346
Recorded events
8
Counties affected
5
Direct deaths
$27.5M
Property damage
Connecticut flood history: 346 recorded events across 8 counties between 1996 and 2025.
Decade by decade
Connecticut flood history by decade
The 2010s are the busiest decade on record with 108 reported flood events across Connecticut. 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 Connecticut
| Rank | County | Events | Deaths | Damage | Span |
|---|---|---|---|---|---|
| #1 | Hartford County | 52 | 1 | $8.3M | 2006–2024 |
| #2 | Litchfield County | 41 | 1 | $1.4M | 2006–2024 |
| #3 | New London County | 35 | 0 | $6.6M | 1996–2021 |
| #4 | Fairfield County | 24 | 0 | $4.0M | 1996–2025 |
| #5 | New Haven County | 24 | 1 | $110K | 1996–2021 |
| #6 | Windham County | 17 | 0 | $154K | 2006–2023 |
| #7 | Tolland County | 10 | 0 | $50K | 2008–2021 |
| #8 | Middlesex County | 9 | 0 | $320K | 1996–2010 |
Significant events
Deadliest flood events in Connecticut
| Date | County | Scale | Deaths | Injuries |
|---|---|---|---|---|
| Aug 28, 2011 | Hartford County | — | 1 | 0 |
| Sep 2, 2021 | Litchfield County | — | 1 | 0 |
| Apr 23, 2006 | New Haven County | — | 1 | 0 |