450
Recorded events
16
Counties affected
2
Direct deaths
$65.0M
Property damage
Maine flash flood history: 450 recorded events across 16 counties between 1996 and 2025.
Decade by decade
Maine flash flood history by decade
The 2020s are the busiest decade on record with 152 reported flash flood events across Maine. 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 Maine
| Rank | County | Events | Deaths | Damage | Span |
|---|---|---|---|---|---|
| #1 | Oxford County | 92 | 0 | $11.3M | 1996–2024 |
| #2 | Aroostook County | 65 | 0 | $410K | 1997–2023 |
| #3 | Franklin County | 52 | 1 | $10.6M | 1996–2024 |
| #4 | Piscataquis County | 35 | 0 | $529K | 1996–2025 |
| #5 | Somerset County | 35 | 0 | $3.0M | 1996–2025 |
| #6 | Cumberland County | 31 | 1 | $18.6M | 1996–2024 |
| #7 | Androscoggin County | 26 | 0 | $2.3M | 1998–2023 |
| #8 | Penobscot County | 20 | 0 | $265K | 1996–2024 |
| #9 | York County | 18 | 0 | $13.2M | 1996–2024 |
| #10 | Hancock County | 16 | 0 | $2.1M | 1996–2023 |
| #11 | Washington County | 15 | 0 | $905K | 1998–2023 |
| #12 | Kennebec County | 14 | 0 | $897K | 1997–2023 |
| #13 | Knox County | 7 | 0 | $381K | 1996–2024 |
| #14 | Sagadahoc County | 5 | 0 | $150K | 1998–2023 |
| #15 | Lincoln County | 4 | 0 | $345K | 2009–2024 |
| #16 | Waldo County | 3 | 0 | $193K | 1996–2009 |
Significant events
Deadliest flash flood events in Maine
| Date | County | Scale | Deaths | Injuries |
|---|---|---|---|---|
| Oct 21, 1996 | Cumberland County | — | 1 | 0 |
| Mar 31, 1998 | Franklin County | — | 1 | 0 |