Resources

CalWATRS Guidance Materials

Accessing CalWATRS
Ownership and Agent Updates
- Requesting to be Made Agent of a Water Right
- Requesting a Change of Ownership of a Water Right
Reporting
- Filing an Annual Report (Appropriative Right)
- Submitting Measurement Data in Annual Reports
Applications and Petitions
- Viewing an Application Record and Related Documents
- Filing a Change Petition

Letters

Training Videos

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Contact Us

CalWATRS general email (ideas, questions, concerns)

CalWATRS-Help@waterboards.ca.gov

(916) 341-5333

(Page last updated 07/23/2026)

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Water is a precious resource in California, and maintaining its quality is of utmost importance to safeguard the health of the public and the environment.

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