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Flood in Collin County, Texas
108 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.
NCEI records 108 flood events in Collin County, Texas, between 1950 and 2026, spread over 25 years.
May is the busiest month, with 26 of the recorded events. The last 20 years account for 76 events against 32 in the 20 years before, a change that reflects reporting practice as much as weather.
The county holds 0.7% of the 15,832 flood events recorded in Texas; its 12.8 per 100 square miles compares with 6.1 statewide.
Compared with Texas
| Measure | Collin County | Texas | US |
|---|---|---|---|
| Flood events since 1950 | 108 | 15,832 | 183,559 |
| Per 100 square miles | 12.8 | 6.1 | 5.2 |
| Per 10,000 residents | 1.0 | 5.4 | 5.5 |
| Deaths recorded | 0 | 595 | 2,961 |
| Busiest month | May | May | June |
By year
Seasonality
7Feb
6Mar
8Apr
12May
26Jun
18Jul
6Aug
8Sep
3Oct
6Nov
3Dec
5
Recorded events
All 108 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 Jun 2026 | Flash Flood | — | — | — | — | — | County |
| 27 May 2026 | Flash Flood | — | — | — | — | — | County |
| 22 Sep 2025 | Flash Flood | — | $1K | — | — | — | County |
| 31 Aug 2025 | Flash Flood | — | $10K | — | — | — | County |
| 9 Jun 2025 | Flash Flood | — | $2K | — | — | — | County |
| 3 Jun 2025 | Flash Flood | — | — | — | — | — | County |
| 3 Jun 2025 | Flash Flood | — | $50K | — | — | — | County |
| 30 Apr 2025 | Flash Flood | — | — | — | — | — | County |
| 30 Apr 2025 | Flash Flood | — | — | — | — | — | County |
| 30 Apr 2025 | Flash Flood | — | — | — | — | — | County |
| 5 Apr 2025 | Flash Flood | — | — | — | — | — | County |
| 5 Jun 2024 | Flash Flood | — | $5K | — | — | — | County |
| 3 Jun 2024 | Flash Flood | — | $50K | — | — | — | County |
| 30 May 2024 | Flash Flood | — | $6K | — | — | — | County |
| 30 May 2024 | Flash Flood | — | — | — | — | — | County |
| 30 May 2024 | Flash Flood | — | — | — | — | — | County |
| 28 May 2024 | Flash Flood | — | $5K | — | — | — | County |
| 22 May 2024 | Flash Flood | — | — | — | — | — | County |
| 4 Apr 2022 | Flash Flood | — | $25K | — | — | — | County |
| 4 Apr 2022 | Flash Flood | — | $25K | — | — | — | County |
| 4 Apr 2022 | Flash Flood | — | $15K | — | — | — | County |
| 16 May 2021 | Flood | — | — | — | — | — | County |
| 18 Mar 2020 | Flash Flood | — | — | — | — | — | County |
| 23 Apr 2019 | Flash Flood | — | $10K | — | — | — | County |
| 19 Oct 2018 | Flood | — | — | — | — | — | County |
| 21 Sep 2018 | Flash Flood | — | $10K | — | — | — | County |
| 21 Sep 2018 | Flash Flood | — | — | — | — | — | County |
| 17 Aug 2017 | Flood | — | — | — | — | — | County |
| 17 Aug 2017 | Flood | — | — | — | — | — | County |
| 5 Jul 2017 | Flash Flood | — | — | — | — | — | County |
| 5 Jul 2017 | Flash Flood | — | — | — | — | — | County |
| 5 Jul 2017 | Flash Flood | — | — | — | — | — | County |
| 12 Jun 2016 | Flash Flood | — | — | — | — | — | County |
| 26 Dec 2015 | Flash Flood | — | — | — | — | — | County |
| 27 Nov 2015 | Flood | — | — | — | — | — | County |
| 21 Jun 2015 | Flash Flood | — | $1K | — | — | — | County |
| 30 May 2015 | Flash Flood | — | — | — | — | — | County |
| 29 May 2015 | Flash Flood | — | — | — | — | — | County |
| 29 May 2015 | Flash Flood | — | — | — | — | — | County |
| 29 May 2015 | Flash Flood | — | — | — | — | — | County |
| 17 May 2015 | Flood | — | — | — | — | — | County |
| 9 May 2015 | Flash Flood | — | — | — | — | — | County |
| 9 May 2015 | Flash Flood | — | — | — | — | — | County |
| 9 May 2015 | Flood | — | — | — | — | — | County |
| 31 Jul 2014 | Flash Flood | — | — | — | — | — | County |
| 20 Mar 2012 | Flood | — | — | — | — | — | County |
| 25 Jan 2012 | Flood | — | $50K | — | — | — | County |
| 20 Nov 2009 | Flood | — | $20K | — | — | — | County |
| 25 Oct 2009 | Flash Flood | — | $3K | — | — | — | County |
| 25 Oct 2009 | Flash Flood | — | $3K | — | — | — | County |
| 3 May 2009 | Flash Flood | — | — | — | — | — | County |
