604
Recorded events
12
Counties affected
0
Direct deaths
$92.2M
Property damage
Massachusetts flash flood history: 604 recorded events across 12 counties between 1996 and 2025.
Decade by decade
Massachusetts flash flood history by decade
The 2010s are the busiest decade on record with 212 reported flash flood events across Massachusetts. 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 flash flood events in Massachusetts
| Rank | County | Events | Deaths | Damage | Span |
|---|---|---|---|---|---|
| #1 | Berkshire County | 108 | 0 | $1.1M | 1996–2023 |
| #2 | Worcester County | 78 | 0 | $1.5M | 1996–2025 |
| #3 | Middlesex County | 75 | 0 | $15.8M | 1996–2025 |
| #4 | Bristol County | 60 | 0 | $3.8M | 1998–2025 |
| #5 | Essex County | 55 | 0 | $19.9M | 1996–2025 |
| #6 | Norfolk County | 51 | 0 | $34.2M | 1996–2025 |
| #7 | Hampden County | 39 | 0 | $539K | 1996–2025 |
| #8 | Franklin County | 38 | 0 | $3.3M | 1996–2025 |
| #9 | Suffolk County | 31 | 0 | $11.2M | 1996–2024 |
| #10 | Hampshire County | 30 | 0 | $681K | 1996–2025 |
| #11 | Plymouth County | 21 | 0 | $203K | 1996–2025 |
| #12 | Barnstable County | 18 | 0 | $141K | 2005–2023 |