2024 California Integrated Report

For the 2024 California Integrated Report, data from waterbodies in the San Francisco Bay, Santa Ana, and Los Angeles Regional Water Boards were assessed as “on-cycle” Assessments. Data from waterbodies in the Central Valley Regional Water Board were assessed as “off-cycle” assessments for waters within the Sacramento River sub-area. The Sacramento River sub-area is defined as the Sacramento River watershed. It includes the mainstem of the Sacramento River above the legal boundary of the Sacramento-San Joaquin Delta and all surface waters tributary to the mainstem. Additionally, data from waterbodies within the Central Coast and San Diego Regional Water Boards are assessed as “off cycle” assessments.

Project Timeline

February 16, 2023	February 16 -April 3, 2023	March 21, 2023	Winter 2023	Winter 2023/2024	Spring 2024
Draft Staff Report release	Public Review and Comment Period	Hearing on the proposed statewide 303(d) List	Release of Revised Staff Report and Response to Comments	State Board Meeting to consider adoption	Submittal to U.S. EPA

Notices and Draft Staff Report

• Notice of Public Hearing and Opportunity for Public Comment for the Draft 2024 California Clean Water Act Section 303(d) List
• Draft Staff Report for the 2024 California Integrated Report: Surface Water Quality Assessments to comply with Clean Water Act 303(d) List and 305(b) Report

• Appendix A: Recommended 2024 303(d) List of Impaired Waters
• Appendix B: Statewide Waterbody Fact Sheets
  • Appendix B1: Statewide Waterbody Fact Sheets – Excel Version
• Appendix C: Integrated Report Condition Category Reports
  • Appendix C1: Category 1 Waterbody Segments
  • Appendix C2: Category 2 Waterbody Segments
  • Appendix C3: Category 3 Waterbody Segments
  • Appendix C4a: Category 4a Waterbody Segments
  • Appendix C4b: Category 4b Waterbody Segments
  • Appendix C4c: Category 4c Waterbody Segments
  • Appendix C5: Category 5 Waterbody Segments
• Appendix D: Map and Visualization Tool for the 2024 California Integrated Report
• Appendix E: TMDLs Adopted by Regional Water Boards since January 2009
• Appendix F: Generalized Flow Chart for Fish Tissue Mercury Assessments for the California Integrated Report
• Appendix G: Miscellaneous Mapping Changes Report
• Appendix H: Reference Reports
  • Appendix H1: Region 1 Reference Report
  • Appendix H2: Region 2 Reference Report
  • Appendix H3: Region 3 Reference Report
  • Appendix H4: Region 4 Reference Report
  • Appendix H5: Region 5 Reference Report
  • Appendix H6: Region 6 Reference Report
  • Appendix H7: Region 7 Reference Report
  • Appendix H8: Region 8 Reference Report
  • Appendix H9: Region 9 Reference Report
  • Appendix H10: Statewide Reference Report
• Appendix I: 2020-2022 303(d) List of Impaired Waters
• Appendix J: 2024 303(d) List of New Waterbody-pollutant Combination Listing and Delistings
• Appendix K: List of Retired Lines of Evidence
• Appendix L: List of Summing Pollutants
• Appendix M: List of Decisions with Corrections Made to Pyrethroids in Sediment Organic Carbon Normalization Errors
• Appendix N: List of Central Valley Water Board Decisions Corrected Due to Duplicate California Department of Pesticide Regulation Data Submission
• Appendix O: List of Central Valley Water Board Decisions Corrected Due to Pyrethroids Sediment Toxicity Mislabel Error
• Appendix P: List of Central Valley Regional Water Board Decisions Correct Due to Mis-Mapped Stations
• Appendix Q: List of Central Valley Water Board Decisions Reassessed Revised Due to Use of Amended Chemical Constituents Objective and Secondary Maximum Contaminant Levels

• 2024 Data Solicitation Notice