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Flood in Delaware County, New York
137 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.
Delaware County, New York, has 137 flood events in the NCEI record since 1950, with at least one in 24 different years.
June is the busiest month, with 30 of the recorded events. The last 20 years account for 77 events against 60 in the 20 years before, a change that reflects reporting practice as much as weather.
The county holds 2% of the 6,836 flood events recorded in New York; its 9.5 per 100 square miles compares with 14.5 statewide.
NCEI attributes 15 deaths in the county to floods and flash floods.
Compared with New York
| Measure | Delaware County | New York | US |
|---|---|---|---|
| Flood events since 1950 | 137 | 6,836 | 183,559 |
| Per 100 square miles | 9.5 | 14.5 | 5.2 |
| Per 10,000 residents | 30.9 | 3.4 | 5.5 |
| Deaths recorded | 15 | 117 | 2,961 |
| Busiest month | June | July | June |
By year
Seasonality
12Feb
3Mar
6Apr
8May
13Jun
30Jul
5Aug
18Sep
11Oct
7Nov
9Dec
15
Recorded events
All 137 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 |
|---|---|---|---|---|---|---|---|
| 13 Jul 2025 | Flash Flood | — | $10K | — | — | — | County |
| 22 Jun 2025 | Flash Flood | — | $2K | — | — | — | County |
| 22 Jun 2025 | Flash Flood | — | $2K | — | — | — | County |
| 7 Jun 2025 | Flash Flood | — | $2K | — | — | — | County |
| 7 Jun 2025 | Flash Flood | — | $2K | — | — | — | County |
| 7 Jun 2025 | Flash Flood | — | $2K | — | — | — | County |
| 7 Jun 2025 | Flash Flood | — | $2K | — | — | — | County |
| 4 May 2025 | Flash Flood | — | $5K | — | — | — | County |
| 9 Aug 2024 | Flash Flood | — | $15K | — | — | — | County |
| 9 Aug 2024 | Flash Flood | — | $40K | — | — | — | County |
| 9 Aug 2024 | Flash Flood | — | $5K | — | — | — | County |
| 9 Aug 2024 | Flash Flood | — | $125K | — | — | — | County |
| 9 Aug 2024 | Flash Flood | — | $2K | — | — | — | County |
| 9 Aug 2024 | Flash Flood | — | $20K | — | — | — | County |
| 18 Dec 2023 | Flash Flood | — | $2K | — | — | — | County |
| 11 Sep 2023 | Flash Flood | — | $7K | — | — | — | County |
| 8 Apr 2022 | Flood | — | $5.0M | — | — | — | County |
| 26 Oct 2021 | Flash Flood | — | $10K | — | — | — | County |
| 26 Oct 2021 | Flash Flood | — | $10K | — | — | — | County |
| 12 Jul 2021 | Flash Flood | — | $20K | — | — | — | County |
| 8 Jun 2021 | Flash Flood | — | $3K | — | — | — | County |
| 8 Jun 2021 | Flash Flood | — | $5K | — | — | — | County |
| 8 Jun 2021 | Flash Flood | — | $30K | — | — | — | County |
| 25 Dec 2020 | Flash Flood | — | $10K | — | — | — | County |
| 25 Dec 2020 | Flash Flood | — | $10K | — | — | — | County |
| 25 Dec 2020 | Flash Flood | — | $50K | — | — | — | County |
| 25 Dec 2020 | Flash Flood | — | $25K | — | — | — | County |
| 25 Dec 2020 | Flash Flood | — | $10K | — | — | — | County |
| 25 Dec 2020 | Flood | — | $20K | — | — | — | County |
| 25 Dec 2020 | Flash Flood | — | $10K | — | — | — | County |
| 25 Dec 2020 | Flash Flood | — | $10K | — | — | — | County |
| 8 Aug 2018 | Flash Flood | — | $100K | — | — | — | County |
| 8 Aug 2018 | Flash Flood | — | $300K | — | — | — | County |
| 12 Jan 2018 | Flood | — | — | — | — | — | County |
| 12 Jan 2018 | Flood | — | — | — | — | — | County |
| 12 Jan 2018 | Flood | — | — | — | — | — | County |
