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Groundwater Sustainability Plan

Draft 2027 Basin GSP Amendment:

As part of the state-mandated Groundwater Sustainability Plan (GSP) Periodic Evaluation (PE), Santa Margarita Groundwater Agency (SMGWA) determined the need to amend its approved GSP that was submitted to the Department of Water Resources (DWR) in January 2022.

SMGWA welcomes comments on either the draft GSP PE or the draft 2027 Basin GSP.

Click here for the draft GSP PE.

Click here for the draft 2027 Basin GSP Amendment [will be posted shortly]

Please submit comments via email to admin@smgwa.org by Sunday, October 18, 2026.

The SMGWA will receive an overview of the comments received and consider adoption of the GSP PE and 2027 Basin GSP Amendment at its regular meeting on October 22, 2026.

Approved 2022 Basin GSP:

Under the Sustainable Groundwater Management Act, one of the key responsibilities of SMGWA was the development, adoption, and submittal of a Basin GSP to the DWR. The

Basin GSP was adopted by the SMGWA Board of Directors on November 17, 2021, and submitted to DWR on January 3, 2022. On April 27, 2023, DWR approved the Basin GSP.


View the Basin GSP.

View the DWR letter approving the Basin GSP and attachments.

Additional information:

An 8-page Groundwater Sustainability Plan Summary provides a clear and concise overview of the GSP.

Executive Summary of the GSP

Review all written comments on the draft GSP received by the Board of Directors prior to the adoption of the GSP.

The SGMA Portal has information on the status of all GSPs throughout the state.