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Celebrating 50 Years of Arizona’s Water Conservation Project
Central Arizona Project photo
Central Arizona Project photo
Forty years after its completion, the engineering feat still draws people from all over the globe who come to study and marvel at it.
More than 5 million people, or more than 80 percent of the state’s population, live in the counties — Maricopa, Pima and Pinal counties — where CAP water is delivered.
By Lori Tobias CEG CORRESPONDENT
Fifty years ago, the act authorizing the Central Arizona Water Conservation Project was signed, setting in motion a project that would take 20 years to complete and would dramatically improve life in the Arizona desert. Forty years after its completion, the engineering feat still draws people from all over the globe who come to study and marvel at it. Designed to bring 1.5 million acre-ft. of water from the Colorado River to Central and Southern Arizona annually, the Central Arizona Project (CAP) is
Arizona’s single largest resource for renewable water supplies. More than 5 million people, or more than 80 percent of the state’s population, live in the counties — Maricopa, Pima and Pinal counties — where CAP water is delivered. The 336-mi. long system of aqueducts, tunnels, pumping plants and pipelines carries water from Lake Havasu near Parker to the southern boundary of the San Xavier Indian Reservation southwest of Tucson. “The scope is fairly large … and there’s a significant elevation change along the 336-mile route,” said Tom McCann, deputy general manager. “The terminus of the project is 2,200 feet above sea
Central Arizona Project photo
Fifty years ago, the act authorizing the Central Arizona Water Conservation Project was signed, setting in motion a project that would take 20 years to complete and would dramatically improve life in the Arizona desert.
level. Where we take water off the river is 400 ft. We have a series of lifts. Think about the Panama Canal, moving from one spot to another, raising or lowering the water level as you work your way across. We’re kind of like that, but all uphill. We have nearly 3,000 feet of lift all together. The water is pumped up, then flows by gravity. The distance between the pumping plants varies. Some are just a handful of miles. The canal between pumping plants is designed to have a drop of six inches a mile.” see CAP page 6