May 20: Yellow perch season opens on Green Bay, the Fox River and other Green Bay tributaries through March 15 with a bag limit of 10. Yellow perch season on Lake Michigan opens June 16.
May 28: Muskellunge season opens north of Hwy. 10.
June 4-5: Free Fishing Weekend. No license or stamps required to
fish inland waters or outlying Wisconsin waters of the Great Lakes
and Mississippi and St. Croix Rivers. All bag and size limits and
other regulations apply.
June 5: State Parks Open House Day, free admission to all state
parks, forests and trails.
June 16: Yellow perch season opens on Lake Michigan with a bag
limit of five fish.
June 18: Northern zone bass season goes from catch-and-release
to daily bag limits.