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WATER RESOURCES UPDATE City Council Workshop January 25, 2022 • For information and discussion • We will cover: – Colorado River Agreements – Colorado River Conditions – 500 Plus Plan – Glendale is Prepared – Next Steps 2 Purpose Water Resources Update Colorado River System Agreements 3 2007 Interim Guidelines for Lower Basin Shortages and Coordinated Operations for Lake Powell and Lake Mead 2019 Colorado River Basin Drought Contingency Plan (DCP) 2021 500 Plus Plan (New) All plans are cumulative in cuts and are interconnected under the 2007 Interim Guidelines that operate through 2026 Water Resources Update Colorado River System Agreements 4 Renegotiation of the 2007 Interim Guidelines by 2026 is underway, but has stalled due to: • Bureau of Reclamation’s 2021 August 24-month study shows that Lake Mead has the chance to drop below elevation 1,030 feet above mean sea level within the 24- month period. This triggers a certain provision in the Drought Contingency Plan. • The 500 Plus Plan was developed by the Lower Basin States of AZ, CA, and NV along with the U.S. Department of Interior Colorado River Conditions 5 Conditions in Lake Mead and Lake Powell: • Lowest levels in both reservoirs since filled • Chance of Lake Powell dropping below Minimum Power Pool of 3,490 feet above mean sea level by July 2022 • Chance of power generation loss at Lake Mead at elevation 1,050 feet above mean sea level As of January 3, 2022 28 % Full 6.7 MAF 34 % Full 8.9 MAF 3,537 1,066 Colorado River Conditions 6 Conditions in Lake Mead and Lake Powell: • In December 2021, current total storage in both Lake Mead and Lake Powell is less than 16.0 million acre-feet (system is ~30% full) • In 2019, the reservoirs were half-full • Lake Powell is integral to Lake Mead due to its annual transfer of water into Lake Mead (under the 2007 Interim Guidelines) • Typical transfer between Lake Powell and Lake Mead is 8.23 million acre-feet. Transfer in 2022 will be 7.43 million acre-feet, and future transfers may be less. 7 500 Plus Plan Details • To help protect Lake Mead’s water elevation from dropping below 1,020 feet above mean sea level, it is estimated that an additional 500,000 acre-feet needs to be saved each year in the reservoir from 2022-2026 • To pay for the water reductions, Lower Basin stakeholders plan to contribute $100 million each year from 2022-2026. (AZ, CA, NV, and U.S.) • Arizona monetary portion to come from state funds 2022 Target Conservation Volumes (AF) 8 500 Plus Plan Details Glendale is participating in the 500 Plus Plan: • Glendale is contributing 350 acre-feet of our lowest priority CAP water • Compensated Conservation will be at $261 per acre-foot • Glendale was recognized at the annual Colorado River Water Users Association conference for our effort • Glendale will likely be able to do the same volume next year or a little more • This contribution does not affect our future water orders 9 Impact of 500 Plus Plan Glendale will pay more for our CAP water: • Reduced deliveries from the 500+ Plan could have resulted in a rate increase of ~$11/AF in 2022 • The CAP Board approved use of $5 million of property tax revenues, reducing the water rate increase from the 500 Plus Plan down to ~$6.50/AF (an additional cost totaling $145,000 for Glendale) • This will bring the final CAP water rate to $235.50/AF in 2022. 10 Future of Glendale’s Colorado River Supply Glendale has and is still preparing: • We are approaching 200,000 acre-feet of water stored underground. This is approximately 4 years of supply for Glendale. • Projects for drilling new wells are underway • We are working with SRP on new supply projects including the Bartlett Dam modification and use of the Flood Control Space in Roosevelt Lk. • Conservation will continue to be an important element • Anticipate CAP and SRP water rates to increase 11 Glendale’s Water Resources • We have our 100-year Designation of Assured Water Supply • Our SRP supply is strong • Glendale will be given water or credits from the Arizona Water Banking Authority for a limited number of years to make up for any shortage of Colorado River water • We have a strong water portfolio and will continue to improve upon it • Working with Public Affairs on messaging • Bureau of Reclamation’s 24- month study in April 2022 will indicate expected conditions in both Lake Mead and Lake Powell for 2023 • Working on optimizing Colorado River water supplies throughout the city 12 Next Steps 13 Questions?