May 16, 2025
Category: AZ Surface Water Status
The following table summarizes the status of Arizona’s key surface water supplies for the month of May.
| 2025 | 2024 | 2023 | 2022 | 2021 | |
|---|---|---|---|---|---|
| COLORADO RIVER SYSTEM | |||||
| Lake Powell (% full) | 33 | 34 | 27 | 24 | 35 |
| Lake Mead (% full) | 32 | 35 | 30 | 30 | 38 |
| Total Colorado System (% full) | 40 | 42 | 36 | 34 | 43 |
| Lake Mead Elevation (ft msl) | 1,060 | 1,069 | 1,052 | 1,053 | 1,095 |
| Tier 1 Shortage Declaration Elevation (ft msl) | 1,075 | 1,075 | 1,075 | 1,075 | 1,075 |
| Tier 2a Shortage Declaration Elevation (ft msl) | 1,050 | 1,050 | 1,050 | 1,050 | 1,050 |
| Tier 2b Shortage Declaration Elevation (ft msl) | 1,045 | 1,045 | 1,045 | 1,045 | 1,045 |
| Tier 3 Shortage Declaration Elevation (ft msl) | 1,025 | 1,025 | 1,025 | 1,025 | 1,025 |
| Lake Powell Elevation (ft msl) | 3,558 | 3,563 | 3,538 | 3,523 | 3,561 |
| Minimum Power Generation Elevation (ft msl) | 3,490 | 3,490 | 3,490 | 3,490 | 3,490 |
| Upper Basin Water Year Precipitation to Date (% of average) | 87 | 101 | 121 | 94 | 73 |
| Upper Basin Current Snowpack (% of average) | 50 | 105 | 155 | 68 | 53 |
| SALT / VERDE RIVER SYSTEM | |||||
| Salt River Reservoirs (% full) | 69 | 95 | 99 | 76 | 79 |
| Verde River Reservoirs (% full) | 53 | 70 | 99 | 33 | 32 |
| Total Salt / Verde System (% full) | 67 | 92 | 99 | 71 | 73 |
| Salt/Verde Water Year Precipitation to Date (% of average) | 53 | 96 | 155 | 70 | 51 |
| Salt/Verde Current Snowpack Level (% of average) | N/A | N/A | N/A | N/A | N/A |
| CAP STORAGE | |||||
| Lake Pleasant (% full) | 80 | 88 | 89 | 89 | 93 |
Data compiled from Central Arizona Water Conservation District, U.S. Bureau of Reclamation, and Salt River Project
