1 September 13, 2007 North-of-the-Delta Offstream Storage ACWA Regions 9 and 10 Carlsbad Water Summit North-of-the-Delta Offstream Storage ACWA Regions 9 and 10 Carlsbad Water Summit State of California Department of Water Resources U.S. Department of the Interior Bureau of Reclamation Don Rasmussen

2 Outline  Planning Objectives  Status of Studies  Potential Features, Benefits and Costs  Sensitivity Analysis  NODOS can Help “Fix the Delta”  Schedule  Planning Objectives  Status of Studies  Potential Features, Benefits and Costs  Sensitivity Analysis  NODOS can Help “Fix the Delta”  Schedule

3 Planning Objectives  Primary Objectives: Increase water supply and water supply reliability and Sacramento Valley water management flexibility Improve Delta water quality Increase the survival of anadromous fish populations in the Sacramento River, as well as the health and survivability of other aquatic species  Secondary Objectives: Provide ancillary hydropower generation Provide additional recreational opportunities Provide incremental flood damage reduction benefits  Primary Objectives: Increase water supply and water supply reliability and Sacramento Valley water management flexibility Improve Delta water quality Increase the survival of anadromous fish populations in the Sacramento River, as well as the health and survivability of other aquatic species  Secondary Objectives: Provide ancillary hydropower generation Provide additional recreational opportunities Provide incremental flood damage reduction benefits

4 Feasibility Study Phases Initial Alternatives Plan Formulation Feasibility Study

5 Sites Reservoir Project Features

6 Potential Benefits  Support ecosystem restoration  Increase water supply and water supply reliability for: Urban Agricultural Environmental  Improve Delta water quality  Improve system flexibility  Provide ancillary hydropower generation  Improve flood protection  Increase recreational opportunities  Provide for Delta emergency response  Support ecosystem restoration  Increase water supply and water supply reliability for: Urban Agricultural Environmental  Improve Delta water quality  Improve system flexibility  Provide ancillary hydropower generation  Improve flood protection  Increase recreational opportunities  Provide for Delta emergency response

7 Improve System Flexibility  Sites can provide flexibility to the state’s constrained water management system  Sites can be operated to contribute to the long-term sustainability of the Delta ecosystem, maintain water quality and supply reliability, and mitigate the effects of Delta levee failure  Restoration Action storage could be adaptively managed to support restoration actions in the Delta  Added flexibility from Sites can also improve the viability and effectiveness of conjunctive management, water exchanges and transfers  Sites can provide flexibility to the state’s constrained water management system  Sites can be operated to contribute to the long-term sustainability of the Delta ecosystem, maintain water quality and supply reliability, and mitigate the effects of Delta levee failure  Restoration Action storage could be adaptively managed to support restoration actions in the Delta  Added flexibility from Sites can also improve the viability and effectiveness of conjunctive management, water exchanges and transfers

8 Shasta Sites Oroville Folsom ●Provide Stable Flows – Keswick to Colusa ●Increase Cold Water Pool in Shasta ●Improve Fish Passage at RBDD ●Reduce Diversions at TC and GCID Canals ●Provide Supplemental Flows for Cottonwood Establishment ●Provide Stable Flows – Keswick to Colusa ●Increase Cold Water Pool in Shasta ●Improve Fish Passage at RBDD ●Reduce Diversions at TC and GCID Canals ●Provide Supplemental Flows for Cottonwood Establishment Ecosystem Restoration 88

9 Water Supply ●Increase Water Supply Reliability for Local, SWP & CVP Contractors ●Provide Water Supply for the EWA or equivalent program ●Provide Water for Level 4 Refuge Supply ●Increase Water Supply Reliability for Local, SWP & CVP Contractors ●Provide Water Supply for the EWA or equivalent program ●Provide Water for Level 4 Refuge Supply 99 Shasta Sites Oroville Folsom

10 Water Quality ●Improve Delta Water Quality during Summer and Fall Months 1010 Shasta Sites Oroville Folsom

11 Estimated Water Benefits Under Various Operational Scenarios

12 Sites Reservoir Statistics Storage Capacity 1.8 Million Acre-Feet Construction Cost* $2.3 - $3.2 Billion Total Annual Benefits470 – 640 TAF per year * Range of costs reflects the various conveyance options and appurtenant structures under consideration. Construction cost estimates are at preliminary feasibility level of detail and do not include interest during construction, annual operations and maintenance, and power costs.

13 Evaluating Project Operations “a moving target” OCAP BO Wanger Ruling Climate Change Isolated Conveyance

14 Moving Target Studies DWR has performed sensitivity analyses on:  6680 cfs vs cfs Banks pumping rate  Climate Change  15,000 cfs Isolated Facility Future Studies:  Effects of Wanger Ruling (reduced exports)  Climate Change with Sea Level Rise  Other Isolated Facility Configurations DWR has performed sensitivity analyses on:  6680 cfs vs cfs Banks pumping rate  Climate Change  15,000 cfs Isolated Facility Future Studies:  Effects of Wanger Ruling (reduced exports)  Climate Change with Sea Level Rise  Other Isolated Facility Configurations

15 NODOS Can Help Fix The Delta Direct  Produce benefits for supply, quality and the ecosystem while reducing stressors on the Delta.  Protect delta smelt in the North Bay Indirect  Provide ecosystem flows, cooler water and improved habitat for anadromous fish on Sacramento River  Added flexibility from Sites can also improve the viability and effectiveness of conjunctive management, water exchanges and transfers Direct  Produce benefits for supply, quality and the ecosystem while reducing stressors on the Delta.  Protect delta smelt in the North Bay Indirect  Provide ecosystem flows, cooler water and improved habitat for anadromous fish on Sacramento River  Added flexibility from Sites can also improve the viability and effectiveness of conjunctive management, water exchanges and transfers

16 Planning Schedule Initial Alternatives Information Report Plan Formulation Report Feasibility Report & EIS/EIR Define Initial Alternatives Develop & Evaluate Alternatives Draft Feasibility Report & EIS/EIR Refine & Compare Alternatives Prepare Record of Decision and Notice of Determination & Process Final Report Public Hearings Public & Stakeholder Outreach

17 Contacts David Lewis Bureau of Reclamation 2800 Cottage Way, MP-700 Sacramento CA Don Rasmussen Department of Water Resources P.O. Box Sacramento CA Project Websites: