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Yolo Groundwater Sustainability Plan

Draft Groundwater Sustainability Plan (All Chapters)

The 60 day public commenting period for the Yolo Subbasin DRAFT Groundwater Sustainability Plan ended on October 27, 2021. Staff are working to incorporate the comments that were received during this period into the GSP.

For help accessing the plan or to request a print copy, please contact us. 

DRAFT Groundwater Sustainability Plan (All Chapters - No Appendices)

DRAFT Appendices to Groundwater Sustainability Plan (All Appendices) 

Appendix C - Water Budget

Appendix D - Model Documentation

Appendix E - Yolo Subbasin Hydrographs of Representative Wells

Appendix F - Table of Projects and Management Actions



Projects and Management Actions - Draft and Solicitation

The YSGA is soliciting ideas for Projects and Management Actions relating to the Yolo Subbasin GSP.  To suggest an idea for a project or a management action - use this form (if you have a Google account)

Additionally, you can fill out a row in this Excel worksheet and Email it to the YSGA (

HERE is the current list of proposed projects. Please note that the Projects and Managements Actions proposed here are still in development. 


GSP DRAFT Chapter 2 - The Basin Setting

Draft Chapter 2 - the Basin Setting of our Groundwater Sustainability Plan (GSP).

Feedback on the Draft Chapter 2 can be provided to the YSGA by completing this survey.

The Basin Setting Chapter provides information about the hydrogeologic conceptual model, current and historical groundwater conditions, the Yolo Subbasin water budget, and description of the six subbasin management areas.

Questions, comments, concerns, and general feedback can also be provided via e-mail at:

Basin Setting Appendix A - Water Budget

Basin Setting Appendix B - Model Documentation


GSP DRAFT Chapter 1 - The Introduction

Draft Chapter 1 of the GSP can viewed for informational purposes. The public comment period for Draft Chapter 1 has closed. Comments have been incorporated. Click HERE for the current version of DRAFT Chapter 1 of the Yolo Subbasin GSP.  


 GSP Process

At the March 2018 YSGA Board meeting, the Board adopted Resolution 2018-1 formalizing the initiation of developing the Yolo Subbasin Groundwater Sustainability Plan (GSP).  Yolo Subbasin beneficial users and interested parties are encouraged to sign up for YSGA updates and to check this website often for meetings and workshops related to the development of the GSP.

The YSGA’s formal notice of intent is also available on DWR’s SGMA portal.  Please check back here often for updates on the planning process.

Please read the Yolo Subbasin GSP Components Schematic and memos below to learn more about our Work Plan, Budget, and Schedule for developing the Yolo Subbasin GSP.

1_Water Budget Memo

2_Hydrogeologic Conceptual Model Memo

3_Stakeholder Communication and Engagement Memo

4_Groundwater Monitoring and Reporting Memo

5_Surface Water and Groundwater Modeling Memo

6_Sustainable Management Criteria Memo

Read more about what is required to be in a GSP in DWR’s GSP Emergency Regulations Guide.