Lakes Michigan and Huron (hydrologically one lake) are on course to have record water levels this month:
After late snowstorms and record-setting rainfall this spring, Lake Michigan’s water levels are projected to rise to a record level this month.
The rising water, which could swell more than 635 mm above its long-term monthly average, is expected to tie the previous June peak set in 1986.
May’s record-setting torrential rainfall was a catalyst for Lake Michigan’s surge in water levels, said Keith Kompoltowicz chief of watershed hydrology with the U.S. Army Corps of Engineers’ district office in Detroit.
The National Weather Service’s Chicago office on Friday tweeted that water levels already had hit a record — but the service was referring to a daily measurement, and the Army Corps only counts a full month’s average levels for record purposes.
Here's the official chart as of yesterday:
Meanwhile, Lake Ontario has broken its record already, and by a lot:
And all that fresh water just goes down the St Lawrence right into the Gulf Stream...