News Releases

Water levels on Lake Ontario have begun to decline more rapidly in recent days due to a combination of continued record-high outflows, declining inflows from Lake Erie and generally drier weather across the basin. 

Lake Ontario water levels continue to decline slowly as the Board is maintaining record outflows of 10,400 m3/s (367,270 cubic feet per second). 

Water levels are declining throughout the system as warmer, drier weather and record Lake Ontario outflows of 10,400 m3/s (367,270 cubic feet per second) continue. 

Water levels are expected to decline throughout the system this week as drier conditions are forecast and record Lake Ontario outflows of 10,400 m3/s (367,270 cubic feet per second) continue.  At its meeting on June 28th, the Board reached consensus to maintain the current…

The Board is doing everything possible to provide all possible relief to Lake Ontario and upper St. Lawrence River residents, while considering impacts throughout the system.

LAKE ONTARIO OUTFLOWS TO BE MAINTAINED ABOVE NAVIGATION LIMIT - The Board is actively exploring deviating beyond an outflow of 10,400 m3/s (367,270 cfs) reached on June 13th, with the intent to provide relief to shoreline stakeholders upstream of the Moses-Saunders Power Dam.
LAKE ONTARIO OUTFLOWS TO BE INCREASED ABOVE NAVIGATION LIMIT - The International Lake Ontario – St. Lawrence River Board (Board) will continue to increase outflows to provide relief to shoreline interests on Lake Ontario after it agreed to raise flows above the regulation plan’s maximum L-Limit,…
LAKE ONTARIO REACHING PEAK, OUTFLOWS INCREASED RAPIDLY - Lake Ontario water levels have started to stabilize due to decreased precipitation and increased Lake Ontario outflows, which have been increasing rapidly as Ottawa River flows have continued to drop from their record highs this spring.
LAKE ONTARIO REACHES RECORD, BOARD CONTINUES TO RESPOND - Lake Ontario has reached 75.90 m (249.02 ft), exceeding the record peak of 75.88 m (248.95 ft) set in 2017, and will continue rising gradually over the next several days, but is expected to reach this year’s peak within one to three weeks.

Lake Ontario water levels have reached 75.85 m (248.85 ft) and will likely reach or exceed the 2017 record high of 75.88 m (248.95 ft) with the next few days.  Forecasts show that Lake Ontario levels are expected to crest within the next one to three weeks, mostly likely within a few centimeters…