Based on NOAA Storm Events Database records from 1996 to 2025, these are the Wyoming counties with the most recorded flood events. Laramie County tops the list with 92 events. The data includes river floods, flash floods, coastal flooding, and hurricane-related flooding.
| Rank | County | Total Events | River Floods | Flash Floods |
|---|---|---|---|---|
| 1 | Laramie County | 92 | 6 | 86 |
| 2 | Fremont County | 66 | 44 | 22 |
| 3 | Johnson County | 38 | 11 | 27 |
| 4 | Goshen County | 34 | 0 | 34 |
| 5 | Platte County | 31 | 6 | 25 |
| 6 | Big Horn County | 30 | 20 | 10 |
| 7 | Natrona County | 29 | 0 | 29 |
| 8 | Park County | 27 | 12 | 15 |
| 9 | Campbell County | 25 | 11 | 14 |
| 10 | Albany County | 23 | 2 | 21 |
| 11 | Sheridan County | 22 | 10 | 12 |
| 12 | Crook County | 21 | 13 | 8 |
| 13 | Weston County | 20 | 6 | 14 |
| 14 | Lincoln County | 19 | 10 | 9 |
| 15 | Washakie County | 16 | 10 | 6 |
| 16 | Sweetwater County | 12 | 4 | 8 |
| 17 | Sublette County | 10 | 5 | 5 |
| 18 | Carbon County | 9 | 3 | 6 |
| 19 | Teton County | 8 | 4 | 4 |
| 20 | Hot Springs County | 8 | 0 | 8 |
| 21 | Converse County | 5 | 0 | 5 |
| 22 | Niobrara County | 5 | 0 | 5 |
| 23 | Uinta County | 1 | 1 | 0 |
Source: NOAA Storm Events Database (1996–2025).
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