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 | De Soto Parish | 55 | 1 | $110K | 1996–2024 |
| #13 | Sabine Parish | 55 | 0 | $2.1M | 1996–2025 |
| #14 | Lafayette Parish | 49 | 0 | $574.9M | 1996–2025 |
| #15 | Morehouse Parish | 44 | 0 | $7.8M | 1999–2025 |
| #16 | Richland Parish | 44 | 0 | $21.9M | 1996–2024 |
| #17 | Grant Parish | 44 | 0 | $270K | 1999–2024 |
| #18 | Union Parish | 42 | 0 | $310K | 1996–2023 |
| #19 | Rapides Parish | 42 | 2 | $22.1M | 1998–2025 |
| #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 | St. Helena Parish | — | 2 | 0 |
| Aug 12, 2016 | Tangipahoa Parish | — | 2 | 0 |
| Apr 14, 2015 | Lafourche Parish | — | 1 | 0 |
| Apr 13, 2019 | Ouachita Parish | — | 1 | 0 |
| May 18, 2021 | West Baton Rouge Parish | — | 1 | 0 |
| Mar 9, 2016 | Bienville Parish | — | 1 | 1 |
| May 18, 2015 | Lincoln Parish | — | 1 | 2 |
| Oct 22, 2009 | Rapides Parish | — | 1 | 0 |
| Apr 5, 1997 | Caddo Parish | — | 1 | 0 |
| Mar 13, 2016 | Natchitoches Parish | — | 1 | 2 |