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Posted on: May 13, 2019

IJC - Lake Ontario Outflows Continue to be Adjusted to Balance High Water Levels

With Lake Ontario caught between a flooding Lake Erie and a flooded lower St. Lawrence River, outflows from Lake Ontario continue to be frequently adjusted to balance the impacts of high water levels that are occurring throughout the Lake Ontario – St. Lawrence River system.

Several months of wet weather followed by especially heavy rains and snow melt over the past few weeks caused record-breaking Ottawa River flows and resulted in severe flooding along both the Ottawa and lower St. Lawrence River. Outflows from Lake Ontario were temporarily reduced, helping to mitigate – but not eliminate – the impacts in the lower St. Lawrence during the peak of this event. Lake Erie water levels have been above seasonal records since the end of April and exceeded historic record highs at the start of May. Record inflows from Lake Erie combined with the reduced outflows to cause Lake Ontario levels to rise rapidly over the past several weeks.

See "IJC Press Release" below for full press release and more information.
IJC Press Release
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