CAP History Makers

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Howard Wuertz
Howard Wuertz
Grady Gammage, Jr.
Grady Gammage Jr CAP History
Bruce Babbitt
Bruce Babbit CAP History
Stewart Udall
History Moments Small February 2
John Rhodes
John Rhodes CAP History
Carl Hayden
History Minute September 1
History Minute September 2
CAP 50th Anniversary Logo

On September 30, 1968, President Lyndon B. Johnson, the 36th President of the United States, signed into law the Colorado River Basin Project Act. This law authorized the construction of what is today known as Central Arizona Project (CAP). The 336-mile system brings Colorado River water to central and southern Arizona and is the state’s single largest renewable water supply.


“Next to the air we breathe, water is our most precious resource.”
President Lyndon B. Johnson, Sept. 30, 1968


Hear from CAP stakeholders regarding the value of CAP water over the past 50 years and, most importantly, over the next 50 years and beyond.



“For two decades, the Colorado River has been the subject of unrelenting controversy and competing claims.”
CAP Leadership
CAP’s elected board and staff is responsible for protecting, preserving and enhancing what past generations were able to fund and build.
“This will be one of the largest reclamation projects ever authorized in any single piece of legislation.”

CAP Infrastructure
Central Arizona Project is a 336-mile long system of aqueducts, tunnels, pumping plants and pipelines delivering Colorado River water to central and southern Arizona.
“For an entire region of America, this great river, therefore, is the lifeline of survival, the lifeline of growth, of prosperity and of hope.”
CAP Impact
More than 30 million people rely on Colorado River water every day throughout the basin.