Groundwater can well up from the depths of a lake and melt the ice. So don’t set out on the ice too early this ice fishing season.  

Rebound in Water Levels Eases Great Lakes Fears

July 15, 2014 | Categories: Fun Stuff

By Julie Bosman THE NEW YORK TIMES • Sunday June 29, 2014 Photo by Mark Kauzlarich | The New York Times

Lakes Michigan, Huron and Superior are at least a foot higher than they were a year ago, and they are expected to rise 3 more inches over the next month. Lake Ontario and Lake Erie are 7 to 9 inches higher than a year ago.