A picture (or two) says a thousand words: Look at the difference in rainfall and departures across Lower Michigan, especially from Mid Michigan to the Indiana and Ohio Borders!
An almost unbelievable contrast in rainfall amounts can be seen, especially with the torrential rains that just occurred in mid-Michigan. Rainfall totals of 10 to 15" for the month have been observed (normal rainfalls lie around 3 inches for the entire month). Rainfall departures in these areas mount in upwards of 300+% of normal! The heaviest corridor of rain extends from Mid Michigan across Lake Michigan into a large portion Upper Michigan and Wisconsin. The run-off of the heavy rains should help keep Upper Great Lakes into the Lower Great Lakes levels high for the summer, if not add to them.
Latest forecast for the Great Lakes, Lake St Clair and adjoining rivers from the Corp of Engineers:
Many areas are several feet above low water datum and also above their long term averages.