405
Recorded events
15
Counties affected
12
Direct deaths
$41.6M
Property damage
Arizona flood history: 405 recorded events across 15 counties between 1996 and 2025.
Decade by decade
Arizona flood history by decade
The 2020s are the busiest decade on record with 135 reported flood events across Arizona. 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 Arizona
| Rank | County | Events | Deaths | Damage | Span |
|---|---|---|---|---|---|
| #1 | Maricopa County | 81 | 4 | $9.5M | 1998–2025 |
| #2 | Coconino County | 47 | 0 | $54K | 1996–2025 |
| #3 | Pima County | 43 | 1 | $7.1M | 1996–2025 |
| #4 | Mohave County | 41 | 0 | $5.1M | 1998–2025 |
| #5 | Yavapai County | 32 | 0 | $501K | 1996–2023 |
| #6 | Navajo County | 28 | 1 | $1K | 1996–2025 |
| #7 | Pinal County | 26 | 0 | $9.0M | 1998–2025 |
| #8 | Gila County | 22 | 6 | $346K | 1996–2025 |
| #9 | Yuma County | 16 | 0 | $61K | 1998–2025 |
| #10 | Cochise County | 14 | 0 | $2.4M | 1997–2025 |
| #11 | Apache County | 9 | 0 | $0 | 1996–2025 |
| #12 | La Paz County | 8 | 0 | $5.2M | 1999–2024 |
| #13 | Greenlee County | 5 | 0 | $300K | 2000–2022 |
| #14 | Graham County | 3 | 0 | $25K | 2000–2022 |
| #15 | Santa Cruz County | 3 | 0 | $25K | 2000–2016 |
Significant events
Deadliest flood events in Arizona
| Date | County | Scale | Deaths | Injuries |
|---|---|---|---|---|
| Nov 29, 2019 | Gila County | — | 3 | 0 |
| Apr 1, 2023 | Maricopa County | — | 2 | 0 |
| Mar 21, 2023 | Gila County | — | 2 | 0 |
| Mar 8, 2013 | Maricopa County | — | 1 | 0 |
| Mar 4, 2023 | Maricopa County | — | 1 | 0 |
| Mar 22, 2023 | Navajo County | — | 1 | 0 |
| Sep 7, 2012 | Pima County | — | 1 | 1 |
| Dec 7, 2019 | Gila County | — | 1 | 0 |