| 2 May 2009 | Flash Flood | — | $2K | — | — | — | County |
| 2 May 2009 | Flash Flood | — | $20K | — | — | — | County |
| 20 Aug 2008 | Flash Flood | — | $20K | — | — | — | County |
| 20 Aug 2008 | Flash Flood | — | — | — | — | — | County |
| 20 Aug 2008 | Flash Flood | — | — | — | — | — | County |
| 20 Aug 2008 | Flash Flood | — | $4K | — | — | — | County |
| 23 Apr 2008 | Flash Flood | — | $2K | — | — | — | County |
| 18 Mar 2008 | Flash Flood | — | — | — | — | — | County |
| 18 Mar 2008 | Flash Flood | — | $4K | — | — | — | County |
| 18 Mar 2008 | Flash Flood | — | — | — | — | — | County |
| 18 Mar 2008 | Flash Flood | — | — | — | — | — | County |
| 15 Oct 2007 | Flash Flood | — | $80K | — | — | — | County |
| 11 Jul 2007 | Flash Flood | — | — | — | — | — | County |
| 5 Jul 2007 | Flash Flood | — | — | — | — | — | County |
| 27 Jun 2007 | Flash Flood | — | — | — | — | — | County |
| 26 Jun 2007 | Flash Flood | — | $20K | — | — | — | County |
| 18 Jun 2007 | Flash Flood | — | $10K | — | — | — | County |
| 18 Jun 2007 | Flash Flood | — | — | — | — | — | County |
| 30 May 2007 | Flash Flood | — | $10K | — | — | — | County |
| 27 May 2007 | Flash Flood | — | — | — | — | — | County |
| 2 May 2007 | Flash Flood | — | $50K | — | — | — | County |
| 24 Apr 2007 | Flash Flood | — | — | — | — | — | County |
| 3 Apr 2007 | Flash Flood | — | — | — | — | — | County |
| 30 Mar 2007 | Flash Flood | — | — | — | — | — | County |
| 12 Jan 2007 | Flash Flood | — | — | — | — | — | County |
| 19 Mar 2006 | Flash Flood | — | — | — | — | — | County |
| 15 Aug 2005 | Flash Flood | — | — | — | — | — | County |
| 30 Dec 2002 | Flash Flood | — | — | — | — | — | County |
| 19 Oct 2002 | Flash Flood | — | $25K | — | — | — | County |
| 6 May 2001 | Flash Flood | — | — | — | — | — | County |
| 16 Feb 2001 | Flash Flood | — | — | — | — | — | County |
| 16 Feb 2001 | Flash Flood | — | — | — | — | — | County |
| 15 Jun 2000 | Flash Flood | — | — | — | — | — | County |
| 11 Jun 2000 | Flash Flood | — | — | — | — | — | County |
| 4 Jun 2000 | Flash Flood | — | — | — | — | — | County |
| 8 Jun 1999 | Flash Flood | — | — | — | — | — | County |
| 17 May 1999 | Flash Flood | — | — | — | — | — | County |
| 4 Dec 1998 | Flash Flood | — | — | — | — | — | County |
| 4 Dec 1998 | Flash Flood | — | — | — | — | — | County |
| 4 Jan 1998 | Flash Flood | — | — | — | — | — | County |
| 4 Jan 1998 | Flash Flood | — | — | — | — | — | County |
| 4 Jan 1998 | Flash Flood | — | — | — | — | — | County |
| 4 Jan 1998 | Flash Flood | — | — | — | — | — | County |
| 4 Jan 1998 | Flash Flood | — | — | — | — | — | County |
| 20 Dec 1997 | Flash Flood | — | — | — | — | — | County |
| 9 Jun 1997 | Flash Flood | — | — | — | — | — | County |
| 9 Jun 1997 | Flash Flood | — | — | — | — | — | County |
| 19 May 1997 | Flash Flood | — | — | — | — | — | County |
| 19 May 1997 | Flash Flood | — | $10K | — | — | — | County |
| 19 May 1997 | Flash Flood | — | — | — | — | — | County |
| 4 Apr 1997 | Flash Flood | — | — | — | — | — | County |
| 19 Feb 1997 | Flash Flood | — | — | — | — | — | County |
| 19 Feb 1997 | Flash Flood | — | — | — | — | — | County |
| 19 Feb 1997 | Flash Flood | — | — | — | — | — | County |
| 19 Feb 1997 | Flash Flood | — | — | — | — | — | County |
| 7 Nov 1996 | Flash Flood | — | $10K | — | — | — | County |
| 27 Oct 1996 | Flash Flood | — | — | — | — | — | County |
Questions and answers
How many flood events has Collin County had?
108 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 Collin County?
19 Jun 2026 (Flash Flood). Records reach NCEI about 120 days after the month ends.
What was the most damaging flood event recorded in Collin County?
The flash flood of 15 Oct 2007, with property damage estimated by NCEI at $80K.
How does Collin County compare with Texas for flood?
12.8 events per 100 square miles against 6.1 statewide; the county holds 108 of the state's 15,832 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.