What percentage of Arizona's water supply comes from the Colorado River?

Arizona relies heavily on the Colorado River for its water supply, with approximately 40% of the state's water coming from this vital water source. The Colorado River is crucial for meeting the water needs of various sectors in Arizona, including agriculture, municipal use, and environmental needs. This river provides water through a network of reservoirs and aqueducts, making it an essential component of Arizona's overall water management strategy.

Other percentages listed, such as 20%, 30%, and 50%, do not accurately reflect the significant role that the Colorado River plays in Arizona's water supply system. The correct figure helps underline the importance of interstate water agreements and the state's efforts to manage and conserve this important resource effectively. Understanding this percentage is pivotal for grasping Arizona’s water sustainability challenges and strategies.