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State launches Cal Waters reporting; Delta users told to transition off ERIMS

Delta Measurement Experimental Consortium (convened by Office of the Delta Watermaster / State Water Board) · December 2, 2025
AI-Generated Content: All content on this page was generated by AI to highlight key points from the meeting. For complete details and context, we recommend watching the full video. so we can fix them.

Summary

The Office of the Delta Watermaster and partners walked through Cal Waters, the Division of Water Rights' new reporting system, explained PIN-based account linking and migration from legacy ERIMS, and urged Delta users to check geospatial place-of-use mappings and contact staff for missing rights.

Cal Waters, the State Water Board Division of Water Rights' new reporting platform, is live for reporters and replaces the legacy ERIMS interface, the Delta Measurement Experimental Consortium was told at a convening of state and partner technical staff.

The Watermaster's office demonstrated the Cal Waters test environment and its "My Annual Reports" workflow, showing how OpenET-derived monthly acre-feet totals and geospatialized places of use are displayed. Alex Burke, an engineer with the Office of the Delta Watermaster, said the demo was a test environment and that…

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