2019-Aug-12
August 11 Water Levels Report
Water levels across the Great Lakes remain high. Lake St. Clair, Erie, and Ontario are forecasted to exceed their highest recorded monthly average for August by 2 to 5 inches, Lake Superior is projected to meet its record, and Lake Michigan-Huron will be 2 inches below its record. Lake levels exceed last year by 8 to 15 inches on all lakes except for Lake Ontario, which is 27 inches above. The forecasted levels for September 9th for Lakes Superior, Michigan-Huron, St. Clair, Erie and Ontario are 1, 2, 4, 6 and 12 inches, respectively, below their current levels, in accordance with the usual seasonal declines.
Outflows from all lakes: Lake Superior’s through the St. Mary’s River, Lake Michigan-Huron’s through the St. Clair River, Lake St. Clair through the Detroit River, Lake Erie into the Niagara River, and Lake Ontario into the St. Lawrence River are all projected to be above average in August.
High water levels and potentially record high water levels are expected to persist for at least the next six months, so flood prone areas are expected to remain vulnerable.
