April 2021
April 25 Water Levels Report
Month to date accumulated precipitation is 55-71% of average for Lakes Michigan, Huron, Erie and Ontario, whereas Lake Superior is at 154% of average. Water levels continue to be well above average and near record high levels. Lake Michigan-Huron continues to be below the level it was at this time last year – see first graph below. All the lakes are now lower than they were at this time last year. -
From a month ago the water levels on Lakes Superior, Michigan-Huron, St Clair, Erie and Ontario are up 4, 0, 2, 1 and 7 inches respectively. Lakes Superior, Michigan-Huron, St Clair, Erie & Ontario, are lower by 5, 14, 15, 17 & 28 inches, respectively, than they were at this time last year. Lakes Superior, Michigan-Huron, St Clair & Erie are 9, 22, 19, &
