Enter any address in Duval County, Texas to see its FEMA flood zone
Flash flooding from slow-moving thunderstorms is the most frequent flood event in Duval County, TX, with 36 such events recorded in the last 30 years. For example, on July 7, 2023, thunderstorms produced 4 to 8 inches of rainfall, leading to flooded roads near San Diego. Tropical Storm Harold also impacted the region on August 22, 2023, making landfall as a 50 mph tropical storm.
National Flood Insurance Program (NFIP) data shows claims have been filed in multiple flood zones. Zone A experienced 6 claims with an average payout of $10,072 and an average water depth of 0.2 feet. Zone X had 3 claims averaging $13,963 with 0.7 feet of water, and Zone X_Unshaded had 2 claims averaging $2,350 with 1.0 foot of water.
Homeowners in Duval County should be aware of their specific flood risk. Those in Zone A, which has seen a higher number of claims, and properties near creeks and rivers, as indicated by past flood events, may face a greater risk.
Summary generated from NOAA storm narratives and NFIP claim data for this county. Not predictive.
12 NOAA storm reports from this county describe what happened, in the words of the meteorologists who were there.
Duval County, Texas has recorded 42 flood-related events since 1996 according to NOAA's Storm Events Database, including 36 flash floods and 3 river or area floods. The county has received 20 federal disaster declarations, 2 of which involved flooding or coastal storms. Enter any address above to check its FEMA flood zone designation.
FEMA Disaster Declarations (1967–2021)
Source: OpenFEMA Disaster Declarations Summaries.
| Declaration | Type | Date |
|---|---|---|
| Severe Winter Storm | Severe Ice Storm | Feb 11, 2021 |
| Severe Winter Storms | Severe Ice Storm | Feb 11, 2021 |
| Hurricane Hanna | Hurricane | Jul 25, 2020 |
| Covid-19 | Biological | Jan 20, 2020 |
| Covid-19 Pandemic | Biological | Jan 20, 2020 |
| Severe Storms, Tornadoes, Straight-line Winds And Flooding | Severe Storm | May 4, 2015 |
| Wildfires | Fire | Apr 6, 2011 |
| Tropical Storm Alex | Hurricane | Jun 27, 2010 |
| Wildfires | Fire | Mar 14, 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 |
|---|---|---|
| Tropical Storm | Aug 22, 2023 | 25.00K |
| Flash Flood | Jul 7, 2023 | 0.00K |
| Flash Flood | Aug 16, 2022 | 100.00K |
| Flood | Aug 16, 2022 | 100.00K |
| Flash Flood | Jul 8, 2021 | 0.00K |
| Tropical Storm | Jul 25, 2020 | 0.00K |
| Flash Flood | Jun 19, 2018 | 0.00K |
| Flash Flood | Oct 24, 2015 | 0.00K |
| Flash Flood | Mar 18, 2015 | 0.00K |
| Flash Flood | Jun 17, 2015 | 0.00K |
Tropical Storm — Aug 22, 2023
Tropical Storm Harold moved west across south Texas on the 22nd. An area of low pressure developed over the central Gulf of Mexico on the 21st. A large area of high pressure over the central United States into the northern Gulf Coast steered the system quickly westward toward the Middle Texas coast. The low strengthened into Tropical Storm Harold by the early morning hours of the 22nd. Harold i...
Flash Flood — Jul 7, 2023
A slow moving upper level disturbance interacted with deep moisture over south Texas to produce thunderstorms over the inland Coastal Bend during the early morning hours of the 7th. Thunderstorms producing locally heavy rainfall remained over the inland Coastal Bend for several hours. Rainfall amounts ranged from 4 to 8 inches from north of Alice southwest to near Benavides. This caused floodin...
Flash Flood — Aug 16, 2022
Runoff from the excessive rains over Webb and Duval Counties on the 15th caused flooding of creeks and rivers into the 16th.
Flood — Aug 16, 2022
Runoff from the excessive rains over Webb and Duval Counties on the 15th caused flooding of creeks and rivers into the 16th.
Flash Flood — Jul 8, 2021
The multi-day heavy rain event across the Coastal Bend continued on the 8th as the low pressure system remained nearly stationary. Bands of showers and thunderstorms produced heavy rainfall that caused flash flooding over much of San Patricio and Nueces mainly during the morning. Four day total rainfall amounts ranged from 10 to 15 inches from Nueces County northward to Victoria with a maximum ...
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 Duval 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 Duval 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.