In 2023, the Colorado River will operate under a Lower Basin Tier 2a shortage condition, which effectively reduces Arizona's Colorado River entitlement by 592,000 acre-feet. Accordingly, there will be

The U.S. Secretary of the Interior has declared a Tier 2a shortage for Colorado River operations in 2023. This Tier 2a shortage will result in a substantial cut to Arizona’s share of the Colorado

The 2021 Joint Update is a collaborative effort among the AWBA, ADWR, CAP, RPAG and stakeholders to advance recovery planning. This Joint Update builds on previous planning efforts in the 2014 Plan

In 2022, the Colorado River will operate under a Lower Basin Tier 1 shortage condition, which effectively reduces Arizona's Colorado River entitlement by 512,000 acre-feet. Accordingly, there will be