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
Madison Volunteer Night
October 22, 2026
Looking for a fun way to get involved in the Madison area? – join us for volunteer night!
Prairie Seed Collecting
October 22, 2026
Help gather native wildflower seed for Arboretum prairie and savanna restorations. Tools and training provided!
Lunch and Learn: Line 5 Updates and Action
October 21, 2026
Join us for a Lunch and Learn to get the most recent updates on Enbridge's Line 5 pipeline, which threatens the Great Lakes and all the waters it runs through