Great Lakes Water Levels 1918 to 2021

The five charts below graph annual water levels over the past 100 years.

Lake Michigan Water Levels

Please notice the regular intervals of periods of above average water levels and below average. The periods of high water levels last about six years. If that pattern continues we should be at the end of this current period of high water levels on Lake Michigan!

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Sourced from the US Army Corp of Engineers.