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1 RiversideCA.gov1
RiversideCA.gov
2024-2025 ANNUAL WATER SUPPLY AND DEMAND ASSESSMENTCity CouncilJune 11, 2024Public Utilities RiversideCA.gov2
1. The California Water Code Section 10632.1 requires an AnnualAssessment and Annual Shortage Report to the California Departmentof Water Resources (DWR) by July 1 of each year since 2022. 2. The assessment and report are based on the procedures andrecommendations provided by the DWR. 3. Final guidance documents were published in April 2022, followed bythe publication of a Guidance addendum on May 10, 2023. BACKGROUND1 2 5/23/2024
2 RiversideCA.gov3
The purpose of the Annual Assessment is to:1. Evaluate Water Agencies on their water supply reliability forthe current year and including one dry year.2. Generate and submit an Annual Shortage Report on theAnnual Assessment and results every year regarding theiranticipated shortages to DWR by July 1. BACKGROUND RiversideCA.gov4
Riverside’s Available Water Supply Projection in 2024-2025:1. The Annual Assessment reflects the available water supply fromgroundwater extraction rights, as shown on the next slide.2. Considers the available capacity from groundwater supply wellsduring high demand and conveyance capability.3. An agreement with Western Municipal Water District (WMWD)provides access to 21,700 acre feet per year (AFY) of importedwater.4. Recycled water for non-potable uses meets the need of up to 800AFYDISCUSSION3 4 5/23/2024
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CURRENT WATER SUPPLIES
Bunker Hill•55,263 AFY Export
Colton •2,728 AFY Export
Riverside North•10,902 AFY Export
Riverside South•16,880 AFY ExtractionExtraction/Export Rights85,773 AFY Total RiversideCA.gov6
PROJECTED WATER SUPPLIES24/25Reasonably Available VolumeAdditional Detail on Water SupplyWater supply55,263Bunker HillGroundwater10,902Riverside NorthGroundwater16,880Riverside SouthGroundwater2,728Rialto- ColtonGroundwater800RWQCPRecycledwater21,700From WMWDPurchased or imported water108,273Total:5 6 5/23/2024
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ACTUAL CUSTOMER WATER USEtt 2023 2022 2021 2020 2019 2018 66,840 81,481 81,045 81,197 73,127 80,816 Potable and Non-Potable (AF) 155.44 205.7 174 141 143 187 Recycled Water (AF) 66,996 81,687 81,219 81,338 73,270 81,003 Total Water Use (AF) RiversideCA.gov8
Estimation of the total potable and non-potable monthly water demandprojections from July 2024 to June 2025 :1. By adding all the next year’s projected water needs for all demandcategories.2. Considering the monthly projected weather and growth.RIVERSIDE’S WATER DEMAND IN 2024 AND 20257 8 5/23/2024
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PROJECTED WATER SUPPLY VS. WATER DEMAND As of 2024, RPU can meet all current demands with local groundwater suppliesand with available groundwater capacity during the high demand season.02,0004,0006,0008,00010,00012,00014,000Jul-24 Aug-24 Sep-24 Oct-24 Nov-24 Dec-24 Jan-25 Feb-25 Mar-25 Apr-25 May-25 Jun-25Acre FeetSupply projectionSupply projection without purchasingProjected potable demand RiversideCA.gov10
Status Completion of RPU’s AWSDA Required SubmittalREQUIRED SUBMITTALS TO DWR FOR THE AWSDA Report TopicAnnual Assessment InformationTable 1Key Data - Demands, containing estimated unconstrained demand from July – June of nextyearTable 2Key Data - Supplies, containing estimated available supplies from July – June of next yearTable 3Annual Water Shortage Assessment, showing a summary of monthly supply/demandbalances and shortages and results of planned actions.Table 4Planned Water Shortage Response Actions, containing information on planned watershortage response actions (if any)Table 5Optional attachments to include details on implementing the procedures that took place thisyear. Information may consist of descriptions of the steps followed, data sources considered,methodologies used, and the decision-making processRPU Methodology 9 10
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Priority No. 4 Environmental StewardshipGoal No. 4.2 – Sustainably manage local water resources to maximize reliability and advance water reuse to ensure safe, reliable, and affordable water to our community.Cross-Cutting Threads
STRATEGIC PLAN ALIGNMENT
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That the City Council receive and adopt Riverside’s2024-2025 Annual Water Supply and DemandAssessment.RECOMMENDATION11 12