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The Shandon-San Juan Water District has formed a Groundwater Sustainability Agency (GSA), the Shandon-San Juan GSA.  GSAs are tasked with assessing conditions in their local basins and adopting local management plans or “Groundwater Sustainability Plans” (GSPs).  Each high and medium priority groundwater basin must be managed in its entirety by one or more GSAs in a coordinated manner.  For more information, download the fact sheets.


The Shandon-San Juan GSA worked collaboratively with other local area GSA's to form the Paso Basin Cooperative Committee.  The purpose of the Cooperative Committee is to to develop one single Groundwater Sustainability Plan (GSP) for the entire Basin that will be considered for adoption by each individual GSA and subsequently submitted to the Department of Water Resources for approval by January 31, 2020.  The Paso Basin Cooperative Committee is comprised of the following GSA's.

  • City of El Paso de Robles

  • County of San Luis Obispo

  • Heritage Ranch Community Services District

  • San Miguel Community Services District

  • Shandon-San Juan Water District


The District held a public hearing on Thursday, June 8, 2017 to officially form a GSA. View the presentation.

Framework of priorities to become or form a groundwater sustainability agency (GSA).  Read more.

The County held a public hearing on May 16, 2017 to provide an overview of the Paso Basin.  View presentation.


County of San Luis Obispo

Sustainable Groundwater Management Website:

Sustainable Groundwater Management Act (SGMA) Updates:

June 2017 Update

2014 SGMA Legislation Text with 2015 Legislative Amendments:

GSA Frequently Asked Questions:

GSA Formation Table:

GSA Interactive Map:

Water Management Planning Tool:

Basin Boundaries Assessment Tool:

GIC Interactive Map (Data):

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