481
Recorded events
3
Counties affected
1
Direct deaths
$285.9M
Property damage
Alaska flood history: 481 recorded events across 3 counties between 1996 and 2025.
Decade by decade
Alaska flood history by decade
The 2020s are the busiest decade on record with 8 reported flood events across Alaska. 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 Alaska
| Rank | County | Events | Deaths | Damage | Span |
|---|---|---|---|---|---|
| #1 | Sitka City and Borough | 15 | 0 | $13.0M | 2009–2023 |
| #2 | Anchorage Municipality | 1 | 0 | $250K | 2020–2020 |
| #3 | North Slope Borough | 1 | 0 | $0 | 2022–2022 |