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Wisconsin's Great Lakes

Lake Michigan and Lake Superior

The Great Lakes hold one–fifth of the world's fresh water and Wisconsin's Lake Michigan and Lake Superior waters are critical for those who live along them and for the state's economy, environment and quality of life. The DNR's Office of Great Waters is charged with implementing a comprehensive program to protect the lakes, identify problems and solutions and serve as a contact point for the Great Lakes community in Wisconsin.

Areas of Concern

Learn about Wisconsin's five Areas of Concern (AOCs).

Wisconsin's Great Waters Photo Contest

Winning photographs are featured in the 2019-2020 "Wisconsin's Great Waters" calendar.

New Videos Available

Watch three new videos about Areas of Concern principals, highlighting projects in the St. Louis River AOC.