589
Recorded events
38
Counties affected
10
Direct deaths
$602.6M
Property damage
Washington flood history: 589 recorded events across 38 counties between 1996 and 2026.
Decade by decade
Washington flood history by decade
The 2010s are the busiest decade on record with 219 reported flood events across Washington. 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 flood events in Washington
| Rank | County | Events | Deaths | Damage | Span |
|---|---|---|---|---|---|
| #1 | Wahkiakum County | 41 | 0 | $769K | 2007–2025 |
| #2 | Okanogan County | 39 | 0 | $19.0M | 2006–2023 |
| #3 | Whitman County | 33 | 0 | $1.0M | 2000–2026 |
| #4 | Yakima County | 33 | 0 | $1.9M | 2006–2020 |
| #5 | Spokane County | 33 | 0 | $13.5M | 2006–2025 |
| #6 | Chelan County | 31 | 0 | $2.2M | 2006–2026 |
| #7 | Cowlitz County | 27 | 0 | $253.9M | 2005–2023 |
| #8 | Ferry County | 19 | 0 | $6.6M | 2008–2023 |
| #9 | Stevens County | 15 | 0 | $2.5M | 2006–2023 |
| #10 | Pacific County | 12 | 0 | $11.0M | 2006–2023 |
| #11 | Pend Oreille County | 12 | 0 | $8.7M | 2011–2023 |
| #12 | Kittitas County | 12 | 0 | $16.2M | 2006–2017 |
| #13 | Clark County | 12 | 0 | $1.5M | 2009–2022 |
| #14 | Walla Walla County | 11 | 0 | $8.9M | 2011–2026 |
| #15 | Snohomish County | 10 | 0 | $14.1M | 1997–2023 |
| #16 | Lincoln County | 8 | 0 | $1.6M | 2001–2025 |
| #17 | Lewis County | 8 | 3 | $70.9M | 2006–2021 |
| #18 | King County | 7 | 0 | $28.7M | 1996–2021 |
| #19 | Clallam County | 6 | 0 | $6.8M | 2006–2021 |
| #20 | Benton County | 6 | 0 | $513K | 2009–2017 |
| #21 | Grays Harbor County | 6 | 3 | $5.5M | 1996–2022 |
| #22 | Whatcom County | 5 | 1 | $48.5M | 2006–2021 |
| #23 | Skagit County | 5 | 1 | $18.9M | 2006–2021 |
| #24 | Mason County | 5 | 1 | $1.6M | 2007–2021 |
| #25 | Thurston County | 4 | 0 | $3.4M | 2006–2021 |
Significant events
Deadliest flood events in Washington
| Date | County | Scale | Deaths | Injuries |
|---|---|---|---|---|
| Jan 7, 2022 | Grays Harbor County | — | 2 | 0 |
| Nov 5, 2006 | Lewis County | — | 2 | 0 |
| Nov 14, 2021 | Whatcom County | — | 1 | 0 |
| Dec 29, 1996 | Grays Harbor County | — | 1 | 0 |
| Dec 3, 2007 | Lewis County | — | 1 | 0 |
| Dec 3, 2007 | Mason County | — | 1 | 0 |
| Nov 28, 2021 | Skagit County | — | 1 | 0 |