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). The CGA is charged with the responsibility of implementing the Cosumnes Subbasin Groundwater Sustainability Plan and meet the California Sustainable Groundwater Management Act (SGMA) 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

We are pleased to announce the launch of the Cosumnes Groundwater Authority’s new website: 

Over the next couple of months, we will gradually transition from to this new website. Click the button below to access the new website and be sure to bookmark it for future reference!

CGA Meetings

The CGA meets on the third Mondays of the month at 9:00a (unless noted otherwise). 

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

Additionally, a Zoom call-in option will also available:
Refer to the Meetings Page for CGA Meeting Zoom Info

*Refer to the Agenda Packet or the Meetings Page to confirm the location for each upcoming CGA meeting. Due to COVID, some meetings may be held virtually

Next Meeting: March 21, 2022, 9:00 am

(Due to the number of pages for the regular agenda packet,
two versions are available for your convenience):

Location: Community Conference Room at the Galt Police Station (455 Industrial Dr., Galt, CA 95632)
Remote participation option also available –
Meeting ID:  823 9396 4507
Call in Number: 1-669-900-9128


Click here to find past CGA meeting materials

Have Questions? If you have any questions regarding the Cosumnes Groundwater Authority please contact Austin Miller, Cosumnes Subbasin Groundwater Sustainability Plan Interim Plan Manager and CGA Administrator, 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. 

Past CGA Meetings

February 18, 20222:  Agenda Packet

January 21, 2022: Agenda Packet 

December 20, 2021: Agenda Packet | Minutes

November 29, 2021: Agenda Meeting Packet | Minutes and Resolutions