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  • Outage Alert: UPDATE: The maintenance to the USGS time-series data processing system has been completed. The backlog in recent time-series data is now being processed and delivered to the Water Data for the Nation.
  • Explore the NEW USGS National Water Dashboard interactive map to access real-time water data from over 13,500 stations nationwide.

Groundwater levels for California

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Choose Site Selection Criteria
There are 44,099 sites with groundwater-level measurements. Choose at least one of the following criteria to constrain the number of sites selected.

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