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Flood in Johnson County, Indiana
60 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.
Johnson County, Indiana, has 60 flood events in the NCEI record since 1950, with at least one in 20 different years.
June is the busiest month, with 14 of the recorded events. The last 20 years account for 29 events against 31 in the 20 years before, a change that reflects reporting practice as much as weather.
The county holds 1% of the 6,083 flood events recorded in Indiana; its 18.7 per 100 square miles compares with 17.0 statewide.
Compared with Indiana
| Measure | Johnson County | Indiana | US |
|---|---|---|---|
| Flood events since 1950 | 60 | 6,083 | 183,559 |
| Per 100 square miles | 18.7 | 17.0 | 5.2 |
| Per 10,000 residents | 3.7 | 8.9 | 5.5 |
| Deaths recorded | 0 | 83 | 2,961 |
| Busiest month | June | June | June |
By year
Seasonality
8Feb
5Mar
7Apr
3May
9Jun
14Jul
6Aug
1Sep
3Oct
2Nov
1Dec
1
Recorded events
All 60 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 |
|---|---|---|---|---|---|---|---|
| 3 Mar 2026 | Flood | — | $25K | — | — | — | County |
| 4 Apr 2025 | Flash Flood | — | $25K | — | — | — | County |
| 7 Feb 2019 | Flash Flood | — | $20K | — | — | — | County |
| 7 Feb 2019 | Flash Flood | — | $40K | — | — | — | County |
| 11 Jul 2017 | Flood | — | $1K | — | — | — | County |
| 11 Jul 2017 | Flood | — | $500 | $500 | — | — | County |
| 17 Jul 2015 | Flash Flood | — | $50K | — | — | — | County |
| 26 Jun 2015 | Flood | — | $1K | — | — | — | County |
| 22 Dec 2013 | Flash Flood | — | $10K | — | — | — | County |
| 19 Sep 2013 | Flood | — | $500 | — | — | — | County |
| 30 Mar 2012 | Flood | — | $500 | — | — | — | County |
| 30 Mar 2012 | Flood | — | $500 | — | — | — | County |
| 23 Mar 2012 | Flood | — | $750 | — | — | — | County |
| 20 Jun 2011 | Flood | — | $1K | $1K | — | — | County |
| 12 Jun 2010 | Flood | — | $500 | — | — | — | County |
| 27 May 2010 | Flash Flood | — | $1K | $100 | — | — | County |
| 27 May 2010 | Flash Flood | — | $2K | $100 | — | — | County |
| 12 Jul 2008 | Flash Flood | — | $3K | — | — | — | County |
| 13 Jun 2008 | Flash Flood | — | $5K | $5K | — | — | County |
| 9 Jun 2008 | Flash Flood | — | $5K | $5K | — | — | County |
| 7 Jun 2008 | Flash Flood | — | $50K | $50K | — | — | County |
| 7 Jun 2008 | Flash Flood | — | $90M | $90M | — | — | County |
| 19 Mar 2008 | Flood | — | $5K | — | — | — | County |
| 18 Mar 2008 | Flood | — | $20K | — | — | — | County |
| 4 Mar 2008 | Flood | — | — | — | — | — | County |
| 6 Feb 2008 | Flood | — | $5K | — | — | — | County |
| 6 Feb 2008 | Flood | — | $5K | — | — | — | County |
| 9 Jan 2008 | Flood | — | $5K | — | — | — | County |
| 8 Jan 2008 | Flood | — | $5K | — | — | — | County |
| 3 Jan 2005 | Flood | — | — | — | — | — | Forecast zone |
| 16 Jun 2004 | Flash Flood | — | — | — | — | — | County |
| 16 Jun 2004 | Flood | — | — | — | — | — | Forecast zone |
| 13 Jun 2004 | Flood | — | — | — | — | — | Forecast zone |
| 30 May 2004 | Flash Flood | — | — | — | — | — | County |
| 4 Jan 2004 | Flood | — | — | — | — | — | Forecast zone |
| 4 Jan 2004 | Flood | — | — | — | — | — | Forecast zone |
| 1 Sep 2003 | Flood | — | — | — | — | — | Forecast zone |
| 1 Sep 2003 | Flood | — | — | — | — | — | Forecast zone |
| 7 Jul 2003 | Flood | — | — | — | — | — | Forecast zone |
| 10 May 2003 | Flood | — | — | — | — | — | Forecast zone |
| 12 May 2002 | Flash Flood | — | $50K | — | — | — | County |
| 7 May 2002 | Flash Flood | — | $25K | — | — | — | County |
| 29 Nov 2001 | Flood | — | — | — | — | — | Forecast zone |
| 18 Aug 2001 | Flood | — | — | — | — | — | County |
| 5 Oct 2000 | Flood | — | — | — | — | — | Forecast zone |
| 5 Oct 2000 | Flash Flood | — | — | — | — | — | County |
| 8 Apr 2000 | Flood | — | — | — | — | — | Forecast zone |
| 12 Jun 1999 | Flood | — | — | — | — | — | County |
| 7 Feb 1999 | Flood | — | — | — | — | — | Forecast zone |
| 22 Jan 1999 | Flood | — | $17K | — | — | — | Forecast zone |
| 22 Jan 1999 | Flood | — | $20K | — | — | — | Forecast zone |
| 22 Jan 1999 | Flood | — | $1.7M | — | — | — | Forecast zone |
| 20 Jul 1998 | Flood | — | — | — | — | — | County |
| 22 Jun 1998 | Flood | — | — | — | — | — | County |
| 14 Jun 1998 | Flash Flood | — | — | — | — | — | County |
| 12 Jun 1998 | Flood | — | — | — | — | — | Forecast zone |
| 9 Apr 1998 | Flood | — | — | — | — | — | Forecast zone |
| 31 May 1997 | Flood | — | — | — | — | — | Forecast zone |
| 4 May 1996 | Flood | — | — | — | — | — | Forecast zone |
| 4 May 1996 | Flood | — | — | — | — | — | Forecast zone |
Questions and answers
How many flood events has Johnson County had?
60 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 Johnson County?
3 Mar 2026 (Flood). Records reach NCEI about 120 days after the month ends.
What was the most damaging flood event recorded in Johnson County?
The flash flood of 7 Jun 2008, with property damage estimated by NCEI at $90M and crop damage at $90M.
How does Johnson County compare with Indiana for flood?
18.7 events per 100 square miles against 17.0 statewide; the county holds 60 of the state's 6,083 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.