Sightline Institute
- Nonprofit research and communication center that promotes a sustainable economy and way of life in the Pacific Northwest. Includes a regional sustainability scorecard and fact sheets and other resources on the region and environmental topics.
- http://www.sightline.org

Bonneville Environmental Foundation
- Private, non-profit foundation that funds environmentally preferred energy and watershed projects and markets environmentally preferred power to utilities in the Pacific Northwest.
- http://www.b-e-f.org/

Pacific Northwest Tides and Currents
- Interactive site provides daily plots and monthly tables of predicted tidal heights and currents for various stations around Puget Sound, the San Juan Islands, the Gulf Islands, Desolation Sound, and the Strait of Georgia.
- http://www.dairiki.org/tides/

The Brainerd Foundation
- Foundation dedicated to protecting the environment of the Pacific Northwest. Web site describes its support of grassroots-oriented projects in Washington, Oregon, Idaho, Montana, Alaska, British Columbia, and the Yukon Territory.
- http://www.brainerd.org/

Birds of the Pacific Northwest
- Photographs of birds and mammals in Oregon, Washington, and British Columbia.
- http://www.christinevadai.com

Cascadia Region Earthquake Workgroup
- Not-for-profit coalition of private and public representatives working together to improve the ability of Cascadia Region communities to reduce the effects of earthquake events.
- http://crew.org/

Cascadia
- Provides information on the geology and paleontology of the Northwest United States and Coastal Western Canada. Includes links, photo gallery, and list of books for amateur paleontologists
- http://www.cnw.com/~mstern/