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Flood in Chase County, Kansas
25 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.
Chase County, Kansas, has 25 flood events in the NCEI record since 1950, with at least one in 12 different years.
June is the busiest month, with 7 of the recorded events. The last 20 years account for 15 events against 10 in the 20 years before, a change that reflects reporting practice as much as weather.
The county holds 0.5% of the 4,604 flood events recorded in Kansas; its 3.2 per 100 square miles compares with 5.6 statewide.
NCEI attributes 6 deaths in the county to floods and flash floods.
Compared with Kansas
| Measure | Chase County | Kansas | US |
|---|---|---|---|
| Flood events since 1950 | 25 | 4,604 | 183,559 |
| Per 100 square miles | 3.2 | 5.6 | 5.2 |
| Per 10,000 residents | 96.2 | 15.7 | 5.5 |
| Deaths recorded | 6 | 32 | 2,961 |
| Busiest month | June | May | June |
By year
Seasonality
0Feb
0Mar
1Apr
0May
6Jun
7Jul
4Aug
3Sep
1Oct
2Nov
1Dec
0
Recorded events
All 25 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 |
|---|---|---|---|---|---|---|---|
| 21 Sep 2023 | Flash Flood | — | — | — | — | — | County |
| 8 May 2019 | Flood | — | $100 | $100 | — | — | County |
| 9 Oct 2018 | Flood | — | $100 | $100 | — | — | County |
| 27 May 2016 | Flood | — | — | — | — | — | County |
| 26 May 2016 | Flash Flood | — | — | — | — | — | County |
| 10 Jul 2015 | Flash Flood | — | $1K | $100 | — | — | County |
| 16 May 2015 | Flood | — | — | — | — | — | County |
| 29 Jul 2013 | Flood | — | — | — | — | — | County |
| 29 Jul 2013 | Flood | — | — | — | — | — | County |
| 8 May 2009 | Flood | — | $100K | $30K | — | — | County |
| 9 Aug 2008 | Flood | — | — | — | — | — | County |
| 2 Jul 2008 | Flash Flood | — | $35K | — | — | — | County |
| 30 Jun 2007 | Flood | — | — | — | — | — | County |
| 30 Jun 2007 | Flash Flood | — | — | — | — | — | County |
| 30 Mar 2007 | Flood | — | — | — | — | — | County |
| 25 Aug 2005 | Flash Flood | — | — | — | — | — | County |
| 12 Jun 2005 | Flash Flood | — | — | — | — | — | County |
| 8 Jun 2005 | Flash Flood | — | — | — | — | — | County |
| 4 Jun 2005 | Flood | — | — | — | — | — | Forecast zone |
| 4 Jun 2005 | Flash Flood | — | — | — | — | — | County |
| 3 Jun 2005 | Flash Flood | — | — | — | — | — | County |
| 13 May 2005 | Flash Flood | — | — | — | — | — | County |
| 30 Aug 2003 | Flash Flood | — | $250K | — | 6 | — | County |
| 1 Nov 1998 | Flood | — | $2.0M | — | — | — | Forecast zone |
| 4 Oct 1998 | Flash Flood | — | — | — | — | — | County |
Questions and answers
How many flood events has Chase County had?
25 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 Chase County?
21 Sep 2023 (Flash Flood). Records reach NCEI about 120 days after the month ends.
What was the most damaging flood event recorded in Chase County?
The flood of 1 Nov 1998, with property damage estimated by NCEI at $2.0M.
How does Chase County compare with Kansas for flood?
3.2 events per 100 square miles against 5.6 statewide; the county holds 25 of the state's 4,604 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.