From ArborWiki

20,000 acre state park, with headquarters in Chelsea.

Science activities are held at the Eddy Discovery Center.

To do list:

• Gerald E. Eddy Discovery Center
• Waterloo Natural History Association
• Big Portage Lake Beach
• Portage Lake Campground
• Sugarloaf Lake
• Sugarloaf Campground
• Waterloo Horseman's Association

Web site: http://www.michigandnr.com/parksandtrails/ParksandTrailsInfo.aspx?id=506