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Flood in Franklin County, Illinois
125 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.
Franklin County, Illinois, has 125 flood events in the NCEI record since 1950, with at least one in 29 different years.
March is the busiest month, with 22 of the recorded events. The last 20 years account for 83 events against 42 in the 20 years before, a change that reflects reporting practice as much as weather.
The county holds 1.9% of the 6,507 flood events recorded in Illinois; its 30.6 per 100 square miles compares with 11.7 statewide.
Compared with Illinois
| Measure | Franklin County | Illinois | US |
|---|---|---|---|
| Flood events since 1950 | 125 | 6,507 | 183,559 |
| Per 100 square miles | 30.6 | 11.7 | 5.2 |
| Per 10,000 residents | 33.4 | 5.1 | 5.5 |
| Deaths recorded | 0 | 61 | 2,961 |
| Busiest month | March | June | June |
By year
Seasonality
10Feb
11Mar
22Apr
21May
21Jun
14Jul
8Aug
7Sep
2Oct
1Nov
2Dec
6
Recorded events
All 125 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 |
|---|---|---|---|---|---|---|---|
| 19 Jul 2025 | Flash Flood | — | $10K | — | — | — | County |
| 19 Jul 2025 | Flash Flood | — | $10K | — | — | — | County |
| 17 Jul 2025 | Flood | — | — | — | — | — | County |
| 18 Feb 2025 | Flood | — | — | — | — | — | County |
| 23 Sep 2024 | Flash Flood | — | — | — | — | — | County |
| 16 Jul 2024 | Flood | — | — | — | — | — | County |
| 8 May 2024 | Flash Flood | — | — | — | — | — | County |
| 25 Mar 2023 | Flood | — | — | — | — | — | County |
| 24 Mar 2023 | Flash Flood | — | — | — | — | — | County |
| 4 Mar 2023 | Flood | — | — | — | — | — | County |
| 3 Mar 2023 | Flood | — | — | — | — | — | County |
| 8 Feb 2023 | Flood | — | — | — | — | — | County |
| 18 Jan 2023 | Flood | — | — | — | — | — | County |
| 5 Aug 2022 | Flash Flood | — | — | — | — | — | County |
| 20 Feb 2022 | Flood | — | — | — | — | — | County |
| 16 Jul 2021 | Flash Flood | — | — | — | — | — | County |
| 3 Jun 2021 | Flash Flood | — | — | — | — | — | County |
| 18 Mar 2021 | Flood | — | — | — | — | — | County |
| 11 Mar 2021 | Flood | — | — | — | — | — | County |
| 13 Aug 2020 | Flash Flood | — | — | — | — | — | County |
| 30 Jun 2020 | Flash Flood | — | — | — | — | — | County |
| 25 May 2020 | Flood | — | — | — | — | — | County |
| 21 Mar 2020 | Flood | — | — | — | — | — | County |
| 12 Mar 2020 | Flash Flood | — | — | — | — | — | County |
| 12 Jan 2020 | Flood | — | — | — | — | — | County |
| 21 May 2019 | Flood | — | — | — | — | — | County |
| 1 May 2019 | Flood | — | — | — | — | — | County |
| 27 Apr 2019 | Flood | — | — | — | — | — | County |
| 25 Apr 2019 | Flood | — | — | — | — | — | County |
| 8 Feb 2019 | Flood | — | — | — | — | — | County |
| 15 Dec 2018 | Flash Flood | — | — | — | — | — | County |
| 1 Apr 2018 | Flood | — | — | — | — | — | County |
| 29 Mar 2018 | Flood | — | — | — | — | — | County |
| 1 Mar 2018 | Flood | — | — | — | — | — | County |
| 25 Feb 2018 | Flood | — | — | — | — | — | County |
| 24 Feb 2018 | Flash Flood | — | — | — | — | — | County |
| 2 Nov 2017 | Flash Flood | — | $5K | — | — | — | County |
| 6 Jul 2017 | Flood | — | — | — | — | — | County |
| 23 Jun 2017 | Flood | — | $40K | — | — | — | County |
| 1 May 2017 | Flood | — | $70K | — | — | — | County |
| 30 Apr 2017 | Flash Flood | — | — | — | — | — | County |
| 29 Apr 2017 | Flood | — | — | — | — | — | County |
| 29 Apr 2017 | Flood | — | $40K | — | — | — | County |
| 17 Aug 2016 | Flood | — | — | — | — | — | County |
| 14 Aug 2016 | Flash Flood | — | $5K | — | — | — | County |
| 3 Aug 2016 | Flood | — | — | — | — | — | County |
| 11 May 2016 | Flash Flood | — | — | — | — | — | County |
| 1 Jan 2016 | Flood | — | — | — | — | — | County |
| 29 Dec 2015 | Flood | — | — | — | — | — | County |
| 20 Jun 2015 | Flood | — | — | — | — | — | County |
| 14 Mar 2015 | Flood | — | — | — | — | — | County |
| 4 Apr 2014 | Flood | — | — | — | — | — | County |
| 3 Apr 2014 | Flash Flood | — | — | — | — | — | County |
| 24 Dec 2013 | Flood | — | — | — | — | — | County |
| 3 Jun 2013 | Flood | — | — | $10K | — | — | County |
| 19 Mar 2013 | Flood | — | — | — | — | — | County |
| 12 Jan 2013 | Flash Flood | — | — | — | — | — | County |
| 1 Dec 2011 | Flood | — | $1K | — | — | — | County |
| 30 Nov 2011 | Flood | — | — | — | — | — | County |
