GSA Structure
The Delta-Mendota Subbasin governance structure is designed to support coordinated implementation of the Basin’s Groundwater Sustainability Plan while maintaining local representation and agency participation across the Subbasin.
Coordination Committee
The Delta-Mendota Subbasin governance structure was established through a Basin-wide Memorandum of Agreement (MOA) adopted by the participating Groundwater Sustainability Agencies (GSAs). The MOA created a coordinated governance framework intended to support implementation of a single Groundwater Sustainability Plan while maintaining local agency representation and decision-making authority throughout the Basin.
Under this structure, the Basin is organized into seven GSA Groups representing the 23 GSAs across the Delta-Mendota Subbasin. Each GSA Group designates representatives to participate on the Delta-Mendota Coordination Committee, which serves as the primary Basin-wide coordination body responsible for collaborative planning, technical coordination, and SGMA implementation activities.
This governance structure is intended to support Basin-wide consistency while allowing individual GSAs to continue managing local groundwater issues within their respective service areas. Coordination between agencies supports implementation of the Groundwater Sustainability Plan, compliance with SGMA requirements, public engagement activities, and long-term groundwater sustainability planning throughout the Basin.
Technical Workgroup
The Coordination Committee is supported by a Technical Workgroup consisting of technical staff, consultants, and subject matter experts who assist with groundwater modeling, monitoring coordination, data management, annual reporting, Sustainable Management Criteria evaluation, project and management action development, and other technical implementation efforts.
- Technical Staff
- Consultants
- Subject Matter Experts
Delta-Mendota GSAs
GSA Group | GSA Name | Member Agency |
Aliso Water District | Aliso Water District GSA | Aliso Water District |
Farmers Water District | Farmers Water District GSA | Farmers Water District |
Fresno County | County of Fresno GSA – Delta-Mendota Management Area A | County of Fresno |
County of Fresno GSA – Delta-Mendota Management Area A | County of Fresno | |
Grassland | County of Merced – Delta-Mendota | County of Merced |
Grassland GSA | Grassland Water District | |
Grassland Resource Conservation District | ||
Central Delta-Mendota | Central Delta-Mendota GSA | San Luis Water District |
Panoche Water District | ||
Tranquility Irrigation District | ||
Fresno Slough Water District | ||
Eagle Field Water District | ||
Pacheco Water District | ||
Santa Nella County Water District | ||
Mercy Springs Water District | ||
County of Merced | ||
County of Fresno | ||
Oro Lomo Water District GSA | Oro Loma Water District | |
Widren Water District GSA | Widren Water District | |
Northern Delta-Mendota | City of Patterson GSA | City of Patterson |
DM-II GSA | Del Puerto Water District | |
Oak Flat Water District | ||
Northwestern Delta-Mendota GSA | County of Merced | |
County of Stanislaus | ||
Patterson Irrigation District GSA | Patterson Irrigation District | |
Twin Oaks Irrigation District | ||
West Stanislaus Irrigation District GSA | West Stanislaus Irrigation District | |
San Joaquin River Exchange Contractors | City of Dos Palos GSA | City of Dos Palos |
City of Firebaugh GSA | City of Firebaugh | |
City of Gustine GSA | City of Gustine | |
City of Los Banos GSA | City of Los Banos | |
City of Mendota GSA | City of Mendota | |
City of Newman GSA | City of Newman | |
County of Madera GSA – Delta-Mendota | County of Madera | |
County of Merced GSA – Delta-Mendota | County of Merced | |
San Joaquin River Exchange Contractors GSA | Central California Irrigation District | |
Columbia Canal Company | ||
Firebaugh Canal Water District | ||
San Luis Canal Company | ||
Turner Island Water District GSA – Delta-Mendota | Turner Island Water District |