The Sustainable Groundwater Management Act (SGMA) established a process for local Groundwater Sustainability Agencies (GSAs) to request that the California Department of Water Resources (DWR) revise the boundaries of a groundwater basin or subbasin in order to promote sustainable groundwater management.

The CGA intends to submit a request to DWR for a Basin Boundary Modification (BBM) by June 30, 2018. This modification would bring the Colusa County portion of the West Butte Subbasin that lies on the west side of Reclamation District 1004 into the Colusa Subbasin.

The CGA is interested in receiving feedback from local agencies and landowners. Click HERE for more information.

See the Basin Boundary Modification Page of this website for more information