Wet conditions continued across the Lake Michigan-Huron basin in June and resulted in water levels rising to record highs by the end of the month. Conditions were relatively drier in the Lake Superior basin, but Lake Superior remains above record high water levels for this time of year.
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Wet conditions continued across the upper Great Lakes basin in May. Lake Superior has exceeded record high water levels for this time of year and water levels of Lake Michigan-Huron are also now approaching record high values.
Water levels of Lake Superior and Lake Michigan-Huron remain well above average, and Lake Superior has the potential to reach or exceed record highs in May should wet conditions continue.
The above-average levels coupled with strong winds and waves continue to result in shoreline erosion and coastal damages across the upper Great Lakes system.
Very wet conditions continued across the upper Great Lakes basin in February, and water levels of Lake Superior and Lake Michigan-Huron remain well above average.
Generally wet conditions persisted across the upper Great Lakes basin in January, and water levels of Lake Superior and Lake Michigan-Huron remain well above average.
December, like October and November, saw wet conditions across the upper Great Lakes basin, and water levels of Lake Superior and Lake Michigan-Huron remain well above average.
Following extremely wet conditions in October and relatively wet conditions in November, water levels of Lake Superior and Lake Michigan-Huron remain well above average.
The International Lake Superior Board of Control, under authority granted to it by the International Joint Commission (IJC), advises that the gate setting of the control structure at the head of the St. Marys Rapids will be reduced prior to winter, beginning next week.
Extremely wet weather and a significant rise in Lake Superior levels will result in St. Marys River outflows being increased in November.