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1 RiversideCA.gov
ANNUAL WATER SUPPLY AND
DEMAND ASSESSMENT
City Council
June 14, 2022
Public Utilities
RiversideCA.gov
2 1. The California Water Code Section 10632.1 requires that urban water suppliers prepare an Annual Assessment and submit an Annual Shortage Report to the California Department of Water Resources (DWR) by July 1 of every year starting in 2022 and every year after.
2. The Annual Assessment and associated Annual Shortage Report are to be conducted by water agencies based on the procedures detailed in their adopted Water Shortage Contingency Plan (WSCP) and the recommendations provided by the DWR Annual Water Supply and Demand Assessment (AWSDA) Guidance.
3. The Annual Water Supply & Demand Assessment (AWSDA) Final guidance was published on April 19, 2022.
BACKGROUND
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3 The purpose of the Annual Assessment is to:
1.Evaluate water supply reliability for the current year and one dry year and;
2.Generate and submit an Annual Shortage Report on
the Annual Assessment and results regarding their
anticipated shortages to DWR by July 1 every year
starting July 1, 2022.
BACKGROUND
RiversideCA.gov
4 Riverside’s Available Water Supply Projection in 2022-2023:
1. RPU’s Annual Assessment reflects the available water supply from groundwater extraction rights i nt h eS a nB e r n a r d i n oB a s i nA r e a (SBBA), Riverside Basin, and the Ri alto-Colton Basin, as shown on the next slide;
2. RPU also has an agreement with W estern Municipal Water District (WMWD) to access up to 21,700 Acre Feet per Year (AFY) of imported water; and
3. Recycled water for non-potable uses which is supplied from the City of Riverside Regional Water Quality Control Plant that satisfies the need of up to 800 AFY.
DISCUSSION
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5 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 Extraction
Extraction/Export Rights
85,773 AFY Total
RiversideCA.gov
6 PROJECTED WATER SUPPLIES
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7 ACTUAL CUSTOMER WATER USE
RiversideCA.gov
8 The total potable and non potable monthly water demand projections for RPU from July 2022 to June 2023 is estimated:
1. By adding all the next year projection water needs for all demand categories and, 20% reduction per RPU WSCP
stage 3 as requested by DWR.
2. Based on the monthly projected weather and growth.
RIVERSIDE’S WATER DEMAND IN 2022 AND 2023
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9 PROJECTED WATER SUPPLY VS. WATER DEMAND
0 2,000
4,000
6,000
8,000
10,000
12,000
14,000
Jul-22 Aug-22 Sep-22 Oct-22 Nov-22 Dec-22 Jan-23 Feb-23 Mar-23 Apr-23 May-23 Jun-23 Acre-Feet
Demand projection Supply Projection
Supply Projection without purchasing imported water Anticipated projected demand + 20% reduction RiversideCA.gov
10 Status Completion of RPU’s AWSDA Required Submittal
REQUIRED SUBMITTALS TO DWR FOR THE AWSDA
Report Topic
Table 1 Annual Assessment Information
Table 2 Key Data - Demands, containing estimated unconstrained demand from July – June of next year
Table 3 Key Data - Supplies, containing estimated available supplies from July – June of next year Table 4 Annual Water Shortage Assessment, showing a summary of monthly supply/demand balances and shortages and results of planned actions.
Table 5 Planned Water Shortage Response Actions, containing information on planned water shortage response actions (if any)
RPU
Methodology
Optional attachments to include details on implementing the procedures that took place this year. Information may consist of descriptions of the steps followed, data sources considered, methodologies used, and the decision-making process
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11 Priority No. 4 Environmental Stewardship
Goal 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
RiversideCA.gov
12 That the City Council receive a report and adopt
Riverside’s Annual Water Supply and Demand
Assessment.
RECOMMENDATION
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