UWM Plan - Municipal Water District of Orange County

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Section 3 Water Sources and Supply Reliability • Desert Water Agency/CVWD Other SWP Deliveries – Since 2008, Metropolitan has provided Desert Water Agency and CVWD written consent to take delivery from the SWP facilities non-SWP supplies separately acquired by each agency. • Diamond Valley Lake – The completion and filling of Diamond Valley Lake between 1999 and 2003 marked the most important achievement with respect to protecting Southern California against a SWP system outage. The lake can hold up to 810 TAF that provides Southern California with a six-month emergency water supply as well as carryover and regulatory storage. • Inland Feeder Project – The Inland Feeder project is a high-capacity water delivery system designed to increase Southern California’s water supply reliability. The project will take advantage of large volumes of water when available from northern California, depositing it in surface storage reservoirs, such as Diamond Valley Lake, and local groundwater basins for use during dry periods and emergencies. In addition to those actions discussed above, Metropolitan adopted a Delta Action Plan in June 2007 which includes a long-term Delta plan. The Delta Action Plan provides a framework for staff to pursue actions with other agencies and stakeholders to build a sustainable Delta and reduce conflicts between water supply conveyance and the environment. The plan aims to prioritize immediate short-term actions to stabilize the Delta while an ultimate solution is selected, and mid-term steps to maintain the Bay-Delta while the long-term solution is implemented. Metropolitan also provided input to the Delta Vision Blue-Ribbon Task Force developed as part of the Governor’s Delta Vision process. After delivery of the Delta Vision recommendations, a package of bills was signed by the legislature in 2009, including SB 1 x7, which reformed Delta policy and governance. In evaluating the supply capabilities for the 2010 RUWMP, Metropolitan assumed a new Delta conveyance is expected to be operational by 2022 that would return supply reliability similar to 2005 condition, prior to supply restrictions imposed due to the Biological Opinions. Available Supplies on SWP Metropolitan’s current State Water Project (also known as California Aqueduct) program capabilities under average year, single dry year, and multiple dry year hydrologies are shown below in Table 3-2. Municipal Water District of Orange County 2010 Regional Urban Water Management Plan Final 3-14
Section 3 Water Sources and Supply Reliability Table 3-2: Metropolitan California Aqueduct Program Capabilities Source: Metropolitan 2010 RUWMP, Table 3-2 3.2.4. Central Valley/SWP Storage and Transfer Programs Storage is a major component of Metropolitan’s dry year resource management strategy. Metropolitan’s likelihood of having adequate supply capability to meet projected demands, without implementing its Water Supply Allocation Plan (WSAP), is dependent on its storage resources. Metropolitan endeavors to increase the reliability of supplies received from the California Aqueduct by developing flexible Central Valley storage and transfer programs. Over the years, Metropolitan has developed numerous voluntary Central Valley storage and transfer programs, aiming to develop additional dry-year water supplies. Background on SWP Transfers Metropolitan’s storage and transfer programs were established to augment SWP reliability in dry years. Metropolitan’s Board determined that the criteria for operating the SWP did not provide sufficient reliability to meet Metropolitan’s overall supply reliability objectives. Most recently, DWR’s estimates of SWP reliability capability show that SWP reliability under conditions similar to 1977, the driest year on record, could be significantly worse than earlier modeling indicated. Metropolitan estimates that currently in a single dry year similar to 1977, SWP deliveries in its service area would be about 134 TAF rather than the 418 TAF of “Table A” water previously estimated. Municipal Water District of Orange County 2010 Regional Urban Water Management Plan Final 3-15
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Municipal Water District of Orange
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Table of Contents Contents Executiv
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Table of Contents 6. Recycled Water
Page 7 and 8: Table of Contents List of Figures F
Page 9 and 10: Acronyms GAC GAP GMFP GPCD gpm GRF
Page 11 and 12: Message from the Board of Directors
Page 13 and 14: Executive Summary • Offer opportu
Page 15 and 16: Executive Summary When comparing su
Page 17 and 18: Executive Summary • Promoting par
Page 19 and 20: 1. Introduction 1.1. Urban Water Ma
Page 21 and 22: Section 1 Introduction • Long-ran
Page 23 and 24: Section 1 Introduction term by vote
Page 25 and 26: Section 1 Introduction For more tha
Page 27 and 28: Section 1 Introduction Orange Count
Page 29 and 30: Section 2 Water Demand 600,000 2.5
Page 31 and 32: Section 2 Water Demand Table 2-1: C
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Page 37 and 38: Section 2 Water Demand o 10 percent
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Page 45 and 46: 3. Water Sources and Supply Reliabi
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Page 57: State Water Project Programs and Lo
Page 71 and 72: 3.3.2. San Juan Basin Section 3 Wat
Page 79 and 80: 3.3.8. Recharge Facilities for OCWD
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Page 91 and 92: 4.2. BMP Implementation in MWDOC Se
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Section 4 Demand Management Measure
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Section 5 Water Supplies Contingenc
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6. Recycled Water 6.1. Agency Coord
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Section 6 Recycled Water outfalls a
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Section 6 Recycled Water IRWD’s r
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Section 6 Recycled Water IRWD Los A
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Section 6 Recycled Water OCWD Groun
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6.4.2. Indirect Potable Reuse Secti
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7. Future Water Supply Projects and
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Section 7 Future Water Supply Proje
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Section 8 UWMP Adoption Process Thi
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Section 8 UWMP Adoption Process Cit
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Appendices A. Urban Water Managemen
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CALIFORNIA WATER CODE DIVISION 6 PA
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and county, city, regional agency,
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(4) A detailed description and anal
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dated December 10, 2008, as it may
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the agencies participating in the p
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service area at the end of 5, 10, 1
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10631, that achieve water savings s
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"Memorandum of Understanding Regard
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Demand “Bump” Factors for 2010
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Table 1. Per-Capita Retail Water Us
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Appendix C California Urban Water C
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Agency: Municipal Water District of
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Urban Water Management Plan checkli
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Calif. Water No. UWMP requirement a
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Municipal Water District of Orange
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List of Tables and Figures TABLES T
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Section 2: Metropolitan Water Distr
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Section 3: Development Process In p
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MWDOC’s allocation plan. Moreover
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Base Period Interim Agricultural Wa
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Shortage Levels: The model allocate
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to 2008; in order to incorporate th
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Section 5: Plan Implementation This
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agencies and Board Committee member
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Tracking and Reporting In preparing
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It important to note, MWDOC does no
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Appendix A List of Acronyms: AF- Ac
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Appendix C MWDOC Growth Adjustment
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Appendix F Letters of Notification
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Appendix H Resolution of Adoption o
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8001 Irvine Center Drive, Suite 110
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UWM Plan - Municipal Water District of Orange County

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