Water levels on the Great Lakes fluctuate seasonally by inches and by as much as several feet over a period of years, depending on long-term weather patterns. But they were previously bracketed by the record low of March 1964 and the record high of October 1986.
Now the lakes are headed into uncharted territory, and some want the U.S. and Canadian governments to do something about it.
website: http://www.chicagotribune.com/news/local/breaking/chi-lake-michigan-reaches-recordlow-level-20130205,0,7562811.story
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