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!
Show activities between:
and
| When | Earliest: Latest: |
| What |
|
| Word or Phrase | Word or phrase to search for: |
| Leader | All or part of leader name to search for: |
Made all your selections above?
or
No Matching Activities Found
Processing please wait.
Loading
| Date | Activity (click title for full description) | Sponsor | Category | Type | Difficulty | Links |
|---|
Loading
Loading ...
Legend:
Outing
Team/Committee meeting 
Volunteer Event 
Activist event 
Multiple events (map only)
Show activities between:
and
Local News and Updates
Observations in Nature Walk
August 5, 2026
Join us for a morning ramble through the University of Wisconsin Arboretum!
Dark Skies, Bright Future Program
July 29, 2026
Join us online for a fun evening to celebrate the grassroots advocacy of the Wisconsin Chapter and explore how our work matters to the parts of our environment that come alive at night.
Atwoodfest
July 25-26, 2026
Join us at this popular east side Madison music festival to help spread the word about the Sierra Club and our activities