| 5 Jun 2017 | Flash Flood | — | $35K | — | — | — | County |
| 5 Jun 2017 | Flash Flood | — | $8K | — | — | — | County |
| 5 Jun 2017 | Flash Flood | — | $25K | — | — | — | County |
| 5 Jun 2017 | Flash Flood | — | $20K | — | — | — | County |
| 5 Jun 2017 | Flood | — | $1K | — | — | — | County |
| 25 Feb 2017 | Flash Flood | — | $45K | — | — | — | County |
| 25 Feb 2017 | Flash Flood | — | $35K | — | — | — | County |
| 28 Jun 2016 | Flash Flood | — | $50K | — | — | — | County |
| 28 Jun 2016 | Flash Flood | — | $50K | — | — | — | County |
| 28 Jun 2016 | Flash Flood | — | $75K | — | — | — | County |
| 25 Jun 2014 | Flash Flood | — | $50K | — | — | — | County |
| 13 Aug 2013 | Flash Flood | — | $200K | — | — | — | County |
| 29 May 2013 | Flash Flood | — | $20K | — | — | — | County |
| 29 May 2013 | Flash Flood | — | $80K | — | — | — | County |
| 29 May 2013 | Flash Flood | — | $40K | — | — | — | County |
| 29 May 2013 | Flash Flood | — | $20K | — | — | — | County |
| 29 May 2013 | Flash Flood | — | $80K | — | — | — | County |
| 7 Sep 2011 | Flood | — | $2.0M | — | — | — | County |
| 7 Sep 2011 | Flood | — | $2.0M | — | — | — | County |
| 7 Sep 2011 | Flood | — | $2.0M | — | — | — | County |
| 28 Aug 2011 | Flood | — | $50K | — | — | — | County |
| 28 Aug 2011 | Flood | — | $50K | — | — | — | County |
| 28 Aug 2011 | Flash Flood | — | $5.0M | — | 1 | — | County |
| 28 Aug 2011 | Flash Flood | — | $10K | — | — | — | County |
| 28 Aug 2011 | Flash Flood | — | $5.0M | — | — | — | County |
| 28 Aug 2011 | Flash Flood | — | $250K | — | — | — | County |
| 20 May 2011 | Flash Flood | — | $25K | — | — | — | County |
| 20 May 2011 | Flash Flood | — | — | — | — | — | County |
| 28 Apr 2011 | Flash Flood | — | $650K | — | — | — | County |
| 1 Oct 2010 | Flash Flood | — | $2.1M | — | — | — | County |
| 23 Mar 2010 | Flood | — | $10K | — | — | — | County |
| 25 Jan 2010 | Flash Flood | — | — | — | — | — | County |
| 10 Aug 2008 | Flash Flood | — | — | — | — | — | County |
| 23 Jul 2008 | Flash Flood | — | $10M | — | — | — | County |
| 8 Mar 2008 | Flood | — | — | — | — | — | County |
| 8 Mar 2008 | Flash Flood | — | — | — | — | — | County |
| 8 Mar 2008 | Flash Flood | — | — | — | — | — | County |
| 20 Jun 2007 | Flood | — | — | — | — | — | County |
| 19 Jun 2007 | Flash Flood | — | $25K | — | — | — | County |
| 19 Jun 2007 | Flash Flood | — | $30M | — | 4 | — | County |
| 16 Apr 2007 | Flood | — | — | — | — | — | County |
| 16 Nov 2006 | Flash Flood | — | $10K | — | — | — | County |
| 16 Nov 2006 | Flash Flood | — | $30K | — | — | — | County |
| 16 Nov 2006 | Flash Flood | — | $10K | — | — | — | County |
| 27 Jun 2006 | Flood | — | $5.0M | — | — | — | County |
| 27 Jun 2006 | Flood | — | $10M | — | — | — | County |
| 27 Jun 2006 | Flood | — | — | — | — | — | County |
| 27 Jun 2006 | Flood | — | $10M | — | — | — | County |
| 27 Jun 2006 | Flash Flood | — | $250M | — | 2 | — | County |
| 26 Jun 2006 | Flood | — | — | — | — | — | County |
| 26 Jun 2006 | Flood | — | — | — | — | — | County |
| 26 Jun 2006 | Flash Flood | — | $50K | — | — | — | County |
| 18 Jan 2006 | Flood | — | $10K | — | — | — | County |
| 30 Nov 2005 | Flood | — | $5K | — | — | — | Forecast zone |
| 8 Oct 2005 | Flood | — | — | — | — | — | Forecast zone |
| 2 Apr 2005 | Flood | — | $500K | — | — | — | Forecast zone |
