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Flood in Collier County, Florida
40 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.
Collier County, Florida, has 40 flood events in the NCEI record since 1950, with at least one in 15 different years.
August is the busiest month, with 10 of the recorded events. The last 20 years account for 32 events against 8 in the 20 years before, a change that reflects reporting practice as much as weather.
The county holds 1.2% of the 3,375 flood events recorded in Florida; its 2.0 per 100 square miles compares with 6.3 statewide.
Compared with Florida
| Measure | Collier County | Florida | US |
|---|---|---|---|
| Flood events since 1950 | 40 | 3,375 | 183,559 |
| Per 100 square miles | 2.0 | 6.3 | 5.2 |
| Per 10,000 residents | 1.0 | 1.5 | 5.5 |
| Deaths recorded | 0 | 22 | 2,961 |
| Busiest month | August | September | June |
By year
Seasonality
1Feb
0Mar
0Apr
0May
3Jun
9Jul
6Aug
10Sep
10Oct
1Nov
0Dec
0
Recorded events
All 40 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 |
|---|---|---|---|---|---|---|---|
| 9 Sep 2025 | Flood | — | — | — | — | — | County |
| 9 Sep 2025 | Flood | — | — | — | — | — | County |
| 16 Aug 2024 | Flood | — | — | — | — | — | County |
| 16 Aug 2024 | Flood | — | — | — | — | — | County |
| 16 Aug 2024 | Flood | — | — | — | — | — | County |
| 4 Aug 2024 | Flash Flood | — | — | — | — | — | County |
| 30 Jun 2024 | Flood | — | — | — | — | — | County |
| 12 Jun 2024 | Flash Flood | — | $25K | — | — | — | County |
| 11 Jun 2024 | Flood | — | — | — | — | — | County |
| 11 Jun 2024 | Flood | — | — | — | — | — | County |
| 16 May 2024 | Flood | — | — | — | — | — | County |
| 25 Aug 2022 | Flood | — | — | — | — | — | County |
| 6 Jul 2022 | Flood | — | — | — | — | — | County |
| 4 Jun 2022 | Flash Flood | — | $20K | — | — | — | County |
| 13 Sep 2021 | Flood | — | — | — | — | — | County |
| 13 Sep 2020 | Flash Flood | — | $20K | — | — | — | County |
| 9 Sep 2020 | Flood | — | — | — | — | — | County |
| 19 Jul 2020 | Flood | — | — | — | — | — | County |
| 13 Jun 2020 | Flash Flood | — | — | — | — | — | County |
| 2 Jun 2020 | Flood | — | — | — | — | — | County |
| 18 May 2020 | Flood | — | — | — | — | — | County |
| 29 Sep 2017 | Flood | — | $10K | — | — | — | County |
| 27 Aug 2017 | Flood | — | — | — | — | — | County |
| 26 Aug 2017 | Flood | — | — | — | — | — | County |
| 25 Aug 2017 | Flood | — | — | — | — | — | County |
| 16 Jul 2017 | Flood | — | — | — | — | — | County |
| 6 Jun 2017 | Flood | — | $30K | — | — | — | County |
| 6 Jun 2017 | Flood | — | — | — | — | — | County |
| 4 Oct 2016 | Flood | — | $500 | — | — | — | County |
| 28 Jan 2016 | Flood | — | $3K | — | — | — | County |
| 4 Aug 2014 | Flash Flood | — | $40K | — | — | — | County |
| 16 Jul 2008 | Flash Flood | — | $10K | — | — | — | County |
| 30 Aug 2006 | Flash Flood | — | — | — | — | — | County |
| 29 Sep 2003 | Flash Flood | — | $100K | — | — | — | County |
| 23 Jul 2001 | Flash Flood | — | $150K | — | — | — | County |
| 11 Sep 2000 | Flood | — | — | — | — | — | County |
| 7 Sep 2000 | Flood | — | — | — | — | — | County |
| 4 Jul 2000 | Flash Flood | — | — | — | — | — | County |
| 20 Sep 1999 | Flash Flood | — | $200K | — | — | — | County |
| 28 May 1998 | Flood | — | — | — | — | — | County |
Questions and answers
How many flood events has Collier County had?
40 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 Collier County?
9 Sep 2025 (Flood). Records reach NCEI about 120 days after the month ends.
What was the most damaging flood event recorded in Collier County?
The flash flood of 20 Sep 1999, with property damage estimated by NCEI at $200K.
How does Collier County compare with Florida for flood?
2.0 events per 100 square miles against 6.3 statewide; the county holds 40 of the state's 3,375 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.