Status of Arizona surface water supplies: April 2018

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

2018 2017 2016 2015 2014
COLORADO RIVER SYSTEM
Lake Powell (% full) 52 48 45 45 39
Lake Mead (% full) 40 41 38 40 46
Total Colorado System (% full) 51 50 48 48 47
Elevation (Lake Mead; ft msl) 1,085 1,087 1,080 1,084 1,102
First Shortage Declaration Elevation (ft msl) 1,075 1,075 1,075 1,075 1,075
Elevation (Lake Powell; ft msl) 3,610 3,598 3,591 3,591 3,575
Upper Basin Water Year Precipitation to Date (% of average) 74 121 94 75 101
Upper Basin Current Snowpack (% of average) 75 120 95 61 112
SALT / VERDE RIVER SYSTEM
Salt River Reservoirs (% full) 63 74 60 57 58
Verde River Reservoirs (% full) 31 89 43 63 49
Total Salt / Verde System (% full) 59 76 58 58 57
Salt/Verde Water Year Precipitation to Date (% of average) 31 122 81 74 52
Salt/Verde Current Snowpack Level (% of average) N/A N/A N/A 61 N/A
CAP STORAGE
Lake Pleasant (% full) 87 94 90 92 83
Roosevelt Lake Exchange Storage (AF)* <200 <200 16,000 31,000 31,000

*Approximate exchange volume remaining as of December that year.

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