In arid climates like Arizona's, aquifers take thousands of years to fill, but modern technology enables humans to use up groundwater far faster than nature replenishes it. The Arizona Groundwater Dashboard provides insights on groundwater demand and supply in each of the state's 51 groundwater basins.
The Water Blueprint map provides comprehensive information about Arizona water resources and policy with over 50 data layers to facilitate holistic understanding and planning.
Stream adjudications are legal proceedings to determine and catalogue who has rights to use water from a river or stream. Arizona's two stream adjudication have been ongoing for decades and parties include cities, towns, tribes, farmers, ranchers, mines, national parks, state parks, homeowners and others. Learn more about the stream adjudications and what it will take for the state to complete them.
Learn the story of Arizona’s water, past and present: where it comes from, how it’s used and what challenges lie ahead.
This story map connects our water supply in Arizona to the landscapes we depend on - both in the natural and built environments. Learn about the relationships between land and water through forest health, wildfire, the built environment, climate change, and biodiversity.
The Central Arizona Project (CAP) was, at the time of its completion in 1993, the largest and most expensive water transfer project ever built in the United States, with a capacity to deliver the state’s single largest renewable water supply. Dubbed central Arizona’s "aquifer rescue plan," the CAP is also one of the state’s most celebrated bipartisan achievements. The scale and significance of the CAP warrant a look back to see where and how its water has been used since the first CAP delivery in 1985.
Central Arizona cities, towns and industries that rely on water conveyed via the Central Arizona Project anticipate future cuts in response to declining Colorado River supplies. But cuts will not be felt equally across all users. This tool provides reasonable estimates of how Colorado River shortages will impact individual communities and other entities.
Many cities, Tribes and industries in Maricopa, Pinal and Pima Counties use Colorado River water delivered via the Central Arizona Project canal. These water users face a likelihood of cuts to their Colorado River supplies, but the extent of cuts to any particular user varies depending on the priority pools to which they have access. This tool shows how each of these users' access to Colorado River water will be impacted by future cuts.
Understand how Colorado River supply cuts will impact residential water use, groundwater pumping, utility costs, urban growth and economic development in central Arizona.
The prospect of deeper cuts of Colorado River supplies looms for Arizona water users. This report explains what those cuts will mean for water availability, water prices, growth and the economy.