2,697
Recorded events
64
Counties affected
28
Direct deaths
$4.3B
Property damage
Louisiana flash flood history: 2,697 recorded events across 64 counties between 1996 and 2026.
Decade by decade
Louisiana flash flood history by decade
The 2010s are the busiest decade on record with 944 reported flash flood events across Louisiana. 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 Louisiana
| Rank | County | Events | Deaths | Damage | Span |
|---|---|---|---|---|---|
| #1 | Caddo Parish | 246 | 2 | $12.1M | 1996–2025 |
| #2 | Orleans Parish | 194 | 2 | $6.7M | 1998–2025 |
| #3 | Bossier Parish | 125 | 0 | $2.6M | 1996–2025 |
| #4 | St. Tammany Parish | 123 | 0 | $10.8M | 1998–2024 |
| #5 | Ouachita Parish | 106 | 4 | $41.8M | 1999–2025 |
| #6 | Calcasieu Parish | 106 | 1 | $601.5M | 1996–2025 |
| #7 | East Baton Rouge Parish | 100 | 3 | $723.5M | 1997–2026 |
| #8 | Jefferson Parish | 88 | 0 | $40.4M | 1998–2025 |
| #9 | Natchitoches Parish | 87 | 1 | $1.8M | 1998–2025 |
| #10 | Webster Parish | 58 | 0 | $1.7M | 1996–2025 |
| #11 | St. Charles Parish | 56 | 0 | $55.1M | 1999–2025 |
| #12 | Sabine Parish | 55 | 0 | $2.1M | 1996–2025 |
| #13 | De Soto Parish | 55 | 1 | $110K | 1996–2024 |
| #14 | Lafayette Parish | 49 | 0 | $574.9M | 1996–2025 |
| #15 | Grant Parish | 44 | 0 | $270K | 1999–2024 |
| #16 | Morehouse Parish | 44 | 0 | $7.8M | 1999–2025 |
| #17 | Richland Parish | 44 | 0 | $21.9M | 1996–2024 |
| #18 | Rapides Parish | 42 | 2 | $22.1M | 1998–2025 |
| #19 | Union Parish | 42 | 0 | $310K | 1996–2023 |
| #20 | Franklin Parish | 41 | 0 | $38.3M | 1996–2024 |
| #21 | Winn Parish | 37 | 0 | $8K | 1999–2025 |
| #22 | St. Landry Parish | 36 | 0 | $34.3M | 1998–2026 |
| #23 | Iberia Parish | 35 | 0 | $45.0M | 1996–2025 |
| #24 | Beauregard Parish | 34 | 0 | $22.4M | 1998–2025 |
| #25 | West Carroll Parish | 33 | 0 | $9.1M | 1999–2025 |
Significant events
Deadliest flash flood events in Louisiana
| Date | County | Scale | Deaths | Injuries |
|---|---|---|---|---|
| Aug 12, 2016 | Tangipahoa Parish | — | 2 | 0 |
| Aug 12, 2016 | St. Helena Parish | — | 2 | 0 |
| Aug 12, 2016 | East Baton Rouge Parish | — | 1 | 0 |
| Apr 27, 2011 | Ouachita Parish | — | 1 | 0 |
| Jun 6, 2019 | East Baton Rouge Parish | — | 1 | 0 |
| Apr 27, 2011 | Ouachita Parish | — | 1 | 0 |
| May 18, 2021 | Vermilion Parish | — | 1 | 0 |
| May 18, 2021 | East Baton Rouge Parish | — | 1 | 0 |
| Mar 10, 2016 | Ouachita Parish | — | 1 | 0 |
| Dec 31, 2006 | Washington Parish | — | 1 | 0 |