The Synopsis for Lake Ontario Water Levels

In Editor Choice, Local

Below is the Lake Ontario Synopsis daily briefing for May 24, 2019.

It’s part of the Lake Erie – Lake Ontario – St. Lawrence River Daily Briefing.

Lake Ontario’s level continued rising last week, albeit more gradually than the week prior thanks to relatively drier weather, which also allowed Lake Ontario outflows to be increased substantially as Ottawa River flows declined.

With additional precipitation in the forecast for this coming week and record inflows from Lake Erie continuing, Lake Ontario is expected to continue rising gradually over the next several days.

There remains a 50% chance that levels will reach or exceed the 2017 record peak of 75.88 m (248.95 ft) during the coming week.

Lake Ontario is expected to reach its seasonal peak this year within the next 1 to 2 weeks, with most scenarios suggesting a peak level slightly above the 2017 high, before it begins to slowly decline thereafter.

Lake Ontario levels are already at critical values in some areas, and there is the potential for a greater rise under the wettest scenarios.

Longer-term, with well above-average inflows from Lake Erie expected to continue, and given average inflows from the Lake Ontario basin, water levels will decline through the summer, but will remain near seasonal highs for at least the next several weeks.

Pete Fisher
Author: Pete Fisher

Has been a photojournalist for over 30-years and have been honoured to win numerous awards for photography and writing over the years. Best selling author for the book Highway of Heroes - True Patriot Love

Join Our Newsletter!

Want to keep up to date on news and events in Northumberland? Subscribe to newsletter!

You may also read!

Queenies Bake Shop in Port Hope Prepares for 14th Annual Free Thanksgiving Meal

Adam Pearson from Queenies Bake Shop on Walton Street spent Saturday, October 11, 2025 preparing for his stores annual

Read More...

Breaking News – Three Toronto Area Women Taken into Custody by Port Hope Police

https://www.youtube.com/watch?v=EGVbASDm8L8 Three women from the Toronto area were taken into custody by Port Hope Police on Saturday, October 11, 2025. At

Read More...

Video – Ontario Opens New Nuclear Discovery Centre in Port Hope

https://www.youtube.com/watch?v=Hf8p3S3m0Lw New Centre will serve as community information and engagement hub On Friday, October 11, 2025, Energy and Mines Minister Stephen

Read More...

Mobile Sliding Menu