Bay-Delta Office

Long-Term Operation of the Central Valley Project and State Water Project

Photo Credit: Ben Nelson

The federal Central Valley Project (CVP) and the State Water Project (SWP) together provide water for more than 25 million Californians, millions of acres of some of the most productive farmland in the world. Water released from CVP reservoirs supports 19 federal, state and local wildlife refuges along the Pacific Flyway. The CVP and SWP provide flood management, protect and restore habitat for threatened and endangered species, supplement water supplies for local communities, produce clean and renewable hydroelectric power, backstop water quality in the Sacramento and San Joaquin Delta and support important commercial and recreational fisheries.

On Sept. 30, 2021, Reclamation and the California Department of Water Resources requested reinitiation of consultation on the Long-Term Operation of the CVP and SWP. with the U.S. Fish and Wildlife Service and National Marine Fisheries Service due to anticipated modifications to the proposed action that may cause effects to ESA-listed species and/or designated critical habitat not analyzed in the 2019 biological opinions.

On Feb. 28, 2022, a Notice of intent to prepare an Environmental Impact Statement (EIS) for the Long-Term Operation of the CVP and SWP was published in the Federal Register, followed by a series of public scoping meetings.

On July 26, 2024, Reclamation released the public draft EIS for the Long-Term Operation of the CVP and SWP. The public draft EIS evaluates four alternatives and a no action alternative. The alternatives cover CVP service areas and the operation of CVP dams, power plants, diversions, canals, gates and related federal facilities located on the Clear Creek watershed of the Trinity River Division, the Sacramento, American, Stanislaus, and San Joaquin rivers, and CVP and SWP facilities in the Sacramento-San Joaquin Delta and Suisun Marsh. 

On Nov. 15, 2024, Reclamation released the final Environmental Impact Statement for the Long-Term Operation of the CVP and SWP. Prepared in accordance with the National Environmental Policy Act, the final EIS presents Reclamation’s analysis of the four alternatives and no action alternative that reflect a reasonable range of options for the operation of dams, powerplants, and related facilities of the CVP and Delta facilities of the SWP.

The preferred alternative includes a new framework for Shasta Reservoir operations to benefit winter-run Chinook salmon; revised operational criteria for Delta exports that supply water to cities, farms, and wildlife refuges and supports implementation of the Healthy Rivers and Landscapes Program, to provide more Delta outflow/habitat restoration in the Sacramento-San Joaquin Bay-Delta.

Where to Review: The final EIS is available for public review via the following ways:

Project Website: https://www.usbr.gov/mp/nepa/nepa_project_details.php?Project_ID=54661

Next steps = The schedule for the associated documents is below and subject to change

• CDFW Releases Incidental Take Permit – November 4  
• USFWS Releases Biological Opinion – November 8
  • LTO Final Biological Opinion
    • Appendix 1: Effects Tracking Table
    • Appendix 2: Proposed Action and AMP
• Reclamation Releases Final EIS – November 15  
  • Final Environmental Impact Statement  (project site) 
• NOAA Fisheries Releases Biological Opinion – December 6
• Reclamation Releases ROD – December 20

Shasta StoryMap Chapter 1 - Operating Shasta in a New Climate: As the Bureau of Reclamation reinitiates of consultation on the long-term operation of the Central Valley Project and State Water Project under the Endangered Species Act, this multimedia presentation explains the amazing degree of complexity and challenges facing planners as they ponder the operation of Shasta Reservoir in a new paradigm.

Shasta StoryMap Chapter 2 - Applied Science and Analysis of Alternatives: Chapter 2 of the Shasta StoryMap delves into the extensive and multitiered modeling tools used to help planners envision scenarios and propose operations alternatives designed to achieve water supply reliability in an environmentally sustainable manner.

Shasta StoryMap Chapter 3 - Shasta and the long-term operation plan for the Central Valley Project: Achieving durability and equanimity for multiple needs. As Reclamation issues its draft environmental impact statement for the long-term operation of the CVP and SWP, this chapter looks at the incorporation of climate change conditions into the plan for operation and the efforts to protect winter-run Chinook salmon.

The Initial Alternatives Report (Sept. 2022) documents the analysis of options to inform alternative formulation for the proposed Long-Term Operation of the Central Valley Project and State Water Project. Initial alternatives were developed through the National Environmental Policy Act (NEPA) scoping process, coordination under the Water Infrastructure Improvement for the Nation (WIIN) Act, interagency coordination teams, outreach to interested parties, and Reclamation’s decades of experience in operating the CVP.

• Long-Term Operation, Initial Alternative (PDF - 1.3 MB)
• Appendix A – Facility Descriptions (PDF - 2.5 MB)
• Appendix B – Seasonal Water Operations and Ecosystem Analyses (PDF - 2.7 MB)
• Appendix C – Species Spatial-Temporal Domains (PDF - 3.8 MB)
• Appendix D – Seasonal Operation Stressors on Aquatic Species (PDF - 2.2 MB)
• Appendix E – Exploratory Modeling (PDF - 5.3 MB)
• Appendix F – Potential Common Components (PDF - 2.5 MB)
• Appendix G – Specific Facility and Water Operations Deconstruction (PDF - 402 KB)
• Appendix H – Conservation Measure Deconstruction (PDF - 1.7 MB)
• Appendix I – Old and Middle River Flow Management (PDF - 28 MB)
• Appendix J – Spring Pulses and Delta Outflow - Smelt, Chinook Salmon, and Steelhead Migration and Survival (PDF - 1.1 MB)
• Appendix K – Summer and Fall Delta Outflow and Habitat (PDF - 2.7 MB)
• Appendix L – Shasta Coldwater Pool Management (PDF - 9.7 MB)
• Appendix M – Folsom Reservoir Flow and Temperature Management (PDF - 2.9 MB)
• Appendix N – New Melones Stepped Release Plan (PDF - 483 KB)
• Appendix O – Tributary Habitat Restoration (PDF - 548)
• Appendix P – Delta Habitat Restoration (PDF - 1.6 MB)
• Appendix Q – Georgiana Slough Barrier Non-Physical Barrier (PDF - 410 KB)
• Appendix R – Head of Old River Barrier (PDF - 3 MB)
• Appendix S – Governance Under Development for the Draft EIS (PDF - 101 KB)
• Appendix T – Drought Under Development for the Draft EIS (PDF - 151 KB)
• Appendix U – Monitoring Under Development for the Draft EIS (PDF - 151 KB)
• Appendix V – Screened Scoping Comments (PDF- 833 KB)
This report documents the scoping activities that occurred for the 2021 Reinitiation of Endangered Species Act (ESA) Section 7 Consultation on the Long-Term Operation of the Central Valley Project and State Water Project.
• Public Scoping Report: 2021 Reinitiation of Endangered Species Act Section 7 Consultation on the Long-Term Operation of the Central Valley Project and State Water Project (PDF - 374 KB)
• Attachment A: Scoping Meeting Notification (PDF - 348 MB)
• Attachment B: Scoping Meeting Materials (PDF - 2.4 MB)
• Attachment C: Scoping Comments (PDF - 22 MB)
These letters document Reclamation’s request for reiniation of Section 7 consultation on the Long-Term Operation of the Central Valley Project and State Water Project and the Services responses
• Reinitiation Letter, September 30, 2021 (PDF - 170 KB)
• FWS Response Letter, October 1, 2021 (PDF - 165 KB)
• NMFS Response Letter, October 1, 2021 (PDF - 149 KB)

Note: documents in Portable Document Format (PDF) require Adobe Acrobat Reader 5.0 or higher to view download Adobe Acrobat Reader.