Cosumnes Groundwater Authority

Cosumnes Groundwater Authority (CGA)

In November 2021, the 7 Groundwater Sustainability Agencies (GSAs) within the Cosumnes Subbasin formed the Cosumnes Groundwater Authority (CGA). Charged with the responsibility of implementing the Cosumnes Subbasin Groundwater Sustainability Plan (a requirement of the California Sustainable Groundwater Management Act, the new CGA Board of Directors will be meeting November 29 to establish the new organization and meet the Sustainable Groundwater Management Act requirements for the Cosumnes Subbasin.

  1. Joint Powers Authority (JPA) agreement to form the Cosumnes Groundwater Authority for GSP implementation
  2. Initial Funding and Revenue Agreement

CGA Meetings

Until the CGA has an independent website, the meeting notice and agenda will be posted here on the Cosumnes Subbasin SGMA Working Group website. 

Initial Meeting – November 29, 2021 | 9:00 AM

Meeting Information
Location: Community Conference Room at the Galt Police Station
455 Industrial Dr., Galt, CA 95632

Additionally, a Zoom call in option is also available:
Zoom Call In Number: 1-669-900-9128
Zoom Meeting ID: 816 4293 471
Zoom Link:

Materials: Meeting Packet 

Have Questions? If you have any questions regarding the Cosumnes Groundwater Authority please contact Austin Miller, Cosumnes Subbasin Groundwater Sustainability Plan Interim Plan Manager, at 916-526-5447 or

Want to receive updates about the CGA? If you are already subscribed to the Cosumnes Working Group list-serve, you will automatically receive updates.