Integrated Water Resource Plan Water Planning and Stewardship Committee June 9, 2008

IRP Background 1996 IRP was guided by Metropolitan’s Mission Statement of: 1.Ensuring Reliability 2.Ensuring Affordability 3.Ensuring Water Quality 4.Maintaining Diversity 5.Ensuring Flexibility 6.Acknowledging Environmental and Institutional Constraints.

1996 IRP created a water resource development strategy known as the “Preferred Resource Mix” Targets for each of the following resources were established through the year 2020: 1.Conservation 2.Local Resources - Water Recycling, Groundwater Recovery and Desalination 3.Colorado River Supplies and Transfers 4.State Water Project Improvement 5.In-Region Surface Reservoir Storage 6.In-Region Groundwater Storage

2004 IRP update fulfilled three objectives: 1.Review the goals and achievements of the 1996 IRP 2.Identify the changed conditions for water resource development 3.Update resource development targets through 2025 Addition of 10 percent planning buffer

IRP Process IRP Workgroup -Representatives from Metropolitan, member agency, sub-agency and groundwater basin managers. Public Input -Member agency workshops -Regional assemblies -Public forums

IRP Targets & Results Conservation -Active and code-based conservation on track with targets CategoryFY IRP Update653,850865,2001,027,6001,106, IRP Target571,000738,000882,000N/A Actual / Estimate703,000866,0001,043,001,147,000

Local Resources -Local resources are on track to meet 2010 target -As of fiscal year 2006/07 Metropolitan has invested over $244 million and partnered on over 63 recycling projects and 26 groundwater recovery projects Source IRP Update355,000410,000500,000750, IRP355,000410,000500,000N/A Actual / Estimate270,000426,000628,000637,000

Colorado River Aqueduct - Quagga Mussels In-Region Surface Water Storage -Metropolitan Reservoirs (DVL, Mathews, Skinner) -Flexible Storage in DWR Reservoirs (Castaic, Peris) In-Region Groundwater Storage

Nest Steps 2009 IRP Objectives: 1.Review the achievements of the 1996 IRP and the 2004 Update 2.Identify changing conditions affecting water resource development 3.Update resource development targets through 2030

December 10, 2007 Water Resource Management