The Four Lakes Group is your local branch of the Sierra Club. We are an all volunteer organization dedicated to environmental education and conservation. We are one of six Groups in the Wisconsin Chapter.
The Four Lakes Group area includes more than 3,500 members in the counties of Columbia, Dane, Dodge, Green, Iowa, Jefferson, Lafayette, Rock and Sauk.
See what activities we have planned on our Outings/Events calendar.
Thank you participants and volunteers at the Garden Expo and Canoecopia!!
The following are events sponsored and hosted by the Sierra Club Four Lakes Group, the Wisconsin Chapter and other Groups and Sections within Wisconsin. Get outside and get active!
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Local News and Updates
Sierra Club Four Lakes Group - Annual Volunteer Night
April 23, 2026
Interested in volunteering in the Madison area? See the many opportunities you have at Volunteer Night!
Sierra Club's Adopted Highway Cleanup
April 12, 2026
We will provide trash bags and pick up tools. Please bring sturdy footwear and work gloves. Hope to see you there!
Observations in Nature
April 1, 2026
The Sierra Club will be hosting a nature walk through the University of Wisconsin Arboretum. We hope you will join us!