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Flood in Grand County, Utah
94 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 94 flood events in Grand County, Utah, between 1950 and 2026, spread over 23 years.
August is the busiest month, with 33 of the recorded events. The last 20 years account for 72 events against 22 in the 20 years before, a change that reflects reporting practice as much as weather.
The county holds 6.7% of the 1,399 flood events recorded in Utah; its 2.6 per 100 square miles compares with 1.7 statewide.
NCEI attributes 3 deaths in the county to floods and flash floods.
Compared with Utah
| Measure | Grand County | Utah | US |
|---|---|---|---|
| Flood events since 1950 | 94 | 1,399 | 183,559 |
| Per 100 square miles | 2.6 | 1.7 | 5.2 |
| Per 10,000 residents | 97.3 | 4.2 | 5.5 |
| Deaths recorded | 3 | 49 | 2,961 |
| Busiest month | August | August | June |
By year
Seasonality
0Feb
0Mar
0Apr
0May
9Jun
7Jul
18Aug
33Sep
17Oct
10Nov
0Dec
0
Recorded events
All 94 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 |
|---|---|---|---|---|---|---|---|
| 12 Sep 2025 | Flash Flood | — | $30K | — | — | — | County |
| 12 Sep 2025 | Flash Flood | — | $3K | — | — | — | County |
| 23 Aug 2024 | Flash Flood | — | — | — | — | — | County |
| 27 Jun 2024 | Flash Flood | — | — | — | — | — | County |
| 21 Jun 2024 | Flash Flood | — | — | — | 2 | — | County |
| 24 Aug 2023 | Flash Flood | — | — | — | — | — | County |
| 17 Aug 2023 | Flood | — | — | — | — | — | County |
| 18 May 2023 | Flood | — | $3K | — | — | — | County |
| 5 May 2023 | Flood | — | $500 | — | — | — | County |
| 5 May 2023 | Flood | — | $1K | — | — | — | County |
| 5 May 2023 | Flood | — | $1K | — | — | — | County |
| 2 Oct 2022 | Flash Flood | — | $26M | — | — | — | County |
| 2 Oct 2022 | Flash Flood | — | $5K | — | — | — | County |
| 20 Aug 2022 | Flash Flood | — | $9.5M | — | — | — | County |
| 20 Aug 2022 | Flash Flood | — | $250K | — | — | — | County |
| 20 Aug 2022 | Flash Flood | — | $500 | — | — | — | County |
| 20 Aug 2022 | Flash Flood | — | $250K | — | — | — | County |
| 15 Aug 2022 | Flood | — | $250 | — | — | — | County |
| 11 Aug 2022 | Flash Flood | — | $3K | — | — | — | County |
| 11 Aug 2022 | Flash Flood | — | $100 | — | — | — | County |
| 11 Aug 2022 | Flash Flood | — | $100 | — | — | — | County |
| 30 Jul 2022 | Flash Flood | — | $5K | — | — | — | County |
| 30 Jul 2022 | Flash Flood | — | $20K | — | — | — | County |
| 19 Aug 2021 | Flood | — | $1K | — | — | — | County |
| 28 Jul 2021 | Flash Flood | — | $2.5M | — | — | — | County |
| 13 Jul 2021 | Flash Flood | — | $500K | — | — | — | County |
| 4 Oct 2018 | Flash Flood | — | — | — | — | — | County |
| 14 Sep 2017 | Flash Flood | — | — | — | — | — | County |
| 14 Sep 2017 | Flash Flood | — | $30K | — | — | — | County |
| 5 Aug 2017 | Flash Flood | — | $1.0M | — | — | — | County |
| 25 Jul 2017 | Flash Flood | — | $1K | — | — | — | County |
| 3 Aug 2016 | Flash Flood | — | $2K | — | — | — | County |
| 19 Oct 2015 | Flash Flood | — | — | — | — | — | County |
| 30 Aug 2015 | Flash Flood | — | — | — | — | — | County |
| 11 Jun 2015 | Flash Flood | — | — | — | — | — | County |
| 11 Jun 2015 | Flash Flood | — | — | — | — | — | County |
| 6 Jun 2015 | Flash Flood | — | — | — | — | — | County |
| 6 Jun 2015 | Flash Flood | — | — | — | — | — | County |
| 29 Sep 2014 | Flash Flood | — | — | — | — | — | County |
| 28 Sep 2014 | Flash Flood | — | — | — | — | — | County |
| 28 Sep 2014 | Flash Flood | — | $20K | — | 1 | — | County |
| 9 Sep 2014 | Flash Flood | — | — | — | — | — | County |
