The Colusa Groundwater Authority (CGA) is the Groundwater Sustainability Agency responsible for implementing the Sustainable Groundwater Management Act in the Colusa County portion of the Colusa Subbasin and the county portion of the Butte subbasin outside of Reclamation District 1004. The CGA is a twelve-member Joint Powers Authority that was formed on June 29, 2017.
CGA Member Agencies:
- County of Colusa
- City of Colusa
- City of Williams
- Colusa County Water District
- Glenn-Colusa Irrigation District
- Princeton-Codora-Glenn Irrigation District and Provident irrigation District (one seat)
- Maxwell Irrigation District and Westside Water District (one seat)
- Reclamation District 108
- Reclamation District 479
- Colusa Drain Mutual Water Company
- Private Pumper Representative 1*
- Private Pumper Representative 2*
*The Private Pumper representatives on the CGA Board are members of the Colusa County Groundwater Commission and are appointed to the CGA Board by the Colusa County Board of Supervisors.
Click the links below to view/download CGA Documents:
- Joint Powers Agreement Establishing the Colusa Groundwater Authority
- CGA Memorandum of Agreement
- Conflict of Interest Code
- CGA Board of Directors
- CGA GSA Notification (DWR Portal)
- Notice of Intent to Develop a GSP for the Colusa Subbasin (DWR Portal)
- Notice of Intent to File a Basin Boundary Modification (DWR Portal)
- Annual Financial Audit, Fiscal Year 2019/2020
- Annual Financial Audit, Fiscal Year 2018/2019
- Annual Financial Audit, Fiscal Year 2017/2018
- CGA 5-year Budget (from 2019 Fee Study for the CGA)
- Colusa Subbasin Communication and Engagement Plan (August 2019)