Enter any address in Clinton County, Ohio to see its FEMA flood zone
Flash flooding from thunderstorms is the dominant flood character in Clinton County, OH. Between 1996 and 2023, NOAA Storm Events data recorded 44 flood events and 27 flash flood events, resulting in one reported death. Recent events include localized flooding from heavy rainfall associated with slow-moving cold fronts, as seen on July 14, 2025, and flooding from scattered thunderstorms in hot, humid air masses, such as those on June 26, 2025.
National Flood Insurance Program (NFIP) claims data from Clinton County shows a mix of flood zones. Zone A, typically considered high-risk, had 8 claims with an average payout of $6,971 and an average water depth of 25.1 feet. Zone X, generally considered moderate to low risk, had 5 claims with a higher average payout of $12,542 and an average water depth of -0.2 feet. One claim was filed in an unknown zone.
Homeowners in Zone A, as well as those with properties located near rivers or in areas prone to flash flooding, should pay the most attention to flood risk.
Summary generated from NOAA storm narratives and NFIP claim data for this county. Not predictive.
1 NOAA storm reports from this county describe what happened, in the words of the meteorologists who were there.
Clinton County, Ohio has recorded 71 flood-related events since 1996 according to NOAA's Storm Events Database, including 27 flash floods and 44 river or area floods. The county has received 10 federal disaster declarations, 1 of which involved flooding or coastal storms. Enter any address above to check its FEMA flood zone designation.
FEMA Disaster Declarations (1968–2020)
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 |
| Severe Wind Storm Associated With Tropical Depression Ike | Severe Storm | Sep 14, 2008 |
| Record Snow And Near Record Snow | Snowstorm | Mar 7, 2008 |
| Hurricane Katrina Evacuation | Hurricane | Aug 29, 2005 |
| Severe Storms And Flooding | Severe Storm | Aug 27, 2004 |
| Blizzards & Snowstorms | Snowstorm | Jan 26, 1978 |
| Snowstorms | Snowstorm | Feb 2, 1977 |
| Heavy Rains & Flooding | Flood | Jun 5, 1968 |
NOAA Storm Events Database (1996–2025)
Source: NOAA National Weather Service Storm Events Database.
| Type | Date | Damage |
|---|---|---|
| Flash Flood | Jun 28, 2025 | 0.00K |
| Flood | Jun 28, 2025 | 0.00K |
| Flood | Jun 26, 2025 | 0.00K |
| Flood | Feb 16, 2025 | 0.00K |
| Flood | Jul 14, 2025 | 0.00K |
| Flood | Feb 18, 2022 | 0.00K |
| Flash Flood | May 6, 2022 | 20.00K |
| Flood | May 6, 2022 | 0.00K |
| Flood | Sep 5, 2022 | 0.00K |
| Flood | Jul 29, 2021 | 0.00K |
Flash Flood — Jun 28, 2025
Showers and thunderstorms developed along a frontal boundary that was moving south into the Ohio Valley.
Flood — Jun 28, 2025
Showers and thunderstorms developed along a frontal boundary that was moving south into the Ohio Valley.
Flood — Jun 26, 2025
Scattered thunderstorms developed during the afternoon and evening hours in a hot and humid airmass that was in place across the Ohio Valley.
Flood — Feb 16, 2025
A low pressure system brought heavy rainfall to the region as it moved through the Ohio Valley.
Flood — Jul 14, 2025
A low pressure system moved through the Great Lakes region, dragging a slow moving cold front through the Ohio Valley. Showers and storms developed out ahead of this frontal boundary, with some storms producing heavy rainfall and localized flooding.
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 Clinton 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 Clinton 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.