurricane | Oct 26, 2020 |
NOAA Storm Events Database (1996–2025)
Source: NOAA National Weather Service Storm Events Database.
| Type | Date | Damage |
|---|---|---|
| Storm Surge/Tide | Jun 19, 2024 | 0.00K |
| Hurricane (Typhoon) | Sep 11, 2024 | 10.00M |
| Flash Flood | Jan 8, 2024 | 0.00K |
| Flash Flood | Jul 14, 2019 | 0.00K |
| Flash Flood | Jun 7, 2019 | 0.00K |
| Flash Flood | Apr 4, 2019 | 0.00K |
| Flash Flood | Aug 14, 2016 | 2.50M |
| Flood | Aug 14, 2016 | 25.00M |
| Flash Flood | Aug 5, 2016 | 5.00K |
| Flash Flood | Apr 14, 2015 | 0.00K |
Storm Surge/Tide — Jun 19, 2024
Tropical Storm Alberto moved across the western gulf and into Northeast Mexico. The large wind field of the disorganized system pushed water levels into minor flood along the coast of Southeast Texas and South Louisiana.
Hurricane (Typhoon) — Sep 11, 2024
Francine originated from a tropical wave that emerged off the West coast of Africa on August 28th. The wave traversed the tropical Atlantic Ocean with minimal organization, reaching the Leeward Islands by September 1st. The tropical wave reached the Yucat��n Peninsula by September 6th, emerged into the Bay of Campeche by September 7th, with a broad surface low pressure noted by September 8t...
Flash Flood — Jan 8, 2024
An area of low pressure developed over the Texas Hill Country and moved toward east Texas and western Louisiana. Severe weather occurred along a warm front and then a few more strong to severe storms developed with the cold front.
Flash Flood — Jul 14, 2019
A mesoscale convective vortex interacted with a weak cold front over the the southeast states and northeast Gulf of Mexico. The surface low that developed moved southwest across the gulf then northwest into the south central Louisiana coast. The first tropical watches were issued July 10th from the National Hurricane Center and the center of minimal hurricane made landfall near Intracoastal Cit...
Flash Flood — Jun 7, 2019
Deep moisture streamed into the area ahead of an upper level trough and weak cold front. Precipitable water values ranged from 2 to 2.5 with the slow moving system which caused efficient rain producing storms and lead to flash flooding. Several tornadoes also occurred.
Source: NOAA National Weather Service Storm Events Database.
Source: OpenFEMA NFIP Individual Claims (2.25M records analyzed).
FEMA assigns flood zone designations to areas in St. Mary Parish, Louisiana:
AE High Risk — 1% annual chance of flooding. Insurance required.
VE Very High Risk — Coastal flooding with wave action.
X (Shaded) Moderate Risk — 500-year floodplain.
X Low Risk — Outside major floodplains.
Properties in St. Mary Parish, Louisiana that are in FEMA-designated Special Flood Hazard Areas (zones A and V) with federally backed mortgages are required to carry flood insurance.
Even outside high-risk zones, flood insurance is recommended. From 2014 to 2024, nearly one-third of NFIP claims came from outside the high-risk Special Flood Hazard Area.
Visit FloodSmart.gov to find an agent and get a quote.