2,904
Recorded events
104
Counties affected
21
Direct deaths
$318.9M
Property damage
Kansas flash flood history: 2,904 recorded events across 104 counties between 1996 and 2026.
Decade by decade
Kansas flash flood history by decade
The 2000s are the busiest decade on record with 1,192 reported flash flood events across Kansas. Earlier decades are thinner because systematic reporting for this hazard expanded over time, not because the weather was calmer.
County ranking
Counties with the most flash flood events in Kansas
| Rank | County | Events | Deaths | Damage | Span |
|---|---|---|---|---|---|
| #1 | Cherokee County | 131 | 0 | $2.9M | 1996–2026 |
| #2 | Sedgwick County | 127 | 1 | $6.5M | 1998–2025 |
| #3 | Shawnee County | 92 | 0 | $9.7M | 1996–2026 |
| #4 | Butler County | 86 | 1 | $4.2M | 1999–2025 |
| #5 | Crawford County | 85 | 0 | $587K | 1996–2025 |
| #6 | Johnson County | 84 | 3 | $9.0M | 1996–2025 |
| #7 | Leavenworth County | 71 | 0 | $4.5M | 1996–2023 |
| #8 | Bourbon County | 71 | 0 | $1.2M | 1996–2025 |
| #9 | Douglas County | 62 | 0 | $6.6M | 1996–2026 |
| #10 | Anderson County | 62 | 0 | $1.1M | 1996–2025 |
| #11 | Lyon County | 61 | 1 | $4.6M | 1996–2025 |
| #12 | Jefferson County | 55 | 0 | $3.2M | 1996–2026 |
| #13 | Montgomery County | 48 | 3 | $81.8M | 1998–2021 |
| #14 | Franklin County | 46 | 0 | $3.8M | 1996–2024 |
| #15 | Logan County | 46 | 0 | $230K | 1996–2021 |
| #16 | Osage County | 44 | 0 | $2.1M | 1996–2023 |
| #17 | Cowley County | 44 | 0 | $676K | 1999–2022 |
| #18 | Sherman County | 43 | 0 | $37K | 1996–2023 |
| #19 | Riley County | 43 | 0 | $18.1M | 1997–2025 |
| #20 | Ford County | 41 | 0 | $2.1M | 1996–2025 |
| #21 | Sumner County | 40 | 0 | $2.4M | 1999–2025 |
| #22 | Labette County | 40 | 0 | $900K | 1998–2026 |
| #23 | Marion County | 37 | 0 | $393K | 1997–2021 |
| #24 | Cheyenne County | 37 | 0 | $167K | 1996–2025 |
| #25 | Dickinson County | 37 | 1 | $1.3M | 1996–2024 |
Significant events
Deadliest flash flood events in Kansas
| Date | County | Scale | Deaths | Injuries |
|---|---|---|---|---|
| Aug 31, 2003 | Chase County | — | 6 | 0 |
| Aug 15, 2018 | Montgomery County | — | 2 | 0 |
| Oct 5, 1998 | Johnson County | — | 2 | 0 |
| Aug 20, 2016 | Butler County | — | 1 | 0 |
| Jul 1, 2007 | Montgomery County | — | 1 | 0 |
| Jun 3, 2005 | Dickinson County | — | 1 | 0 |
| Jun 1, 1996 | Morris County | — | 1 | 0 |
| Feb 24, 2001 | Jackson County | — | 1 | 0 |
| Sep 4, 2016 | Norton County | — | 1 | 0 |
| Sep 12, 2008 | Sedgwick County | — | 1 | 1 |