Staff Report in Support of Sacramento/Delta Updates to the Bay-Delta Plan
To access the comments received on the draft Staff Report, please send a request to SacDeltaComments@waterboards.ca.gov.
2025 Limited Recirculation of Draft Staff Report
On December 12, 2025, the State Water Board released a new chapter (Chapter 13) of the draft Staff Report for a limited recirculation.
- 13. Revised Proposed Plan Amendments
- H1. Sacramento Water Allocation Model Methods and Results for the Revised Proposed Plan Amendments
- H1a. Sacramento Water Allocation Model Methods
- H1a1. Assessment of Effect of Reservoir Storage on Reservoir Release Temperatures
- H1a2. Sacramento Water Allocation Model Results for Revised Proposed Plan Amendments
- H1a3. Sacramento Water Allocation Model Results for Updated Unimpaired Flow Scenarios
- H1a4. Sacramento Water Allocation Model Results for Central Valley Project Export Constraint Sensitivity Analysis
- H1a5. Sacramento Water Allocation Model Results for Export Constraint Sensitivity Analysis
- H1b. Water Temperature Modeling and Fish Assessment for the Sacramento, Feather, American, and Yuba Rivers
- H1c. Salmonid Tributary Habitat Analysis
- H2. Environmental Checklists for the Revised Proposed Plan Amendments
- H3. Mitigation Measures for the Revised Proposed Plan Amendments
2023 Draft Staff Report
To access a single file of the draft Staff Report, please contact staff at SacDeltaComments@waterboards.ca.gov.
- Cover and Title Pages
- Table of Contents
- 1. Executive Summary
- 2. Hydrology and Water Supply
- 3. Scientific Knowledge to Inform Fish and Wildlife Flow Recommendations
- 4. Other Aquatic Ecosystem Stressors
- 5. Proposed Changes to the Bay-Delta Plan for the Sacramento/Delta
- 6. Changes in Hydrology and Water Supply
- 7. Environmental Analysis
- 7.1 Introduction, Project Description, and Approach to Environmental Analysis
- 7.2 Description of Alternatives
- 7.3 Aesthetics
- 7.4 Agriculture and Forest Resources
- 7.5 Air Quality
- 7.6 Biological Resources
- 7.7 Cultural Resources
- 7.8 Energy
- 7.9 Geology and Soils
- 7.10 Greenhouse Gas Emissions
- 7.11 Hazards and Hazardous Materials
- 7.12 Hydrology and Water Quality
- 7.13 Land Use and Planning
- 7.14 Mineral Resources
- 7.15 Noise
- 7.16 Population and Housing
- 7.17 Public Services
- 7.18 Recreation
- 7.19 Transportation/Traffic
- 7.20 Utilities and Service Systems
- 7.21 Habitat Restoration and Other Ecosystem Projects
- 7.22 New or Modified Facilities
- 7.23 Cumulative Impact Analysis, Growth-Inducing Impacts, and Significant Irreversible Environmental Changes
- 7.24 Alternatives Analysis
- 8. Economic Analysis and Other Considerations
- 9. Proposed Voluntary Agreements (Includes Environmental and Economic Analyses)
- 10. Economically Disadvantaged Communities
- 11. Tribal Engagement
- 12. Public Participation
- A. Modeling for the Unimpaired Flow Scenarios
- A1. Sacramento Water Allocation Model Methods and Results
- A2. Delta Simulation Model II (DSM2) Methods and Results
- A3. Agricultural Economic Analysis: SWAP Methodology and Modeling Results
- A4. Regional Economic Analysis Modeling Procedure
- A5. Hydropower, Energy Grid, and Export Energy Analyses
- A6. Water Temperature Modeling and Fish Assessment for the Sacramento, Feather, and American Rivers
- A7. Modeling Approaches Used to Develop Unimpaired Watershed Hydrology
- A8. Salmonid Tributary Habitat Analysis
- B. Scientific Basis Report in Support of New and Modified Requirements for Inflows from the Sacramento River and its Tributaries and Eastside Tributaries to the Delta, Delta Outflows, Cold Water Habitat, and Interior Delta Flows (2017)
- C. Supplemental Special-Status Species Lists for Plants and Wildlife
- D. Supplemental Municipal Supply Analysis Information
- E. Regulatory Framework for Construction Projects
- F. Impact Summary Tables for Alternatives 1, 2, and 3
- G. Appendices for Chapter 9, Proposed Voluntary Agreements
- G1. Voluntary Agreement Proposal
- G2. Final Draft Scientific Basis Report Supplement
- G3. Modeling for the Proposed Voluntary Agreements
- G3a. Sacramento Water Allocation Model Methods and Results for the Proposed Voluntary Agreements
- G3b. Delta Simulation Model II (DSM2) Methods and Results for the Proposed Voluntary Agreements
- G3c. Economic Considerations for the Proposed Voluntary Agreements
- G3d. Hydropower, Energy Grid, and Export Energy Analyses for the Proposed Voluntary Agreements
- G3e. Water Temperature Modeling and Fish Assessment for the Sacramento, Feather, and American Rivers for the Proposed Voluntary Agreements
- G4. Environmental Checklist for the Proposed Voluntary Agreements
Resources
- FAQ
- Video: Overview of Sacramento/Delta Update to Bay-Delta Plan and Draft Staff Report
- Video: Staff Workshop on Overview of Draft Staff Report
- Video: Staff Workshop on Modeling Used in Draft Staff Report
- Revised Notice of Availability and Opportunity for Public Comment, Hearing, and Staff Workshops on Draft Staff Report (November 14, 2023)
- Notice of Availability and Opportunity for Public Comment, Hearing, and Staff Workshops on Draft Staff Report (September 28, 2023)
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