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Flood in Clinton County, Ohio
74 floods and flash floods events in the NCEI Storm Events record, 1950 to 2026. Event types counted: Flood, Flash Flood, Coastal Flood, Lakeshore Flood.
NCEI notes that Storm Data is compiled from a variety of sources including the National Weather Service, other federal, state and local agencies, the media and the public; that property and crop damage figures are estimates; and that some events are recorded by NWS forecast zone rather than by county. FEMA notes that NFIP claim records are redacted and aggregated to protect the privacy of policyholders. Storm records through 30 Jun 2026.
Clinton County, Ohio, has 74 flood events in the NCEI record since 1950, with at least one in 22 different years.
June is the busiest month, with 28 of the recorded events. The last 20 years account for 44 events against 30 in the 20 years before, a change that reflects reporting practice as much as weather.
The county holds 1.1% of the 6,794 flood events recorded in Ohio; its 18.1 per 100 square miles compares with 16.6 statewide.
NCEI attributes 1 death in the county to floods and flash floods.
Compared with Ohio
| Measure | Clinton County | Ohio | US |
|---|---|---|---|
| Flood events since 1950 | 74 | 6,794 | 183,559 |
| Per 100 square miles | 18.1 | 16.6 | 5.2 |
| Per 10,000 residents | 17.6 | 5.8 | 5.5 |
| Deaths recorded | 1 | 74 | 2,961 |
| Busiest month | June | June | June |
By year
Seasonality
5Feb
3Mar
8Apr
4May
8Jun
28Jul
10Aug
4Sep
2Oct
0Nov
1Dec
1
Recorded events
All 74 events, most recent first. Magnitude is hail size, tornado rating or wind speed as recorded.
| Date | Event type | Magnitude | Property damage | Crop damage | Deaths | Injuries | Geography |
|---|---|---|---|---|---|---|---|
| 11 Mar 2026 | Flood | — | — | — | — | — | County |
| 5 Mar 2026 | Flood | — | — | — | — | — | County |
| 5 Mar 2026 | Flood | — | — | — | — | — | County |
| 14 Jul 2025 | Flood | — | — | — | — | — | County |
| 14 Jul 2025 | Flood | — | — | — | — | — | County |
| 28 Jun 2025 | Flash Flood | — | — | — | — | — | County |
| 28 Jun 2025 | Flood | — | — | — | — | — | County |
| 28 Jun 2025 | Flood | — | — | — | — | — | County |
| 28 Jun 2025 | Flash Flood | — | — | — | — | — | County |
| 26 Jun 2025 | Flood | — | — | — | — | — | County |
| 26 Jun 2025 | Flood | — | — | — | — | — | County |
| 16 Feb 2025 | Flood | — | — | — | — | — | County |
| 5 Sep 2022 | Flood | — | — | — | — | — | County |
| 6 May 2022 | Flood | — | — | — | — | — | County |
| 6 May 2022 | Flood | — | — | — | — | — | County |
| 6 May 2022 | Flash Flood | — | $20K | — | — | — | County |
| 18 Feb 2022 | Flood | — | — | — | — | — | County |
| 29 Jul 2021 | Flood | — | — | — | — | — | County |
| 18 Jun 2021 | Flash Flood | — | — | — | — | — | County |
| 27 Jun 2019 | Flash Flood | — | — | — | — | — | County |
| 27 Jun 2019 | Flood | — | — | — | — | — | County |
| 27 Jun 2019 | Flood | — | — | — | — | — | County |
| 27 Jun 2019 | Flood | — | — | — | — | — | County |
| 27 Jun 2019 | Flood | — | — | — | — | — | County |
| 27 Jun 2019 | Flood | — | — | — | — | — | County |
| 19 Jun 2019 | Flood | — | — | — | — | — | County |
| 20 Apr 2019 | Flood | — | — | — | — | — | County |
| 19 Jun 2018 | Flood | — | — | — | — | — | County |
| 19 Jun 2018 | Flood | — | — | — | — | — | County |
| 19 Jun 2018 | Flood | — | — | — | — | — | County |
| 23 Jun 2017 | Flash Flood | — | — | — | — | — | County |
| 23 Jun 2017 | Flash Flood | — | — | — | — | — | County |
