What role does the CAP play in Arizona's overall water resource management?

The Central Arizona Project (CAP) plays a critical role in Arizona's water resource management by decreasing reliance on groundwater. The CAP is designed to deliver Colorado River water to various parts of the state, particularly where groundwater use has historically been high. By providing a sustainable source of surface water, the CAP helps to replenish and protect groundwater resources that are vital for long-term water security in the region.

Groundwater in Arizona is finite and has been over-extracted in many areas, leading to depletion and land subsidence. The introduction of CAP water allows for reduced dependency on rather than reliance solely on this groundwater supply, ultimately promoting better water conservation practices. This shift is essential for managing Arizona's water scarcity, especially in the context of increasing population and climate impacts.

The other options do not accurately reflect the role of the CAP in water management. The project does not promote agricultural use over urban needs; rather, it serves various sectors. It also does not eliminate the need for water conservation, as conservation remains vital in all areas of water management. Finally, the CAP does not restrict surface water access; it enhances access to surface water, particularly for areas that previously relied heavily on groundwater.