Sep 01, 2022 — Water levels on Lake Ontario and the St. Lawrence River dropped significantly between July and August. The International Joint Commission held a web conference this week about the ...

Lake Ontario shot up 11 inches since March. Yellow highlights the difference from the water level last month, in March 2023. In the past year the lake level changes have varied from lake to lake.

Lake Ontario is projected to be 1 to 6 inches above long-term levels from August to November but then 1 to 2 inches below long-term average levels in December and January.

The lake, which Michigan shares with Ontario, ... It rises to 50.2 in June and 65.5 in July before topping out at 69.1 in August. In February and March, lake temperatures average in the low 30s.