North American Subbasin GSP

Access GSP Sections

• Executive Summary
• Section 1 Introduction
• Section 2 Agency Information
• Section 3 Plan Area
• Section 4 Hydrogeologic Setting
• Section 5 Groundwater Conditions
• Section 6 Water Budgets
• Section 7 Monitoring Networks
• Section 8 Sustainable Management Criteria
• Section 9 Projects and Management Actions
• Section 10 Plan Implementation
• Section 11 Notice and Communications
• Section 12 References
• Appendix A Implementation MOA
• Appendix B Domestic Well Assessment
• Appendix C Monitoring Construction Details
• Appendix D Geologic Section Well Logs
• Appendix E Levee Geologic Sections
• Appendix F Assessment of Principal Aquifers
• Appendix G Western Area Hydrographs
• Appendix H Central Area Hydrographs
• Appendix I Eastern Area Hydrographs
• Appendix J Vertical Gradients
• Appendix K Ione Well Hydrographs
• Appendix L Summary of Water Quality Detections
• Appendix M Water Quality Trend Analysis Results
• Appendix N Surface Water Interactions
• Appendix O GDE Analysis
• Appendix P Groundwater Model Documentation
• Appendix Q SMC Hydrographs
• Appendix R List of Public Meetings
• Appendix S Public Comments
• Appendix T Interbasin Coordination Communications

Annual Reports

Water Year 2021

Water Year 2022

Water Year 2023

Water Year 2024

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Public Meetings

Public meeting materials can be found here.