By Bill Steffen of WOOD-TV - March 17, 2018

The level of Lake Superior is unchanged in the last month (very little snowmelt so far around the lake).  The level is 7" higher than one year ago and 13" higher than the March average. It's only 2" below the all-time highest level for March set in 1986. Lake Michigan/Huron is up 2" in the last month (runoff above average). The level is 10" higher than one year ago. 

That represents a one-year gain of 3.9 TRILLION gallons of water - that's a lot.  Lake Erie is up an incredible 11" in the last month (heavy rain coming into the river), up 7" year-to-year and is now 22" above the March average level. Lake Ontario is up 3" in the last month and is 11" above the March average.  Lake St. Clair is up 10" in the last month, up 9" in the last year and is now 23" above the record high March level.