Status of Arizona surface water supplies: April 2021

Posted on by

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

2021 2020 2019 2018 2017
COLORADO RIVER SYSTEM
Lake Powell (% full) 36 48 37 52 48
Lake Mead (% full) 39 44 42 40 41
Total Colorado System (% full) 44 52 45 51 50
Elevation (Lake Mead; ft msl) 1,083 1,098 1,090 1,085 1,087
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) 3,565 3,600 3,569 3,610 3,598
Upper Basin Water Year Precipitation to Date (% of average) 73 90 119 74 121
Upper Basin Current Snowpack (% of average) 69 105 130 75 120
SALT / VERDE RIVER SYSTEM
Salt River Reservoirs (% full) 82 98 77 63 74
Verde River Reservoirs (% full) 32 99 96 31 89
Total Salt / Verde System (% full) 75 98 80 59 76
Salt/Verde Water Year Precipitation to Date (% of average) 51 106 127 31 122
Salt/Verde Current Snowpack Level (% of average) N/A N/A 43 N/A N/A
CAP STORAGE
Lake Pleasant (% full) 93 95 93 87 94

Data compiled from Central Arizona Water Conservation District, U.S. Bureau of Reclamation, and Salt River Project