Delta-Mendota Subbasin
Sustainable Groundwater Management
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Overview
Welcome to the Delta-Mendota Subbasin Sustainable Groundwater Management Act website, a shared resource for all 23 Groundwater Sustainability Agencies (GSAs) in the Delta-Mendota Subbasin. This website is dedicated to providing information on activities, meetings and resources related to the sustainable management of the Delta-Mendota Subbasin.
Delta-Mendota Subbasin
This website provides information on sustainable groundwater management activities, meetings and resources in the Delta-Mendota Subbasin. The Sustainable Groundwater Management Act, passed in 2014, requires the formation of local Groundwater Sustainability Agencies (GSAs) to oversee the development and implementation of Groundwater Sustainability Plans (GSPs), with the ultimate goal of achieving sustainable management of the State’s groundwater basins. As of June 2017, 23 GSAs have formed in the Delta-Mendota Subbasin. These GSAs have until January 31, 2020 to develop and adopt one or more GSPs for the Delta-Mendota Subbasin.
This website will provide updates on preparation of the GSPs for the Delta-Mendota Subbasin, as well as meeting announcements and availability of draft plans, maps and other relevant documents
Request for Proposals
There are no active RFPs at this time.
Annual Report
Delta-Mendota Subbasin Consolidated Annual Report for Water Year 2021
Delta-Mendota Subbasin Consolidated Annual Report for Water Year 2020
Delta-Mendota Subbasin Consolidated Annual Report for Water Year 2019
Calendar and Meetings

Delta-Mendota Subbasin Meetings
Delta-Mendota Subbasin Coordination Committee
Upcoming Meeting: Delta‐Mendota Subbasin Coordination Committee Meeting
Monday August 14, 2023 1:00 PM
SLDMWA Boardroom, 842 6th Street, Los Banos, CA.
Joint Meeting of the Northern & Central Delta-Mendota Region Management Committees and Central Delta-Mendota GSA
Joint Workshop of the Technical Working Group and Coordination Committee (in-person Technical Working Group meeting)
Delta-Mendota Subbasin Communications Working Group
At this time, no future meetings for the Communications Working Group are scheduled.