Item 28 - Urban Water Management Plan and Water Shortage Contingency Plan

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Santa Ana 2020 Urban Water Management Plan arcadis.com 6-12 depends on hydrologic conditions and any regulatory requirements restricting MET’s ability to export water for storage. During wet years, MET has the discretion to use to program to store portions of its SWP supplies which are in excess, and during dry years, the Arvin-Edison Water Storage District returns MET’s previously stored water to MET by direct groundwater pump-in or by exchange of surface water supplies. Antelope Valley-East Kern (AVEK) Water Agency Exchange and Storage Program: Under the exchange program, for every two AF MET receives, MET returns 1 AF back to AVEK, and MET will also be able to store up to 30 TAF in the AVEK’s groundwater basin, with a dry-year return capability of 10 TAF. High Desert Water Bank Program: Under this program, MET will have the ability to store up to 280 TAF of its SWP Table A or other supplies in the Antelope Valley groundwater basin, and in exchange will provide funding for the construction of monitoring and production wells, turnouts from the California Aqueduct, pipelines, recharge basins, water storage, and booster pump facilities. The project is anticipated to be in operation by 2025. Kern-Delta Water District Storage Program: This groundwater storage program has 250 TAF of storage capacity, and water for storage can either be directly recharged into the groundwater basin or delivered to Kern-Delta Water District farmers in lieu of pumping groundwater. During dry years, the Kern-Delta Water District returns MET’s previously stored water to MET by direct groundwater pump-in return or by exchange of surface water supplies. Mojave Storage Program: MET entered into a groundwater banking and exchange transfer agreement with Mojave Water Agency that allows for the cumulative storage of up to 390 TAF. The agreement allows for MET to store water in an exchange account for later return. 6.2.4 Planned Future Sources Beyond the programs highlighted in Sections 6.2.1 through 6.2.3, MET continues to invest in efforts to meet its goal of long-term regional water supply reliability, focusing on the following:  Continuing water conservation  Developing water supply management programs outside of the region  Developing storage programs related to the Colorado River and the SWP  Developing storage and groundwater management programs within the Southern California region  Increasing water recycling, groundwater recovery, stormwater and seawater desalination  Pursuing long-term solutions for the ecosystem, regulatory and water supply issues in the California Bay-Delta (MET, 2021) Groundwater Historically, local groundwater has been the cheapest and most reliable source of supply for the City. The City draws water from the Basin. In FY 2019-20, the City relied on approximately 25,591 AFY –