Water is going away. There is a report that Lake Michigan and Lake Huron levels have dropped 4 inches just in the last month. Temperature causing evaporation had something to do with it. We have had this happen periodically.
I'm sure you remember times the levels were high and caused erosion. We had a near record high two years ago. Currently the drop in water reported by U.S. Army Corps of Engineers is 3 trillion gallons.
Appreciate the water we have by not over using it. See more here.