The Army Corps of Engineers Detroit District says it expects water levels on Lake Michigan to stay at record highs for several months. There is a cyclical component to Great Lakes levels annually, peaking in the summer after spring runoff and dropping back through the wintertime. As of May 20th, Lakes Michigan and Huron have already reached measurements equal to 2019's July peak. Chief of Great Lakes Hydrology Christopher Warren says the cure to bring the lakes back towards normal is a prolonged dry spell in the region. 

Warren says most other variables, such as temperature, have contradicting effects on the factors which drive water depth.