24-Month Study
24-month study
Each month, the U.S. Bureau of Reclamation releases a 24-month study, or shortage analysis, projecting water levels at the major Colorado River reservoirs for the proceeding two years under the most probable conditions for system inflow and releases.
Under guidelines adopted in 2007, the projections in the August 24-month study govern the release from Lake Powell to Lake Mead for the coming year.
Arizona has been planning and preparing for such a condition for decades and has led the nation in conservation efforts and long-term water management, including storing millions of acre-feet of water underground as a backup supply.
CAP and its partners are collaborating with the federal government and all Colorado River water users, including via the Arizona Reconsultation Committee, to seek creative management solutions in the short term and supply augmentation measures in the long term.