44
Recorded events
0
Direct deaths
0
Direct injuries
$5.6M
Property damage
Flash Flood in Black Hawk County, Iowa: 44 recorded events between 1999 and 2025. The strongest on record measured 0. That places the county #723 nationally and #10 statewide for this hazard.
Decade by decade
Flash Flood in Black Hawk County, Iowa: events per decade
Reporting practice changed over time — early decades are undercounted, not calmer.
The busiest decade for flash flood in Black Hawk County is the 2010s, when 21 of the county's 44 recorded events were logged. Comparing decades is useful for spotting active periods, but the earliest years are thin because systematic reporting for this hazard began later.
Within the Black Hawk County archive, flash flood makes up 5.1% of all recorded severe weather across 8 hazard types. Nationally the county sits at #723 for this hazard and #10 within Iowa, putting it in the 76.0 percentile of all U.S. counties.
Seasonality
Events by month
Jul is the peak month for flash flood in Black Hawk County with 14 recorded events, while Jan is the quietest. Seasonality here is a property of the archive as much as the climate: reports cluster where population and spotter networks are densest.
Most recent
Latest recorded events
| Date | Location | Magnitude | Damage |
|---|---|---|---|
| Jul 11, 2025 | GILBERTVILLE | 0 | $0 |
| Jul 15, 2024 | WATERLOO RANCH ARPT | 0 | $0 |
| Sep 3, 2018 | CEDAR FALLS | 0 | $10K |
| Sep 3, 2018 | NORTH CEDAR | 0 | $0 |
| Jul 1, 2018 | WATERLOO | 0 | $0 |
| Jul 1, 2018 | WATERLOO | 0 | $20K |
| Jun 22, 2016 | WATERLOO | 0 | $0 |
| Jun 30, 2014 | LA PORTE CITY ARPT | 0 | $50K |
| Jun 30, 2014 | ORANGE | 0 | $10K |
| Jun 26, 2013 | DEWAR | 0 | $50K |
Other hazards here
More from Black Hawk County
- Thunderstorm Wind 271
- Hail 253
- Flood 136
- Heavy Rain 92
From the record
What the reports say
Written by National Weather Service staff at the time of the event · public domain
Black Hawk EM, broadcast media, and local spotters reported roadways closed due to flooding, stranded vehicles, and water up to the curb on roadways in and around Waterloo. Public reports in Waterloo and Cedar Falls of swift moving water in low lying areas, as well as water bubbling out of manhole covers.
Quick answers
Frequently asked
How many flash flood events are on record in Black Hawk County, Iowa?
44 flash flood events are recorded in Black Hawk County between 1999 and 2025, causing 0 direct deaths.
What is the strongest flash flood recorded in Black Hawk County?
The strongest flash flood on record in Black Hawk County measured 0.
Where does the flash flood data for Black Hawk County come from?
All events come from the NOAA/NCEI Storm Events Database, the federal public-domain archive of severe weather reports. Dates are UTC, damage is as reported and not inflation-adjusted, and the most recent entries may still be revised.
Cite this page
“Flash Flood in Black Hawk County, Iowa.” Severe Weather History. severeweatherhistory.com/county/iowa/black-hawk-county/flash-flood/ · Data: NOAA/NCEI, FEMA, U.S. Census — public domain.