Enter any address in DeWitt County, Texas to see its FEMA flood zone
Flash flooding from thunderstorms is the most frequent flood event in DeWitt County, TX, with 105 recorded instances in the last 30 years. Other flood events, including tropical storms and hurricanes, have occurred less frequently. Recent examples include flash flooding on May 13, 2023, caused by slow-moving thunderstorms producing locally heavy rain, and another flash flood event on June 14, 2025, resulting from thunderstorms over the Coastal Plains.
National Flood Insurance Program (NFIP) claims data indicates that properties in Zone A have experienced the highest number of claims, with an average payout of $24,847 and an average water depth of 2.9 feet. Properties in Zone X also show a significant number of claims, with a higher average payout of $35,086, though the average water depth was lower at 1.2 feet. Residents in Zone A, as well as those in Zone X, should pay particular attention to flood risk.
Summary generated from NOAA storm narratives and NFIP claim data for this county. Not predictive.
34 NOAA storm reports from this county describe what happened, in the words of the meteorologists who were there.
DeWitt County, Texas has recorded 126 flood-related events since 1996 according to NOAA's Storm Events Database, including 105 flash floods and 19 river or area floods. The county has received 22 federal disaster declarations, 4 of which involved flooding or coastal storms. Enter any address above to check its FEMA flood zone designation.
FEMA Disaster Declarations (1967–2024)
Source: OpenFEMA Disaster Declarations Summaries.
| Declaration | Type | Date |
|---|---|---|
| Hurricane Beryl | Hurricane | Jul 5, 2024 |
| Severe Winter Storm | Severe Ice Storm | Feb 11, 2021 |
| Severe Winter Storms | Severe Ice Storm | Feb 11, 2021 |
| Covid-19 | Biological | Jan 20, 2020 |
| Covid-19 Pandemic | Biological | Jan 20, 2020 |
| Hurricane Harvey | Hurricane | Aug 23, 2017 |
| Severe Storms, Tornadoes, Straight-line Winds And Flooding | Severe Storm | May 4, 2015 |
| Hurricane Ike | Hurricane | Sep 7, 2008 |
| Hurricane Gustav | Hurricane | Aug 27, 2008 |
| Extreme Wildfire Threat | Fire | Nov 27, 2005 |
NOAA Storm Events Database (1996–2025)
Source: NOAA National Weather Service Storm Events Database.
| Type | Date | Damage |
|---|---|---|
| Flash Flood | Jun 14, 2025 | 0.00K |
| Flash Flood | May 13, 2023 | 0.00K |
| Flash Flood | Oct 14, 2021 | 0.00K |
| Flash Flood | May 12, 2020 | 0.00K |
| Flood | Aug 28, 2017 | 3.00M |
| Hurricane (Typhoon) | Aug 26, 2017 | 100.00K |
| Flash Flood | May 30, 2015 | 0.00K |
| Flash Flood | Oct 24, 2015 | 0.00K |
| Flash Flood | Jun 17, 2015 | 0.00K |
| Flash Flood | May 15, 2015 | 0.00K |
Flash Flood — Jun 14, 2025
An outflow boundary moved inland from the coast and generated thunderstorms over the Coastal Plains. Some of these storms produced locally heavy rain that led to flash flooding.
Flash Flood — May 13, 2023
An upper level trough moved over a moist, unstable airmass and generated thunderstorms. Storms initially formed over the higher terrain in Mexico and moved across the Rio Grande into Texas. Some storms produced damaging wind gusts. Storms eventually congealed into a slow-moving line that produce locally heavy rain leading to flash flooding.
Flash Flood — Oct 14, 2021
A complicated weather pattern developed over South Central Texas when a dryline and cold front moved out of West Texas as an upper level low moved into the Central Plains. At the same time the remnants of Pacific Hurricane Pamela moved across northern Mexico. The airmass over the region was warm and moist with near record precipitable water values. This set up led to an excessive rain episode w...
Flash Flood — May 12, 2020
A mesoscale convective vortex developed overnight and with daytime heating generated strong thunderstorms during the morning. Some of these storms produced tornadoes and heavy rain that led to flash flooding.
Flood — Aug 28, 2017
Hurricane Harvey moved onshore as a Category 4 hurricane over San Jose Island east of Rockport during the late evening of August 25th. Harvey moved inland entering southern DeWitt County during the morning of August 26th as a Category 1 hurricane. It continued to weaken as it moved farther inland eventually reaching south central Gonzales County as a tropical storm during the late evening of A...
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 DeWitt County, Texas:
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 DeWitt County, Texas 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.