Based on NOAA Storm Events Database records from 1996 to 2025, these are the Connecticut counties with the most recorded flood events. Fairfield County tops the list with 226 events. The data includes river floods, flash floods, coastal flooding, and hurricane-related flooding.
| Rank | County | Total Events | River Floods | Flash Floods |
|---|---|---|---|---|
| 1 | Fairfield County | 226 | 28 | 169 |
| 2 | New Haven County | 199 | 35 | 133 |
| 3 | Hartford County | 192 | 96 | 92 |
| 4 | Litchfield County | 192 | 94 | 92 |
| 5 | New London County | 146 | 45 | 81 |
| 6 | Middlesex County | 59 | 16 | 26 |
| 7 | Windham County | 39 | 18 | 19 |
| 8 | Tolland County | 26 | 15 | 7 |
Source: NOAA Storm Events Database (1996–2025).
Free instant lookup using official FEMA data