Status of Arizona surface water supplies: October 2021

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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