| 29 Apr 2017 | Flash Flood | — | — | — | — | — | County |
| 1 Mar 2017 | Flash Flood | — | — | — | — | — | County |
| 29 Jul 2016 | Flash Flood | — | — | — | — | — | County |
| 18 Jul 2015 | Flash Flood | — | — | — | — | — | County |
| 26 Jun 2015 | Flash Flood | — | — | — | — | — | County |
| 22 Dec 2013 | Flood | — | — | — | — | — | County |
| 10 Jul 2013 | Flash Flood | — | $1K | — | — | — | County |
| 10 Jul 2013 | Flash Flood | — | $1K | — | — | — | County |
| 27 Jun 2010 | Flash Flood | — | $2K | $1K | — | — | County |
| 3 Jun 2008 | Flash Flood | — | $1K | — | — | — | County |
| 19 Mar 2008 | Flood | — | $10K | — | 1 | — | County |
| 18 Mar 2008 | Flood | — | $3K | — | — | — | County |
| 3 Aug 2006 | Flash Flood | — | $2K | — | — | — | County |
| 3 Aug 2006 | Flood | — | $2K | — | — | — | County |
| 12 Mar 2006 | Flood | — | — | — | — | — | County |
| 30 Jun 2005 | Flood | — | — | — | — | — | Forecast zone |
| 28 Mar 2005 | Flood | — | — | — | — | — | Forecast zone |
| 11 Jan 2005 | Flood | — | $10K | — | — | — | Forecast zone |
| 5 Jan 2005 | Flood | — | $10K | — | — | — | Forecast zone |
| 5 Jan 2005 | Flood | — | $20K | — | — | — | Forecast zone |
| 27 May 2004 | Flood | — | — | — | — | — | Forecast zone |
| 4 Jan 2004 | Flood | — | — | — | — | — | Forecast zone |
| 2 Sep 2003 | Flood | — | — | — | — | — | Forecast zone |
| 17 Jun 2003 | Flood | — | — | — | — | — | Forecast zone |
| 10 May 2003 | Flood | — | — | — | — | — | Forecast zone |
| 10 Nov 2002 | Flood | — | — | — | — | — | Forecast zone |
| 18 Aug 2002 | Flood | — | — | — | — | — | Forecast zone |
| 27 Jul 2002 | Flash Flood | — | $3K | — | — | — | County |
| 27 Jul 2002 | Flood | — | $2K | — | — | — | Forecast zone |
| 6 Jun 2002 | Flood | — | — | — | — | — | Forecast zone |
| 5 Jun 2002 | Flood | — | — | — | — | — | Forecast zone |
| 29 May 2002 | Flood | — | — | — | — | — | Forecast zone |
| 7 May 2002 | Flood | — | — | — | — | — | Forecast zone |
| 6 Jun 2001 | Flash Flood | — | $3K | — | — | — | County |
| 6 Jun 2001 | Flash Flood | — | $3K | — | — | — | County |
| 18 May 2001 | Flash Flood | — | $10K | — | — | — | County |
| 3 Jul 2000 | Flash Flood | — | $5K | — | — | — | County |
| 13 Feb 2000 | Flash Flood | — | $5K | — | — | — | County |
| 3 Jan 2000 | Flash Flood | — | $10K | — | — | — | County |
| 16 Apr 1998 | Flash Flood | — | — | — | — | — | County |
| 17 Aug 1997 | Flash Flood | — | $5K | — | — | — | County |
| 29 Apr 1996 | Flash Flood | — | $2K | — | — | — | County |
Questions and answers
How many flood events has Clinton County had?
74 events in the NCEI Storm Events record between 1950 and 2026. Reporting of floods and flash floods became far more complete after 1996, so early decades undercount.
When was the last recorded flood event in Clinton County?
11 Mar 2026 (Flood). Records reach NCEI about 120 days after the month ends.
What was the most damaging flood event recorded in Clinton County?
The flood of 5 Jan 2005, with property damage estimated by NCEI at $20K.
How does Clinton County compare with Ohio for flood?
18.1 events per 100 square miles against 16.6 statewide; the county holds 74 of the state's 6,794 recorded events.
Provenance
NOAA NCEI Storm Events Database, yearly details files through 30 Jun 2026, public domain. County-recorded events plus zone-recorded events whose forecast zone is named for the county (marked "Forecast zone"). Population and area from the US Census Bureau (2021). Built 1 Oct 2026. See the methodology, the Flood hub and the county page.