Status of Arizona surface water supplies: November 2021

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The following table summarizes the status of Arizona’s key surface water supplies for the month of November.

2021 2020 2019 2018 2017
COLORADO RIVER SYSTEM
Lake Powell (% full) 29 45 54 44 59
Lake Mead (% full) 34 39 39 38 39
Total Colorado System (% full) 38 47 52 46 55
Elevation (Lake Mead; ft msl) 1,066 1,082 1,083 1,080 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) 3,543 3,591 3,613 3,588 3.626
Upper Basin Water Year Precipitation to Date (% of average) 115 51 66 119 58
Upper Basin Current Snowpack (% of average) 83 87 NA NA NA
SALT / VERDE RIVER SYSTEM
Salt River Reservoirs (% full) 72 84 70 49 64
Verde River Reservoirs (% full) 41 37 37 29 46
Total Salt / Verde System (% full) 68 78 66 47 62
Salt/Verde Water Year Precipitation to Date (% of average) 99 50 14 146 1
Salt/Verde Current Snowpack Level (% of average) NA NA NA NA NA
CAP STORAGE
Lake Pleasant (% full) 68 65 72 55* 63*

*November 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