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Posted on: May 28, 2019

Lake Ontario Likely to Exceed 2017 Water Levels

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 (approximately 1 in.) of the record high, but potentially higher levels are possible should wet weather continue.

The main drivers for the high water levels continue to be the uncontrolled and record-high inflows from Lake Erie, through the Niagara River, and above average precipitation across the Lake Ontario and Ottawa River basins for this time of year. 

Outflows from Lake Ontario have been increasing since May 16, and further Lake Ontario outflow increases are expected to continue as frequently as conditions allow.

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