In November 2021, seven Groundwater Sustainability Agencies (GSAs) in the Cosumnes Subbasin formed the Cosumnes Groundwater Authority (CGA). With the responsibility of implementing the Cosumnes Subbasin Groundwater Sustainability Plan, CGA strives to be a hub of information regarding groundwater sustainability within the Cosumnes Subbasin.
2027 Cosumnes Subbasin Groundwater Sustainability Plan Amendment
- Groundwater Sustainability Plan – Plan Amendment Public Draft
- Groundwater Sustainability Plan – Plan Amendment Redline
- Groundwater Sustainability Plan – Plan Amendment Overview
Written Comments will be accepted until December 4, 2026 at info@cosumnesgroundwater.org or mailed to CGA, PO Box 532, Galt, CA 95632
Public Hearings will be held in January at each Groundwater Sustainability Agency. For a complete list of hearings, click here.
