May 2026
May 24 Water Levels Report
Lake Michigan-Huron is now 7 inches higher than it was at this time last year.
From a month ago, the water levels on Lakes Superior, Michigan-Huron, St. Clair, Erie & Ontario are up 7, 4, 4, 4 & 6 inches, respectively. Lake Superior, Michigan-Huron, St. Clair & Ontario levels are up 5, 7, 2 & 13 inches, respectively, from last year. Lake Erie levels are lower by 2 inches than they were at this time last year. Lake Superior, Michigan-Huron, St. Clair, Erie & Ontario are 2, 2, 6, 3 & 13 inches above their long-term May averages. All the lakes remain well below their May record highs.In a month, Lakes Superior, Michigan-Huron, St. Clair, Erie & Ontario levels are expected to rise by 3, 3, 0, 1 & 0 inches, respectively.
Lake Superior’s outflow through