| 1 Jul 2011 | Flood | — | — | — | — | — | County |
| 26 Jun 2011 | Flood | — | — | — | — | — | County |
| 1 May 2011 | Flood | — | $30K | — | — | — | County |
| 1 May 2011 | Flood | — | $500K | — | — | 1 | County |
| 25 Apr 2011 | Flash Flood | — | — | — | — | — | County |
| 24 Apr 2011 | Flood | — | — | — | — | — | County |
| 24 Apr 2011 | Flood | — | — | — | — | — | County |
| 23 Apr 2011 | Flash Flood | — | — | — | — | — | County |
| 16 Mar 2011 | Flood | — | — | — | — | — | County |
| 21 Mar 2010 | Flood | — | — | — | — | — | County |
| 1 Jan 2010 | Flood | — | — | — | — | — | County |
| 26 Dec 2009 | Flood | — | — | — | — | — | County |
| 8 May 2009 | Flood | — | — | — | — | — | County |
| 8 May 2009 | Flash Flood | — | $10K | — | — | — | County |
| 18 May 2008 | Flood | — | — | — | — | — | County |
| 10 Apr 2008 | Flood | — | — | — | — | — | County |
| 1 Apr 2008 | Flood | — | — | — | — | — | County |
| 19 Mar 2008 | Flood | — | — | — | — | — | County |
| 18 Mar 2008 | Flood | — | $1.5M | — | — | — | County |
| 8 Feb 2008 | Flood | — | — | — | — | — | County |
| 10 May 2007 | Flash Flood | — | — | — | — | — | County |
| 1 Mar 2007 | Flood | — | — | — | — | — | County |
| 27 Feb 2007 | Flood | — | — | — | — | — | County |
| 15 Jan 2007 | Flood | — | — | — | — | — | County |
| 12 Mar 2006 | Flash Flood | — | — | — | — | — | County |
| 10 Mar 2006 | Flood | — | — | — | — | — | County |
| 9 Mar 2006 | Flash Flood | — | — | — | — | — | County |
| 7 Jan 2005 | Flood | — | — | — | — | — | Forecast zone |
| 18 Oct 2004 | Flash Flood | — | — | $10K | — | — | County |
| 28 Aug 2004 | Flash Flood | — | — | — | — | — | County |
| 1 Jun 2004 | Flood | — | — | — | — | — | Forecast zone |
| 28 May 2004 | Flood | — | — | — | — | — | Forecast zone |
| 26 May 2004 | Flash Flood | — | — | — | — | — | County |
| 25 May 2004 | Flash Flood | — | — | — | — | — | County |
| 12 Jun 2003 | Flood | — | — | — | — | — | Forecast zone |
| 6 May 2003 | Flash Flood | — | — | — | — | — | County |
| 5 May 2003 | Flood | — | — | — | — | — | Forecast zone |
| 22 Feb 2003 | Flood | — | — | — | — | — | Forecast zone |
| 27 Jun 2002 | Flash Flood | — | $75K | — | — | — | County |
| 1 May 2002 | Flood | — | $3K | — | — | — | Forecast zone |
| 14 Apr 2002 | Flood | — | — | — | — | — | Forecast zone |
| 1 Apr 2002 | Flood | — | — | — | — | — | Forecast zone |
| 10 Mar 2002 | Flood | — | — | — | — | — | Forecast zone |
| 2 Feb 2002 | Flood | — | — | — | — | — | Forecast zone |
| 17 Dec 2001 | Flood | — | — | — | — | — | Forecast zone |
| 18 Sep 2001 | Flood | — | — | — | — | — | County |
| 17 Jun 2000 | Flood | — | — | — | — | — | Forecast zone |
| 16 Jun 2000 | Flash Flood | — | — | — | — | — | County |
| 4 Apr 1999 | Flood | — | — | — | — | — | Forecast zone |
| 1 Feb 1999 | Flood | — | $3K | — | — | — | Forecast zone |
| 21 Jan 1999 | Flood | — | — | — | — | — | Forecast zone |
| 21 Jan 1999 | Flash Flood | — | $100K | — | — | — | County |
| 29 Jun 1998 | Flash Flood | — | $100K | — | — | — | County |
| 15 Apr 1998 | Flash Flood | — | $10K | — | — | — | County |
| 1 Apr 1998 | Flood | — | — | — | — | — | Forecast zone |
| 6 Jun 1997 | Flash Flood | — | — | — | — | — | County |
| 1 Mar 1997 | Flood | — | — | — | — | — | Forecast zone |
| 21 Jan 1997 | Flood | — | — | — | — | — | Forecast zone |
| 26 Aug 1996 | Flood | — | — | — | — | — | County |
| 19 Jul 1996 | Flood | — | — | — | — | — | County |
| 1 Jun 1996 | Flood | — | — | — | — | — | Forecast zone |
| 10 May 1996 | Flash Flood | — | $8.0M | — | — | — | County |
| 5 May 1996 | Flash Flood | — | — | — | — | — | County |
| 1 May 1996 | Flood | — | — | — | — | — | Forecast zone |
| 28 Apr 1996 | Flash Flood | — | $3.0M | $50K | — | — | County |
| 22 Apr 1996 | Flood | — | $5K | — | — | — | Forecast zone |
Questions and answers
How many flood events has Franklin County had?
125 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 Franklin County?
19 Jul 2025 (Flash Flood). Records reach NCEI about 120 days after the month ends.
What was the most damaging flood event recorded in Franklin County?
The flash flood of 10 May 1996, with property damage estimated by NCEI at $8.0M.
How does Franklin County compare with Illinois for flood?
30.6 events per 100 square miles against 11.7 statewide; the county holds 125 of the state's 6,507 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.