The following table summarizes the status of Arizona’s key surface water supplies for the month of September.
| 2021 | 2020 | 2019 | 2018 | 2017 | |
|---|---|---|---|---|---|
| COLORADO RIVER SYSTEM | |||||
| Lake Powell (% full) | 31 | 48 | 56 | 47 | 61 |
| Lake Mead (% full) | 35 | 40 | 38 | 38 | 39 |
| Total Colorado System (% full) | 39 | 50 | 54 | 48 | 56 |
| Elevation (Lake Mead; ft msl) | 1,068 | 1,084 | 1,083 | 1,079 | 1,081 |
| 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) | 3,548 | 3,600 | 3,617 | 3,596 | 3,630 |
| Upper Basin Water Year Precipitation to Date (% of average) | 82 | 80 | 114 | 70 | 108 |
| Upper Basin Current Snowpack (% of average) | NA | NA | NA | NA | NA |
| SALT / VERDE RIVER SYSTEM | |||||
| Salt River Reservoirs (% full) | 74 | 88 | 72 | 50 | 68 |
| Verde River Reservoirs (% full) | 51 | 58 | 54 | 30 | 61 |
| Total Salt / Verde System (% full) | 71 | 84 | 70 | 48 | 67 |
| Salt/Verde Water Year Precipitation to Date (% of average) | 78 | 86 | 102 | 55 | 107 |
| Salt/Verde Current Snowpack Level (% of average) | NA | NA | NA | NA | NA |
| CAP STORAGE | |||||
| Lake Pleasant (% full) | 56 | 51 | 60 | 31* | 53* |
*September 2017-2018 Lake Pleasant storage estimated based on lake level
Data compiled from Central Arizona Water Conservation District, U.S. Bureau of Reclamation, and Salt River Project