Final Report, 2010 Urban Water Management Plan - Culver City

Significant additional supply reliability detail may be obtained from the WBMWD 2010 UWMPand Metropolitan’s 2010 Regional Urban Water Management Plan.6.1.1.1 Metropolitan Supply ReliabilityThis section presents a brief discussion of the source reliability of Metropolitan’s primary watersupply sources: imported water supply from the Colorado River and the State Water Project,and Metropolitan’s plans to ensure a reliable water supply into the future. Metropolitan maintainsa diverse portfolio of water sources including surface water supply, aquifer recharge andrecovery, desalination, and recycled water. The two primary components of Metropolitan’s watersupplies are also the most variable:• Colorado River Supply: Metropolitan owns and operates the Colorado River Aqueduct(CRA), which connects the Colorado River to the Metropolitan regional distribution system.The CRA has a capacity of 1.25 Million AFY (MAF) to transport Metropolitan’s currentcontracted entitlement of 550 Thousand AFY (TAF) of Colorado River water. Metropolitanalso holds a priority for an additional 662 TAF and 180 TAF when surplus flows areavailable.• State Water Project (SWP) Supply: The original State Water Project Contract called for anultimate delivery capacity of 4.2 MAF, with Metropolitan holding a contract for 1.9 MAF.Since that time there have been significant challenges to meeting those delivery goals.DWR released a Water Allocation Analysis in 2010 that has resulted in a Metropolitanestimated reduction in SWP supplies of 150 – 200 TAF for 2010 (Metropolitan DraftRegional UWMP, 2010).As a result of the inherent uncertainty in Colorado River and SWP supplies given varioushydrologic, environmental, and legal considerations, Metropolitan has undertaken severalplanning initiatives, summarized below, to broaden its water resources reliability. Metropolitanhas documented that consistent with Section 4202 of its Administrative Code, the agency isprepared to provide its member agencies with adequate supplies of water to meet expandingand increasing needs in the years ahead. When additional water resources are required to meetincreasing needs, Metropolitan has stated that it will be prepared to deliver such supplies. In its2010 Regional Urban Water Management Plan, Section II.4, Metropolitan also states that as aresult of investments made in supply and storage, it has identified a resource management planthat should result in 100 percent reliability for non-discounted non-interruptible demands through2035.• Integrated Resources Plan Updates (IRP): Metropolitan’s IRP updates completed in 1996,and updated in 2004 and 2010, included assessments of potential future regional demandprojections based upon anticipated population and economic growth as well as conservationpotential. The IRP also includes regional supply strategies and implementation plans tobetter manage resources, meet anticipated demand, and ensure overall system reliability.Metropolitan intends to implement the 2010 IRP to further support member agency localresource development as well as to investigate generating its own local resources fordistribution to member agencies. The development of local resources, as well as thefurthering of existing conservation goals to meet the Water Conservation Act of 2009targets, is anticipated to provide a supply buffer for member agencies to rely upon in timesof drought and long-term climatic changes.Page 6-2Final Report, 2010 Urban Water Management Plan – Culver CityGolden State Water Companyg:\adminasst\jobs\2010\1070001.00_gswc-uwmp\09-reports\9.09-reports\2011-08\grp3\gswc_culvercity_2010_uwmp-final.doc