- Drowning the Dream, California's Water Choices at the Millennium - an environmental history of the state, focusing on water, population, and environmental change. Mono Lake Viewpoint - essays about an inland sea.
- Committed to restoring California's coast through sand replenishment, increasing the flow of natural sediment, wetlands recovery and improved water quality.
- Conserves, restores, and manages wetlands and associated habitats for North America's waterfowl. Includes calendar, regions and events page, news, photos, membership application and contact information.
- Tasked with developing programs and resources to reduce greenhouse gases. Includes a carbon footprint calculator and tips to save energy. [English, Spanish]
- CALPIRG's environmental action program. Contains news and facts about clean air, toxic pollution, safe drinking water, coastal protection and healthy schools. Information about legislation and how to donate money.
- A cooperative effort of environmental scientists at the University of California, Davis and collaborators at over thirty private, state, federal, and international organizations interested in environmental protection.
- A portal for information about natural and cultural resources in the Klamath River region of Northern California. Provides research services, regional links, and many full text documents.
- A environmental organization dedicated to the "Restoration of Ecolibrium" through the preservation of endangered and threatened plants. A California Nonprofit Public Benefit Corporation.
- Ecosystem knowledge center based in Bolinas, aiming to increase environmental awareness through science, art, education, and applied conservation. Overview of projects and staff.
- Working with others to conserve fish, wildlife, plants, and their habitats in California's Central Valley, Sierra Nevada, and San Francisco Bay areas.
- To protect natural, scenic, agricultural, and historic lands of the southern Sierra Foothills and Tulare Valley through stewardship, restoration and education.
- An environmental group that educates the south Asian community in the San Francisco Bay and Los Angeles areas. Includes lists of farmers markets, organic food stores and information about biodiversity dinner series.
- The University of California's Industry-University Cooperative Research Program provides matching grants for research in biotechnology, digital media, communications, microelectonics, information technology, semiconductor manufacturing, and other fields.