| 2 Apr 2005 | Flash Flood | — | $2.0M | — | — | — | County |
| 2 Apr 2005 | Flood | — | $500K | — | — | — | Forecast zone |
| 2 Apr 2005 | Flood | — | $500K | — | — | — | Forecast zone |
| 2 Apr 2005 | Flood | — | $50K | — | — | — | Forecast zone |
| 28 Mar 2005 | Flood | — | $10K | — | — | — | Forecast zone |
| 14 Jan 2005 | Flood | — | — | — | — | — | Forecast zone |
| 14 Jan 2005 | Flood | — | — | — | — | — | Forecast zone |
| 28 Nov 2004 | Flood | — | — | — | — | — | Forecast zone |
| 28 Nov 2004 | Flash Flood | — | $20K | — | — | — | County |
| 18 Sep 2004 | Flood | — | $500K | — | — | — | Forecast zone |
| 18 Sep 2004 | Flood | — | $1.0M | — | — | — | Forecast zone |
| 18 Sep 2004 | Flood | — | $1.0M | — | — | — | Forecast zone |
| 18 Sep 2004 | Flash Flood | — | $12M | — | — | — | County |
| 13 Aug 2004 | Flood | — | — | — | — | — | Forecast zone |
| 13 Aug 2004 | Flood | — | — | — | — | — | Forecast zone |
| 26 May 2004 | Flash Flood | — | $250K | — | — | — | County |
| 13 May 2004 | Flash Flood | — | $10K | — | — | — | County |
| 13 May 2004 | Flash Flood | — | $10K | — | — | — | County |
| 24 Dec 2003 | Flood | — | $20K | — | — | — | Forecast zone |
| 11 Dec 2003 | Flood | — | — | — | — | — | Forecast zone |
| 20 Nov 2003 | Flood | — | — | — | — | — | Forecast zone |
| 29 Oct 2003 | Flood | — | $50K | — | 2 | 1 | Forecast zone |
| 29 Oct 2003 | Flood | — | $50K | — | — | — | Forecast zone |
| 27 Oct 2003 | Flood | — | $10K | — | — | — | Forecast zone |
| 4 Sep 2003 | Flood | — | — | — | — | — | Forecast zone |
| 4 Sep 2003 | Flood | — | — | — | — | — | Forecast zone |
| 2 Sep 2003 | Flood | — | — | — | — | — | Forecast zone |
| 13 Jun 2003 | Flash Flood | — | $50K | — | — | — | County |
| 28 May 2002 | Flash Flood | — | $20K | — | — | — | County |
| 27 May 2002 | Flash Flood | — | $50K | — | — | — | County |
| 26 Mar 2002 | Flash Flood | — | — | — | — | — | County |
| 17 Dec 2000 | Flash Flood | — | $500K | — | — | — | County |
| 17 Dec 2000 | Flood | — | — | — | — | — | Forecast zone |
| 27 Feb 2000 | Flood | — | — | — | — | — | Forecast zone |
| 4 Jul 1999 | Flash Flood | — | $1.5M | $500K | — | — | County |
| 24 Jan 1999 | Flood | — | — | — | — | — | Forecast zone |
| 8 Jul 1998 | Flash Flood | — | $650K | — | — | — | County |
| 6 Jan 1998 | Flood | — | — | — | — | — | Forecast zone |
| 2 Dec 1996 | Flash Flood | — | $10K | — | — | — | County |
| 1 Dec 1996 | Flood | — | — | — | — | — | Forecast zone |
| 9 Nov 1996 | Flood | — | — | — | — | — | Forecast zone |
| 9 Nov 1996 | Flash Flood | — | $500K | — | — | 2 | County |
| 27 Jan 1996 | Flash Flood | — | $10K | — | — | — | County |
| 19 Jan 1996 | Flash Flood | — | $9.3M | — | 6 | — | County |
| 19 Jan 1996 | Flood | — | — | — | — | — | Forecast zone |
Questions and answers
How many flood events has Delaware County had?
137 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 Delaware County?
13 Jul 2025 (Flash Flood). Records reach NCEI about 120 days after the month ends.
What was the most damaging flood event recorded in Delaware County?
The flash flood of 27 Jun 2006, with property damage estimated by NCEI at $250M; 2 deaths recorded.
How does Delaware County compare with New York for flood?
9.5 events per 100 square miles against 14.5 statewide; the county holds 137 of the state's 6,836 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.