The following table summarizes the status of Arizona’s key surface water supplies for the month of October.
| 2021 | 2020 | 2019 | 2018 | 2017 | |
|---|---|---|---|---|---|
| COLORADO RIVER SYSTEM | |||||
| Lake Powell (% full) | 30 | 46 | 54 | 45 | 60 |
| Lake Mead (% full) | 34 | 39 | 39 | 38 | 39 |
| Total Colorado System (% full) | 38 | 48 | 53 | 47 | 55 |
| Elevation (Lake Mead; ft msl) | 1,067 | 1,083 | 1,084 | 1,079 | 1,082 |
| 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) | 3,545 | 3,594 | 3,616 | 3,592 | 3,628 |
| Upper Basin Water Year Precipitation to Date (% of average) | 155 | 24 | 15 | 239 | 81 |
| Upper Basin Current Snowpack (% of average) | NA | NA | NA | NA | NA |
| SALT / VERDE RIVER SYSTEM | |||||
| Salt River Reservoirs (% full) | 73 | 84 | 71 | 49 | 64 |
| Verde River Reservoirs (% full) | 52 | 52 | 54 | 33 | 56 |
| Total Salt / Verde System (% full) | 70 | 80 | 69 | 46 | 63 |
| Salt/Verde Water Year Precipitation to Date (% of average) | 290 | 8 | 19 | 215 | 6 |
| Salt/Verde Current Snowpack Level (% of average) | NA | NA | NA | NA | NA |
| CAP STORAGE | |||||
| Lake Pleasant (% full) | 58 | 57 | 65 | 44 | 57 |
Data compiled from Central Arizona Water Conservation District, U.S. Bureau of Reclamation, and Salt River Project