Basin Boundary Modifications
The Sustainable Groundwater Management Act (SGMA) established a process for to ask DWR to revise the boundaries of existing groundwater basins or subbasins, including establishing new subbasins. We developed the after extensive outreach to SGMA advisory groups, partners, local agencies, and members of the public. The Basin Boundary Emergency Regulations were adopted on October 21, 2015 and the provisions of the emergency regulation went into effect on November 16, 2015.
After the Basin Boundary Emergency Regulations were adopted DWR provided an online to inform local agencies and the public about the existing Bulletin 118 groundwater basins and other relevant geologic and geographic data. DWR’s enabled local agencies to submit their requests for Basin Boundary Modifications online and the public to view those requests and public comments.
The Final 2018 Basin Boundary Modifications were developed after a technical review of the basin boundary modification requests and public comments. DWR held a public meeting and a public presentation to the California Water Commission to present the Draft Basin Boundary Modifications and technical review process. The Final Basin Boundary Modifications were released February 11, 2019.
Access the Results
- Final 2018 Basin Boundary Modifications released February 11, 2019
- The next Basin Boundary Modifications period is not scheduled and is not anticipated prior to 2022
Frequently Asked Questions
Answers to: Frequently Asked Questions on Basin Boundary Modifications
The Final 2016 Basin Boundary Modifications were developed through DWR's technical review of basin boundary modification requests and public comment made during the submission period, January 1, 2016 through March 31, 2016. DWR then held a series of public meetings to present the Draft Approved Basin Boundary Modifications, provide an overview of the BBMRS and technical review process, answer clarifying questions and receive further public comments on the Draft Approved Basin Boundary Modification submissions. After a technical review of the requests and public comments, DWR developed the list of 2016 Final Basin Boundary Modifications and adopted them into the 2016 Bulletin 118 Interim Update.
Basin Boundary Modification Request System
The Basin Boundary Modification Request System (BBMRS) allows users to view basin boundary modification requests made by local agencies.
Basin Boundary Assessment Tool
The Groundwater Basin Boundary Assessment Tool (BBAT) is a web-based application to inform local agencies and the public about the existing Bulletin 118 groundwater basins and other relevant geologic and geographic data.