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Read the Groundwater Sustainability Plan (GSP)

Vina Subbasin GSP Determination Letter

On July 27, 2023 the California Department of Water Resources (DWR) notified the Vina Subbasin GSP Plan Manager that the GSP has been APPROVED.  As you will see in the Determination Letter, the approval has been based on recommendations documented in the DWR Staff Report that indicate that the GSP satisfies the objectives of the Sustainable Groundwater Management Act (SGMA) and substantially complies with the GSP Regulations. In addition, the DWR Staff Report also proposes recommended corrective actions that will enhance the GSP; these actions will be considered as part of future GSP updates.


Groundwater Sustainability Plan

Download the Vina Groundwater Sustainability Plan (GSP). This is the adopted GSP that was submitted to the Department of Water Resources (DWR) for review.

The DWR evaluates GSPs to determine if they comply with SGMA, substantially comply with the GSP Regulations, and whether implementation of the GSP is likely to achieve the sustainability goal for the basin. DWR’s evaluation and assessment is based on criteria outlined in the GSP Regulations.

If you are having issues accessing or downloading the GSP, please let us know, call (530) 552-3592 or email at 

1. Vina GSP_Preface, Table of Contents.pdf2. Vina GSP_Executive Summary.pdf3. Vina GSP_Chapter 1.pdf4. Vina GSP_Chapter 2.pdf5. Vina GSP_Chapter 3.pdf6. Vina GSP_Chapter 4.pdf7. Vina GSP_Chapter 5.pdf8. Vina GSP_Chapter 6.pdf9. Vina GSP_References.pdfComplete GSP_01-202210. Vina GSP_Appendices.pdf

Clicking the links below will take you to the GSP on the DWR SGMA Portal.

The Vina GSP is currently being reviewed by DWR and is posted on the DWR SGMA Portal, where you can can access the GSP - click here.