The following table summarizes the status of Arizona’s key surface water supplies for the month of April.
| 2021 | 2020 | 2019 | 2018 | 2017 | |
|---|---|---|---|---|---|
| COLORADO RIVER SYSTEM | |||||
| Lake Powell (% full) | 36 | 48 | 37 | 52 | 48 |
| Lake Mead (% full) | 39 | 44 | 42 | 40 | 41 |
| Total Colorado System (% full) | 44 | 52 | 45 | 51 | 50 |
| Elevation (Lake Mead; ft msl) | 1,083 | 1,098 | 1,090 | 1,085 | 1,087 |
| DCP “Tier Zero” Declaration Elevation (ft msl) | 1,090 | 1,090 | NA | NA | NA |
| Tier 1 Shortage Declaration Elevation (ft msl) | 1,075 | 1,075 | 1,075 | 1,075 | 1,075 |
| Elevation (Lake Powell; ft msl) | 3,565 | 3,600 | 3,569 | 3,610 | 3,598 |
| Upper Basin Water Year Precipitation to Date (% of average) | 73 | 90 | 119 | 74 | 121 |
| Upper Basin Current Snowpack (% of average) | 69 | 105 | 130 | 75 | 120 |
| SALT / VERDE RIVER SYSTEM | |||||
| Salt River Reservoirs (% full) | 82 | 98 | 77 | 63 | 74 |
| Verde River Reservoirs (% full) | 32 | 99 | 96 | 31 | 89 |
| Total Salt / Verde System (% full) | 75 | 98 | 80 | 59 | 76 |
| Salt/Verde Water Year Precipitation to Date (% of average) | 51 | 106 | 127 | 31 | 122 |
| Salt/Verde Current Snowpack Level (% of average) | N/A | N/A | 43 | N/A | N/A |
| CAP STORAGE | |||||
| Lake Pleasant (% full) | 93 | 95 | 93 | 87 | 94 |
Data compiled from Central Arizona Water Conservation District, U.S. Bureau of Reclamation, and Salt River Project