| 14 Aug 2014 | Flash Flood | — | — | — | — | — | County |
| 13 Aug 2014 | Flash Flood | — | — | — | — | — | County |
| 13 Aug 2014 | Flash Flood | — | — | — | — | — | County |
| 4 Aug 2014 | Flash Flood | — | — | — | — | — | County |
| 31 Jul 2014 | Flash Flood | — | $10K | — | — | — | County |
| 29 Jul 2014 | Flash Flood | — | — | — | — | — | County |
| 11 May 2014 | Flash Flood | — | — | — | — | — | County |
| 22 Sep 2013 | Flash Flood | — | — | — | — | — | County |
| 14 Sep 2013 | Flash Flood | — | — | — | — | — | County |
| 13 Sep 2013 | Flash Flood | — | — | — | — | — | County |
| 13 Sep 2013 | Flash Flood | — | — | — | — | — | County |
| 10 Sep 2013 | Flash Flood | — | — | — | — | — | County |
| 25 Aug 2013 | Flash Flood | — | — | — | — | — | County |
| 24 Aug 2013 | Flash Flood | — | — | — | — | — | County |
| 23 Aug 2013 | Flash Flood | — | — | — | — | — | County |
| 8 May 2013 | Flash Flood | — | — | — | — | — | County |
| 13 Oct 2012 | Flash Flood | — | — | — | — | — | County |
| 4 Aug 2011 | Flash Flood | — | — | — | — | — | County |
| 20 Jul 2011 | Flash Flood | — | — | — | — | — | County |
| 1 Jul 2011 | Flood | — | — | — | — | — | County |
| 1 Jun 2011 | Flood | — | $125K | — | — | — | County |
| 19 Aug 2010 | Flash Flood | — | — | — | — | — | County |
| 19 Aug 2010 | Flash Flood | — | $2.5M | — | — | — | County |
| 17 Aug 2010 | Flash Flood | — | — | — | — | — | County |
| 4 Aug 2010 | Flash Flood | — | — | — | — | — | County |
| 23 May 2009 | Flash Flood | — | $3K | — | — | — | County |
| 23 May 2009 | Flash Flood | — | $70K | — | — | — | County |
| 23 May 2009 | Flash Flood | — | $40K | — | — | — | County |
| 28 Aug 2007 | Flash Flood | — | $1K | — | — | — | County |
| 23 Jul 2007 | Flash Flood | — | $1K | — | — | — | County |
| 14 Oct 2006 | Flash Flood | — | $15K | — | — | 1 | County |
| 9 Oct 2006 | Flash Flood | — | $20K | — | — | — | County |
| 6 Oct 2006 | Flood | — | $500K | — | — | — | County |
| 5 Oct 2006 | Flash Flood | — | — | — | — | — | County |
| 3 Oct 2006 | Flash Flood | — | $40K | — | — | — | County |
| 10 Jul 2006 | Flash Flood | — | $25K | — | — | — | County |
| 9 Sep 2005 | Flash Flood | — | $3K | — | — | — | County |
| 16 Aug 2005 | Flash Flood | — | — | — | — | — | County |
| 1 Aug 2005 | Flash Flood | — | — | — | — | — | County |
| 29 Sep 2002 | Flash Flood | — | — | — | — | — | County |
| 12 Sep 2002 | Flash Flood | — | $25K | — | — | — | County |
| 13 Aug 2001 | Flood | — | — | — | — | — | County |
| 10 Jul 2001 | Flash Flood | — | — | — | — | — | County |
| 9 Jul 2001 | Flood | — | — | — | — | — | County |
| 8 Jul 2001 | Flood | — | — | — | — | — | County |
| 28 Aug 2000 | Flood | — | — | — | — | — | County |
| 9 Jul 2000 | Flood | — | — | — | — | — | County |
| 11 Aug 1999 | Flash Flood | — | — | — | — | — | County |
| 30 Jul 1999 | Flash Flood | — | $2K | — | — | — | County |
| 14 Jul 1999 | Flash Flood | — | $60K | — | — | — | County |
| 8 Jul 1999 | Flash Flood | — | — | — | — | — | County |
| 6 Sep 1997 | Flash Flood | — | $175K | — | — | — | County |
Questions and answers
How many flood events has Grand County had?
94 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 Grand County?
12 Sep 2025 (Flash Flood). Records reach NCEI about 120 days after the month ends.
What was the most damaging flood event recorded in Grand County?
The flash flood of 2 Oct 2022, with property damage estimated by NCEI at $26M.
How does Grand County compare with Utah for flood?
2.6 events per 100 square miles against 1.7 statewide; the county holds 94 of the state's 1,399 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.