- California Department of Water Resources
- Describes the California water plan, conservation efforts, and drought response. Includes statewide hydrologic data, programs, and projects.
- California Groundwater Association (CGA)
- Nonprofit organization of contractors, manufacturers, hydrologists, engineers, government employees, and others involved in promoting groundwater protection.
- Groundwater Resources Association of California
- Dedicated to groundwater resource management. With bylaws, legislative guidelines, membership information, and publications.
- University of California Center for Water Resources
- Includes purpose, research, publications, programs, and current news.
- USGS California Water Science Center
- Offers information about Califorina, its biology, geography, geology and water. Also history and related data.
|