System News

March 6, 2024: Bug fixes and enhancements have been deployed for the following pages:


  • Home Page - Notifications Under Construction Banner
  • Elevation Readings Grid - Decimal Precision Fix
  • Elevation Readings Grid - Valid RP History Error Icon
  • Elevation Reading Detail - Reference Point and Ground Surface Elevation from History
  • Elevation Reading Detail - Collection Type Label Update
  • Edit Reading - Apply RP History Feature
  • Edit Reading - Reference Point and Ground Surface Elevation from History
  • Edit Reading - Collection Type Radio Button Label Update
  • Edit Import Reading - Duplicate Measurement Date and Time Error Message
November 29, 2023: Bug fixes and enhancements have been deployed for the following pages:

  • Edit Import Reading
  • Edit Well
  • Elevation Readings Grid
  • Map Viewer
  • Wells / Organization Wells Grid
  • User Sign In Window
August 30, 2023: The new CASGEM Online System is Live! Please update your bookmarks to https://casgem.water.ca.gov
External Resources

PDFCASGEM Guides

System guides and manuals are available at the CNRA Open Data Platform

View Guides

WebsiteCASGEM Program

Information about the CASGEM program, including DWR contacts and brochures, are available here

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Website California's Groundwater (Bulletin 118)

The State's office publication on the occurrence and nature of groundwater in California

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WebsiteCalifornia's Groundwater Live

California's latest groundwater information and conditions

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DataData and Tools

Accessible water data to make informational management decisions

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PDFFrequently Asked Questions

Frequently asked questions regarding the CASGEM program

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WebsiteStatewide Groundwater Management

DWR's role in groundwater management

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