September 15, 2023
Category: AZ Surface Water Status
The following table summarizes the status of Arizona’s key surface water supplies for the month of September.
| 2023 | 2022 | 2021 | 2020 | 2019 | |
|---|---|---|---|---|---|
| COLORADO RIVER SYSTEM | |||||
| Lake Powell (% full) | 38 | 25 | 31 | 48 | 56 |
| Lake Mead (% full) | 34 | 28 | 35 | 40 | 38 |
| Total Colorado System (% full) | 44 | 28 | 39 | 50 | 54 |
| Lake Mead Elevation (ft msl) | 1,066 | 28 | 1,068 | 1,084 | 1,083 |
| Tier 1 Shortage Declaration Elevation (ft msl) | 1,075 | 28 | 1,075 | 1,075 | 1,075 |
| Tier 2a Shortage Declaration Elevation (ft msl) | 1,050 | 28 | 1,050 | 1,050 | 1,050 |
| Tier 2b Shortage Declaration Elevation (ft msl) | 1,045 | 28 | 1,045 | 1,045 | NA |
| Tier 3 Shortage Declaration Elevation (ft msl) | 1,025 | 28 | 1,025 | 1,025 | 1,025 |
| Lake Powell Elevation (ft msl) | 3,574 | 28 | 3,548 | 3,600 | 3,617 |
| Minimum Power Generation Elevation (ft msl) | 3,490 | 28 | 3,490 | 3,490 | 3,490 |
| Upper Basin Water Year Precipitation to Date (% of average) | 115 | 28 | 82 | 80 | 114 |
| Upper Basin Current Snowpack (% of average) | N/A | N/A | N/A | N/A | N/A |
| SALT / VERDE RIVER SYSTEM | |||||
| Salt River Reservoirs (% full) | 90 | 69 | 74 | 88 | 72 |
| Verde River Reservoirs (% full) | 66 | 33 | 51 | 58 | 54 |
| Total Salt / Verde System (% full) | 87 | 65 | 71 | 84 | 70 |
| Salt/Verde Water Year Precipitation to Date (% of average) | 133 | 94 | 78 | 86 | 102 |
| Salt/Verde Current Snowpack Level (% of average) | N/A | N/A | N/A | N/A | N/A |
| CAP STORAGE | |||||
| Lake Pleasant (% full) | 67 | 59 | 56 | 51 | 60 |
Data compiled from Central Arizona Water Conservation District, U.S. Bureau of Reclamation, and Salt River Project
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