San Diego Regional Water Quality Control Board
- Covers regional water quality and rights regulation, board meetings, laws, funding, watershed management, enforcement, citizen involvement, news and education.
- http://www.waterboards.ca.gov/sandiego/

Project Pacific
- Devoted to actions benefiting the ocean and its users. Includes board member biographies, donation and membership forms, sponsor listing and contact information.
- http://www.projectpacific.org/

San Dieguito River Valley Conservancy
- Information about natural open space park planned for the San Dieguito River Valley. The park will someday extend from the ocean at Del Mar to Volcan Mountain, just north of Julian.
- http://www.sdrvc.org/

Air Pollution Control District
- Formed to protect the public from the harmful effects of air pollution. Includes mission statement, related links, and contact information.
- http://www.sdapcd.org/

San Diego National Wildlife Refuge Complex
- Includes information about wildlife refuges in the Tijuana Slough, Sweetwater Marsh, and South Bay.
- http://www.fws.gov/sandiegorefuges/

Tijuana Estuary
- Home of the Tijuana River National Estuarine Research Reserve and the Tijuana Slough National Wildlife Refuge, located in Border Field State Park. Includes information about events, visitor center, and activities.
- http://www.tijuanaestuary.com/

San Diego Tracking Team
- Conducts wildlife monitoring and research, and offers outdoor and environmental education programs. Events, projects, and profiles of team members.
- http://www.sdtt.org/

Superfund Basic Research Program
- Includes mission, project descriptions, news, events, resource links, and contact information.
- http://superfund.ucsd.edu/

Back Country Land Trust
- Seeks to preserve land in the back country area. Includes project details, mission statement, membership form, and contact information.
- http://www.bclt.org/

San Diego Baykeeper
- Dedicated to the principal that protecting California's precious coastal waters is the job of every citizen. Includes program listing, membership information, calendar of events, and listing of current cases in litigation.
- http://www.sdbaykeeper.org/

Volcan Mountain Preserve Foundation
- Includes history of the mountain, photos and descriptions of various areas, accomplishments and "to do" lists, and donation information.
- http://www.volcanmt.org/

SANDAG: Shoreline Management
- Current projects, committee information and contacts, and related publications (PDF format).
- http://www.sandag.org/index.asp?subclassid=32&fuseaction=home.subclasshome

The Palomar Audubon Society
- Conservation and restoration of the area's natural ecosystems. Includes mission statement, programs and events listings, field trips, conservation notes, and contact information.
- http://www.palomaraudubon.org/

Resource Conservation District of Greater San Diego
- Technical, financial and educational assistance to help both rural and urban communities conserve, protect, and restore natural resources. Contains resource listings, district description and information, related links and contact information.
- http://www.rcdsandiego.org/

Bird Friends of Lake Murray and San Diego County
- Photos, sounds, and descriptions of local birds, descriptions of popular bird-watching spots, bird lifecycle information, bird search, and guestbook.
- http://www.bird-friends.com/

CERES - San Diego County
- An index to environmental information for the county. Extensive reference includes road, weather, and flood conditions, demographics, historical resources, and maps.
- http://ceres.ca.gov/geo_area/counties/San_Diego/

BEACH Watch
- A program designed to strengthen U.S. beach water protection programs and water quality standards, better inform the public and promote scientific research.
- http://www.epa.gov/ost/beaches/

San Diego Oceans Foundation
- Non-profit organization devoted to stewardship of the region's marine environment. News, articles, and programs, including Project Yukon.
- http://www.sdoceans.org/

Sierra Club: San Diego Chapter
- Serves both San Diego and Imperial Counties. Events calendar, environmental issues, newsletters, and groups.
- http://sandiego.sierraclub.org/

Recent Earthquakes
- Map from the USGS showing recent Earth shakings in the San Diego area.
- http://quake.wr.usgs.gov/recenteqs/Maps/117-33.html

San Diego Land Conservancy Coalition
- The Conservancy promotes public/private partnerships and environmental education. Features a map with links to conservancies in San Diego County.
- http://www.sdlcc.org/

San Diego's Ocean
- Resource of links to oceanic data, including waves, water, weather, tides, surf cams, and maps. Provided by the director of Scripps Institution of Oceanography Library.
- http://scilib.ucsd.edu/sio/ocean/