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Flood in Millard County, Utah
10 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.
Millard County, Utah, has 10 flood events in the NCEI record since 1950, with at least one in 9 different years.
July is the busiest month, with 4 of the recorded events. The last 20 years account for 10 events against 0 in the 20 years before, a change that reflects reporting practice as much as weather.
The county holds 0.7% of the 1,399 flood events recorded in Utah; its 0.1 per 100 square miles compares with 1.7 statewide.
Compared with Utah
| Measure | Millard County | Utah | US |
|---|---|---|---|
| Flood events since 1950 | 10 | 1,399 | 183,559 |
| Per 100 square miles | 0.1 | 1.7 | 5.2 |
| Per 10,000 residents | 7.6 | 4.2 | 5.5 |
| Deaths recorded | 0 | 49 | 2,961 |
| Busiest month | July | August | June |
By year
Seasonality
0Feb
0Mar
0Apr
0May
0Jun
0Jul
4Aug
4Sep
2Oct
0Nov
0Dec
0
Recorded events
All 10 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 Aug 2024 | Flood | — | $5K | — | — | — | County |
| 24 Jul 2023 | Flash Flood | — | $1K | — | — | — | County |
| 18 Aug 2021 | Flood | — | $1.0M | — | — | — | County |
| 19 Jul 2017 | Flash Flood | — | — | — | — | — | County |
| 8 Sep 2014 | Flash Flood | — | — | — | — | — | County |
| 31 Aug 2013 | Flash Flood | — | $20K | — | — | — | County |
| 17 Aug 2013 | Flash Flood | — | — | — | — | — | County |
| 1 Sep 2012 | Flash Flood | — | $100K | — | — | — | County |
| 5 Jul 2011 | Flood | — | $50K | — | — | — | County |
| 25 Jul 2007 | Flash Flood | — | — | — | — | — | County |
Questions and answers
How many flood events has Millard County had?
10 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 Millard County?
13 Aug 2024 (Flood). Records reach NCEI about 120 days after the month ends.
What was the most damaging flood event recorded in Millard County?
The flood of 18 Aug 2021, with property damage estimated by NCEI at $1.0M.
How does Millard County compare with Utah for flood?
0.1 events per 100 square miles against 1.7 statewide; the county holds 10 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.