This undated aerial photo provided Jan. 26, 2012, by the U.S. Army Corps of Engineers shows a view looking southward of the International Bridge crossing the St. Marys' River, connecting Sault Ste. ... more 
This undated aerial photo provided Jan. 26, 2012, by the U.S. Army Corps of Engineers shows a view looking southward of the International Bridge crossing the St. Marys' River, connecting Sault Ste. Marie, Mich., right, and Sault Ste. Marie, Ontario, left, city of the same name. Hydroelectric dams and a series of gates near the bridge control water flows southwasrd from nearby Lake Superior through the river toward Lake Huron. Scientists are studying whether to change policies on releasing the water because of a debate over Great Lakes levels. (AP Photo/U.S. Army Corps of Engineers, Richard MacDonald) less 
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Associated Press | Photo By U.S. Army Corps of Engineers, Richard MacDonald
Tue, Mar 27, 2012 5:26 PM EDT