Integrated Water Resource PlanIntegrated Water Resource Plan

Water Planning and Stewardship CommitteeWater Planning and Stewardship Committee

June 9, 2008June 9, 2008

IRP BackgroundIRP 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 ProcessIRP 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 & ResultsIRP Targets & Results Conservation

- Active and code-based conservation on track with targets

Category FY03 2010 2020 2025 IRP Update 653,850 865,200 1,027,600 1,106,9001996 IRP Target 571,000 738,000 882,000 N/AActual / Estimate 703,000 866,000 1,043,00 1,147,000

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 2005 2010 2020 2025IRP Update 355,000 410,000 500,000 750,0001996 IRP 355,000 410,000 500,000 N/AActual / Estimate 270,000 426,000 628,000 637,000

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 StepsNest 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, 2007Water Resource Management