John Allis, Chief of the Great Lakes Hydraulics and Hydrology Office said, "Not only have water levels on Michigan-Huron broken records the past two months, but they have been very near record lows for the last several months before then. Lake Michigan-Huron's water levels have also been below average for the past 14 years, which is the longest period of sustained below average levels since 1918 for that lake."
The current record low water levels on Lake Michigan-Huron are the result of lower than average snowfall during the winter of 2011-2012, coupled with the very hot and dry summer. Together these conditions led to only a 4 inch seasonal rise of Lake Michigan-Huron in 2012, compared to an average rise of 12 inches. Also, evaporation was significantly above average during the summer and fall months and contributed to a very rapid seasonal decline.
Access a release from USACE-Detroit (click here). Access the USACE-Detroit website for more information on Great Lakes water levels (click here). [#Glakes/Climate]