Fall 2025 - California’s groundwater conditions, semi-annual update

The October Semi-Annual Groundwater Conditions Update includes information on California's groundwater levels, land subsidence, well infrastructure and the status of California’s groundwater monitoring conditions. The report provides timely updates on groundwater trends, helping communities track short-term changes in groundwater levels and inform adaptive strategies to support local decision-making.

Key findings from the report highlight California’s continued variability and uncertainty in the state’s climate, with Water Year (WY) 2025 receiving below-average statewide precipitation. Additional findings from the report include:

• Groundwater Levels;
• Land Subsidence;
• Well Infrastructure and Groundwater Monitoring Enhancements.