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September 13, 2007

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

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September 13, 2007

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

  2. Outline • 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

  4. Feasibility Study Phases Initial Alternatives Plan Formulation Feasibility Study

  5. Sites ReservoirProject 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

  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

  8. Shasta Sites Oroville Folsom Ecosystem Restoration • 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 8

  9. Shasta Sites Oroville Folsom 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 9

  10. Shasta Sites Oroville Folsom Water Quality • Improve Delta Water Quality during Summer and Fall Months 10

  11. Estimated Water BenefitsUnder Various Operational Scenarios

  12. Sites Reservoir Statistics * 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. Wanger Ruling Isolated Conveyance Climate Change OCAP BO Evaluating Project Operations“a moving target”

  14. Moving Target Studies DWR has performed sensitivity analyses on: • 6680 cfs vs. 8500 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

  16. Planning Schedule Plan Formulation Report Initial Alternatives Information Report Feasibility Report & EIS/EIR Draft Feasibility Report & EIS/EIR Prepare Record of Decision and Notice of Determination & Process Final Report Define Initial Alternatives Develop & Evaluate Alternatives Refine & Compare Alternatives Public Hearings Public & Stakeholder Outreach 20052006 2007 2008 2009

  17. Contacts Don Rasmussen Department of Water Resources P.O. Box 942836 Sacramento CA 94236 916-651-9244 donr@water.ca.gov David Lewis Bureau of Reclamation 2800 Cottage Way, MP-700 Sacramento CA 95825 916-978-5071 dlewis@mp.usbr.gov Project Websites: www.storage.water.ca.gov/northdelta/index.cfm www.usbr.gov/mp/nodos/index.html

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