Office of Delta Watermaster
The Office of the Delta Watermaster was created as part of the Delta Reform Act of 2009. The Watermaster is an independent officer of the State, appointed to a four-year term by the State Water Resources Control Board, reporting jointly to the Water Board and to the Delta Stewardship Council.
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Contacts
Tel: (916) 319-8264
E-mail: deltawatermaster@waterboards.ca.gov
Recent Delta Watermaster Notices & Announcements
- 2025-09-08 MSS Report Response Letter
- Update for 2024 In-Delta Water Rights Reporting
Water Year 2024 reports and are now past due. If you report through the DeltaACP.com platform, please note the extended filing deadline was April 1, 2025. For questions regarding this update, contact the Office of the Delta Watermaster, deltawatermaster@waterboards.ca.gov.
