Based on NOAA Storm Events Database records from 1996 to 2025, these are the Alaska counties with the most recorded flood events. Bethel Census Area tops the list with 45 events. The data includes river floods, flash floods, coastal flooding, and hurricane-related flooding.
| Rank | County | Total Events | River Floods | Flash Floods |
|---|---|---|---|---|
| 1 | Bethel Census Area | 45 | 18 | 0 |
| 2 | Kenai Peninsula Borough | 28 | 15 | 0 |
| 3 | Sitka City and Borough | 16 | 15 | 1 |
| 4 | Kodiak Island Borough | 16 | 5 | 0 |
| 5 | Lake and Peninsula Borough | 16 | 5 | 0 |
| 6 | Bristol Bay Borough | 15 | 4 | 0 |
| 7 | Dillingham Census Area | 15 | 4 | 0 |
| 8 | Nome Census Area | 9 | 0 | 0 |
| 9 | Matanuska-Susitna Borough | 6 | 6 | 0 |
| 10 | Northwest Arctic Borough | 4 | 0 | 0 |
| 11 | Aleutians West Census Area | 3 | 1 | 0 |
| 12 | Kusilvak Census Area | 3 | 0 | 0 |
| 13 | Anchorage Municipality | 1 | 1 | 0 |
| 14 | Chugach Census Area | 1 | 1 | 0 |
| 15 | Aleutians East Borough | 1 | 0 | 1 |
| 16 | North Slope Borough | 1 | 1 | 0 |
Source: NOAA Storm Events Database (1996–2025).
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