SGMA Documents & Reports

Groundwater Sustainability Plan

The East Contra Costa Groundwater Sustainability Agencies (GSAs) have prepared the East Contra Costa Subbasin Groundwater Sustainability Plan (GSP).  This document was prepared as part of the region's implementation of the Sustainable Groundwater Management Act (SGMA).

Below please find links to the Final GSP (released October 2021).

• Final Groundwater Sustainability Plan (report + appendices, 155MB)

  • Final GSP Report (report only, 40MB)

  • Final GSP Appendices (appendices only, 115MB)

The Department of Water Resources (DWR) issued its approval letter for the East Contra Costa Subbasin’s GSP on July 24, 2023.

For SGMA inquiries or to be included on the email list, please contact groundwaterinfo@dcd.cccounty.us.

Annual Reports

• East Contra Costa Subbasin Annual Report, March 2023 (Water Year 2022)

• East Contra Costa Subbasin Annual Report, March 2022 (Water Years 2019-2021)

Other Documents

The following are additional documents and reports related the Basin.

• SGMA Water Quality Frequently Asked Questions

• East CC Basin MOU

• SGMA Fact Sheet

• Protecting Groundwater in the East Contra Costa Subbasin - Handout 1

• Protecting Groundwater in the East Contra Costa Subbasin - Handout 2

• East Contra Costa Subbasin Communications Plan

• Stakeholder Survey Results January 2019

For SGMA inquiries or to be included on the email list, please contact groundwaterinfo@dcd.cccounty.us.