Great Lakes is losing 9.5 billion litres of water a day

The Great Lakes basin is losing almost 9.5 billion litres of water a day and must be patched up by the Canadian and American governments, environmental groups said Tuesday.
Navigation dredging, riverbed mining and shoreline alteration on the St. Clair River near Port Huron, Mich., and Sarnia, Ont., have affected the flow of the Great Lakes and is draining water into the Atlantic Ocean at a rate that's three times greater than original estimates. Water levels in lakes Michigan and Huron and the Georgian Bay have fallen 60 centimetres since 1970.
The loss of water is senseless and will negatively affect water quality in the Great Lakes, as well as boating, fishing and commercial shipping.