logo image
  • Home
  • Documents
  • Financial / Compensation Reports
  • Board Meetings
  • Notices
  • Contact
(209) 826-4043
image
Sustainable Solutions for a Thriving Delta-Mendota Subbasin

Central Delta-Mendota Groundwater Sustainability Agency

Protecting Our Water, Sustaining Our Communities Eagle Field WD-Fresno County-Fresno Slough WD-Merced County-Mercy Springs WD-Oro Loma WD-Pacheco WD-Panoche WD-San Luis WD-Santa Nella County WD-Tranquillity ID-Widren WD
Contact Us

Groundwater Sustainability Agency in the Delta-Mendota Subbasin

Committed to Transparency and Compliance

We are a public agency dedicated to providing essential information as mandated by The Brown Act and the California Public Records Act. Our commitment to transparency ensures that all stakeholders have access to the information they need. Browse our website to learn more about what our Groundwater Sustainability Agency in the Delta-Mendota Region does.

Our Role in Sustainable Groundwater Management

As the groundwater sustainability agency for the Delta-Mendota Subbasin, we play a crucial role in overseeing the development and implementation of sustainable groundwater practices. Our agency was established under the framework of the Sustainable Groundwater Management Act, which was enacted in 2014 to promote responsible management of groundwater resources across California.

Your Source for Information and Resources

This website serves as a comprehensive resource for the Central Delta-Mendota GSA, providing pertinent information, meeting announcements, and other relevant documents related to our joint agency's activities and initiatives. Please explore the site to stay informed about our efforts to foster sustainable groundwater management.
Groundwater Health: Our Commitment, Your Legacy

Learn about our groundwater sustainability agency

Contact Us

About Groundwater Sustainability Agency

A Groundwater Sustainability Agency (GSA) is one or more local public agencies that implement the provisions of the Sustainable Groundwater Management Act. To be eligible to serve as a GSA, an agency must be a local public agency with water supply, water management, or land use management responsibilities with the groundwater basin.
The Delta-Mendota Subbasin includes 3 cities, counties, public water agencies, irrigation districts, and a resource conservation district. Some GSAs in the Delta-Mendota Subbasin only include a single agency. Other GSAs include multiple agencies.

The Purpose of a Groundwater Sustainability Agency

A fundamental aspect of the Sustainable Groundwater Management Act (SGMA) is the preservation of local control over groundwater resources. Groundwater Sustainability Agencies (GSAs) that are locally formed are tasked with ensuring compliance with SGMA requirements, as well as managing our region's groundwater resources sustainably.
Under SGMA, GSAs are required to develop Groundwater Sustainability Plans (GSPs), take necessary actions to achieve or maintain sustainability in the subbasin, and actively involve local stakeholders in the SGMA process.
To facilitate the effective implementation of GSPs, SGMA provides the following authorities to all GSAs:
  • Adopt rules, regulations, ordinances, and resolutions to implement SGMA.
  • Monitor compliance and enforcement.
  • Require registration of groundwater wells.
  • Require appropriate measurement devices and reporting of extractions.
  • Investigate, appropriate, and acquire surface water rights, groundwater, and groundwater rights into the GSA.
  • Acquire or augment local water supplies to enhance the sustainability of the groundwater basin.
  • Propose and collect fees.
  • Adopt and fund a GSP according to existing laws.
The GSAs in the Delta-Mendota Subbasin may choose to use some, all, or none of these authorities.
Read More: SGMA Frequently Asked Questions
Central Delta-Mendota GSA Eagle Field WD-Fresno County-Fresno Slough WD-Merced County-Mercy Springs WD-Oro Loma WD-Pacheco WD-Panoche WD-San Luis WD-Santa Nella County WD-Tranquillity ID-Widren WD
Contacts
(209) 826-4043
ADMINISTRATION@CDM-GSA.COM
12931 State Highway 33 Santa Nella CA 95322-9759 US
© Copyright 2025 Central Delta-Mendota GSA. All rights reserved. All registered trademarks herein are the property of their respective owners.