Project Description: Development of the ICM is the first phase of a planned three-phased effort to develop the technical and regulatory basis for adoption of a Salt/Nutrient Management Plan (SNMP) for the Central Valley. The purpose of this phase is to develop a conceptual level (or 30,000 foot level) analysis of water balance and associated salt and nutrient (nitrate) conditions in the Central Valley. This effort will rely on the establishment of Initial Analysis Zones (IAZs) to complete water quantity and quality analyses within smaller areas within the valley and detailed analyses in two selected subareas of the Central Valley. The IAZs provide the foundation for the eventual establishment of salt/nutrient management zones in the Basin Plan. The outcome of the ICM project will be an assessment of salt/nitrate conditions in the Central Valley, including identification of hotspots and long term trends for salt and nitrate concentrations. Subsequent phases will refine the findings from the ICM and develop the SNMP which includes preparation of a salt/nitrate program of implementation and completion of regulatory analyses to support adoption of the SNMP into the Basin Plan.
Project Status: Project was initiated in September 2012 and completed in December 2013.
Project Menu
Technical Deliverables
Task 3.2 – Data Sources
- Draft Memorandum
- Final Memorandum
Tasks 3.3 & 3.4 Report – Data Gaps and Data Summary
- Draft Memorandum
- Final Memorandum
Task 4 –Initial Analysis Zones & Phase 2 Recommendations
Task 5 – Recommended Methodologies to Assess Water, Salt & Nitrate Balances for the Central Valley Floor and Two Prototype Areas Report
- Draft Report
- Final Report
- Task 5 Report Addendum
Task 7/8 Report
- default Cover Page - ICM Draft Final Report (103 KB)
- default ICM DRAFT Final Report - August 2013 (22.20 MB)
- default Appendix A - Introduction (1.12 MB)
- default Appendix B - Data Summary and Data Gaps (124 KB)
- default Appendix D - Results Groundwater (532 KB)
- default Appendix E - Results Surface Water (1.59 MB)
- default Appendix F - Modesto Model Selected Wells for Comparing Simulated and Measured Data GRAPHS (120 KB)
- default ICM Comment Response Summary - August 2013 (132 KB)
Final Report and Appendices
- default ICM Final Report - December 2013 (29.94 MB)
- default Appendix A - Key Meetings Held with Project Committee (1.62 MB)
- default Appendix B - Summary of Well information by IAZ (124 KB)
- default Appendix C - Methodology for Generating Mass Loading Inputs (343 KB)
- default Appendix D - Details of Land Coverage and Loading Assumptions (346 KB)
- default Appendix E - Deep Ambient Groundwater Quality Trends by IAZ (2.48 MB)
- default Appendix F - Groundwater Results IAZ (635 KB)
- default Appendix G - Surface Water Results by IAZ (1.59 MB)
- default Appendix H - Modesto Model Selected Wells for Comparing Simulated and Measured Data (120 KB)
Technical Review - default Comment/Response Table (306 KB)
Meetings and Presentations
- Modeler’s Memorandum
- November 26 Workshop Materials
- default April 18, 2013 Executive Committee Presentation (8.76 MB)
- June 20, 2013 Executive Committee Presentation
