The Redwood Region
The Redwood Chapter of the Sierra Club is a geographically vast region composed of six local groups and encompassing all or part of nine counties in Northwest California.
Although the geography and environmental challenges vary, we share one of the most remarkable regions in the United States and are committed to amplifying the power of our 11,000+ members and supporters to defend everyone’s right to a healthy world. We're proud to be a part of the most enduring and influential grassroots environmental organization in the United States.
Links to local Group websites
Lake Group
Mendocino Group
Napa Group
North Group (Del Norte, Humboldt, Trinity and Western Siskiyou Counties)
Solano Group
Sonoma Group
Mendocino Group
Napa Group
North Group (Del Norte, Humboldt, Trinity and Western Siskiyou Counties)
Solano Group
Sonoma Group
Contact Us
Mailing Address: P.O. Box 466, Santa Rosa, CA 95402