The U.S. Army Corps of Engineers, Detroit District, announces that Lakes Michigan, Huron, St. Clair and Erie set new monthly mean water level records for May 2020. These water level records were previously set in 1986 on Lakes Michigan and Huron and just last year in 2019 on Lakes St. Clair and Erie. As we enter the summer months, all of the lakes are either in their period of seasonal rise or are reaching their peak, except Lake Ontario, which will likely begin its seasonal decline this month.
Although most of the month was dry, the middle of May brought heavy rainfall to some areas of the basin, resulting in a wetter than average month for the Michigan-Huron and Erie basins. In the coming months, water levels are projected to continue to be near or above record high water levels on all of the lakes, except Lake Ontario. Significant erosion and flooding continues in many locations as water levels remain extremely high.
“The water level of Lakes Michigan and Huron has now risen above the peak level that was reached last year,” said John Allis, chief of the Great Lakes Hydraulics and Hydrology Office, Detroit District.