Which of these is NOT a reason that the Central Arizona Project (CAP) was constructed?

The Central Arizona Project (CAP) was primarily constructed to serve significant water management needs in the region, including ensuring water availability for agricultural, municipal, and tribal uses. The reasons for its construction are closely tied to water supply challenges faced by Arizona, particularly in the Central Arizona region.

The development of urban and suburban areas, while important, is not specifically a primary purpose of the CAP. The project was initiated to address more immediate and critical water supply issues and to provide a dependable source of water – particularly from the Colorado River – to support agricultural irrigation and municipal needs. Thus, while urban growth is a natural outcome of having a reliable water supply, it was not a designated reason for the CAP’s construction.

In contrast, the other reasons, such as bringing Colorado River water to tribal groups, reducing reliance on groundwater for farming, and serving municipal users in Maricopa County, are aligned with the project's objectives. CAP was instrumental in distributing water to areas that could benefit from reduced groundwater extraction and increasing water reliability for both agricultural and urban populations.