States › Minnesota › Waseca County › Flood
Flood in Waseca County, Minnesota
29 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 29 flood events in Waseca County, Minnesota, between 1950 and 2026, spread over 11 years.
September is the busiest month, with 8 of the recorded events. The last 20 years account for 25 events against 4 in the 20 years before, a change that reflects reporting practice as much as weather.
The county holds 1.1% of the 2,680 flood events recorded in Minnesota; its 6.8 per 100 square miles compares with 3.4 statewide.
Compared with Minnesota
| Measure | Waseca County | Minnesota | US |
|---|---|---|---|
| Flood events since 1950 | 29 | 2,680 | 183,559 |
| Per 100 square miles | 6.8 | 3.4 | 5.2 |
| Per 10,000 residents | 15.3 | 4.7 | 5.5 |
| Deaths recorded | 0 | 23 | 2,961 |
| Busiest month | September | June | June |
By year
Seasonality
0Feb
0Mar
6Apr
1May
1Jun
6Jul
3Aug
4Sep
8Oct
0Nov
0Dec
0
Recorded events
All 29 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 |
|---|---|---|---|---|---|---|---|
| 17 Aug 2025 | Flash Flood | — | — | — | — | — | County |
| 21 Jun 2024 | Flash Flood | — | — | — | — | — | County |
| 21 Jun 2024 | Flash Flood | — | — | — | — | — | County |
| 11 May 2023 | Flash Flood | — | — | — | — | — | County |
| 5 Jul 2019 | Flash Flood | — | — | — | — | — | County |
| 5 Jul 2019 | Flash Flood | — | — | — | — | — | County |
| 5 Jul 2019 | Flash Flood | — | — | — | — | — | County |
| 22 Sep 2016 | Flash Flood | — | — | — | — | — | County |
| 22 Sep 2016 | Flash Flood | — | — | — | — | — | County |
| 22 Sep 2016 | Flood | — | — | — | — | — | County |
| 21 Sep 2016 | Flash Flood | — | — | — | — | — | County |
| 21 Sep 2016 | Flash Flood | — | — | — | — | — | County |
| 12 Aug 2016 | Flash Flood | — | — | — | — | — | County |
| 16 Jun 2014 | Flash Flood | — | — | — | — | — | County |
| 16 Jun 2014 | Flash Flood | — | — | — | — | — | County |
| 25 Mar 2011 | Flood | — | — | — | — | — | County |
| 23 Sep 2010 | Flood | — | $1.0M | — | — | — | County |
| 23 Sep 2010 | Flash Flood | — | — | — | — | — | County |
| 17 Jun 2010 | Flash Flood | — | — | — | — | — | County |
| 15 Mar 2010 | Flood | — | — | — | — | — | County |
| 15 Mar 2010 | Flood | — | — | — | — | — | County |
| 15 Mar 2010 | Flood | — | — | — | — | — | County |
| 15 Mar 2010 | Flood | — | — | — | — | — | County |
| 15 Mar 2010 | Flood | — | — | — | — | — | County |
| 19 Aug 2007 | Flash Flood | — | — | — | — | — | County |
| 15 Sep 2004 | Flood | — | — | — | — | — | Forecast zone |
| 1 Aug 2004 | Flash Flood | — | — | — | — | — | County |
| 9 Jun 2004 | Flood | — | — | — | — | — | Forecast zone |
| 1 Apr 2001 | Flood | — | — | — | — | — | Forecast zone |
Questions and answers
How many flood events has Waseca County had?
29 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 Waseca County?
17 Aug 2025 (Flash Flood). Records reach NCEI about 120 days after the month ends.
What was the most damaging flood event recorded in Waseca County?
The flood of 23 Sep 2010, with property damage estimated by NCEI at $1.0M.
How does Waseca County compare with Minnesota for flood?
6.8 events per 100 square miles against 3.4 statewide; the county holds 29 of the state's 2,680 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.