Enter any address in Williams County, Ohio to see its FEMA flood zone
2 NOAA storm reports from this county describe what happened, in the words of the meteorologists who were there.
Williams County, Ohio has recorded 6 flood-related events since 1996 according to NOAA's Storm Events Database, including 4 flash floods and 2 river or area floods. The county has received 8 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 (1978–2020)
Source: OpenFEMA Disaster Declarations Summaries.
| Declaration | Type | Date |
|---|---|---|
| Covid-19 | Biological | Jan 20, 2020 |
| Covid-19 Pandemic | Biological | Jan 20, 2020 |
| Severe Storms | Severe Storm | Jun 29, 2012 |
| Hurricane Katrina Evacuation | Hurricane | Aug 29, 2005 |
| Severe Storms And Flooding | Severe Storm | Aug 27, 2004 |
| Flooding | Flood | May 2, 1996 |
| Severe Storms & Flooding | Flood | Mar 12, 1982 |
| Blizzards & Snowstorms | Snowstorm | Jan 26, 1978 |
NOAA Storm Events Database (1996–2025)
Source: NOAA National Weather Service Storm Events Database.
| Type | Date | Damage |
|---|---|---|
| Flood | Jun 27, 2015 | 0.00K |
| Flash Flood | May 21, 2010 | 0.00K |
| Flash Flood | Jun 19, 2009 | 0.00K |
| Flood | Aug 25, 1998 | — |
| Flash Flood | Jul 21, 1997 | — |
| Flash Flood | May 17, 1996 | 3M |
Flood — Jun 27, 2015
Thunderstorms produced torrential rainfall in portions of northwestern Ohio. A combination of upstream rainfall in Fort Wayne, Indiana and rainfall across Putnam county set the stage for flash flooding in the town of Payne, forcing evacuation of parts of the town as several inches of rain fell both upstream in Indiana and over the area. A similar scenario took place in Deshler (Henry county) wh...
Flash Flood — May 21, 2010
An upper level impulse, abundant moisture and a south-southwesterly flow combined to allow for the development of thunderstorms. While several produced small hail and locally gusty winds, the main effect was torrential rainfall, on the order of 1 to 3 inches per hour. This resulted in flash flooding in several locations across western Defiance County.
Flash Flood — Jun 19, 2009
A fast moving line of storms moved out of northern Indiana and into northwestern Ohio. While the storms had weakened prior to their arrival in Ohio, training of a few of the storms caused areas of flooding and flash flooding across portions of southern Williams county and northern Defiance county.
Flood — Aug 25, 1998
Synoptic and mesoscale conditions for August 23-25th...Impressive surface based instability developed late the night of the 23th ahead of a weak surface trough axis from southern lake Michigan back into western Ilinois where mid 70 dewpoints had pooled. Surface based CAPES were on the order of 3000 J/kg with lifted indicies to -10. At the same time a potent upper level trough was rotating thr...
Flash Flood — May 17, 1996
Up to ten inches of rain fell across Williams County in a 6 hour period producing serious flooding in many communities in Williams County. The hardest hit communities were Bryan, Ohio and Antwerp, Ohio. Flooding in the county was described as the worst in 70 years. In Antwerp 22 homes were damaged with 11 beyond repair. In Bryan, Ohio water as deep as 8 foot was reported in places with many hom...
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 Williams County, Ohio:
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 Williams County, Ohio 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.