The Great Waters Group represents Milwaukee, Waukesha, Ozaukee and Washington counties in southeast Wisconsin, on the shores of Lake Michigan. Our outings program has started back up so keep an eye on the Calendar and subscribe to our monthly e-newsletter. Use the buttons below to Donate, Join the Sierra Club or purchase a Gift Membership. These all bring funds back for the work of our local Great Waters Group.
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Local News and Information
Join us for summer outings
May 20, 2026
The Great Waters Group will offer a variety of outings this summer, from joining the Ice Age Trail Alliance to help reroute trail on National Trails Day on June 6, to touring the sustainable Ravensholme Farm in Waukesha on July 11.
May program: Broken Funding, Better Future: Fixing Public Transit with RTA
May 20, 2026
MCTS is facing a fiscal crisis. Wisconsin transit advocates want to address transit funding and regional transit authorities in the next legislative session. Come learn more on Tuesday, May 26, at the Wauwatosa Library.
Cheryl Nenn of Milwaukee Riverkeeper named Environmental Hero
January 21, 2026
The Great Waters Group is pleased to announce that it has named Cheryl Nenn, the Riverkeeper for Milwaukee Riverkeeper, as its Environmental Hero of 2025 for her work protecting our waters.