Welcome to the home page of the Main San Gabriel Basin Watermaster, an agency charged with administering adjudicated water rights and devoted to the management and protection of groundwater resources, within the watershed and groundwater basin known as the Main San Gabriel Groundwater Basin in Los Angeles County, California.

To learn more, please visit: www.thewatersthatconnectus.com 

Key Well Level

Historic Low:           169.4 ft.                        November 21, 2018

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Historic High:          295.30 ft.*                               July 20, 1983

Current Level:         195.8 ft.                    As of April 9, 2021
 
                                                  Since entry of judgment, 1973

Legal Notices

Proposed Order Re SOL Long

Proposed Order Re IBY LLC.

Proof of Service

Notice of Petition for Intervention- SOL Long

Notice of Petition for Intervention- IBY LLC. 

Notice of Availability

Designee to Receive Future Notices for and on Behalf of Defendant Molson Coors USA LLC.

Proof of Service

Order on Petition for Appointment of Members for Year 2021 Term

Order Aproving Amendment to Storage and Export Agreement

Notice of Availability

Order Approving Intervention After Judgment

Designee to Receive Future Notices for and on Behalf of Defendant Sterling Mutual Water Company

Designee to Receive Future Notices for and on Behalf of Defendant Los Angeles County Sanitation Districts

News