International Upper Great Lakes Study

Findings of a five-year, peer-reviewed, investigation launched by the International Joint Commission in 2007 to evaluate options for regulating levels and flows in the Upper Great Lakes system and to assess the need for improvements. Originally focused on updating the regulation plan for Lake Superior outflows at Sault Ste. Marie, the Study was expanded to include an examination of whether physical changes in the St. Clair River were affecting the level of Lake Michigan-Huron.