Lake Ontario Water Levels

In Local

Today’s Northumberland file photo

Report from Toronto Region Conservation Authority regarding Lake Ontario water levels

Please note the following regarding wind and wave forecasts for today and tomorrow:

1. Lake Ontario 24-hour average water level at the Toronto gauge as of this morning was once again 75.94m, with a maximum hourly level value recorded at 75.96m. Please keep in mind that seiche can cause fluctuations in water levels of between 10-20cm, thus should be considered over the average values.

2. Current water level is stable from yesterday’s average. ILOSRB is reporting that Lake Ontario is likely at or nearing its peak water level for this year due to the significant increases to Lake Ontario outflows and the forecasted drier conditions this weekend. It is likely that levels will remain stable for the next week before starting to decline gradually if drier conditions occur. However lake level may still see an additional small rise of a few centimeters if wetter conditions prevail in the coming week.

3. Little to no precipitation in the last 24 hours. Today is forecast to be dry, tomorrow (Monday), 20-25mm of precipitation is forecast

4. Winds today and tomorrow will be sustained ENE 20-25km/h, gusts up to 33km/h. Winds will shift to NW Monday evening overnight, sustained 25-30km/h with gusts up to 50km/h

5. Forecast offshore waves for next 72h: Waves between 0.8 and 1.0m are forecast for Sunday evening/overnight and 0.6-0.8m for Monday. Please note wave models do not take into account local mini seiche between inner harbour and Toronto Islands, nor do they account winds associated with thunderstorms. Thus, higher wave heights can develop under either of those conditions.

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!

Video – Divine Intervention Helps Return Missing Golf Clubs After Week-Long Search

https://www.youtube.com/watch?v=n3DaSKZLFrs It could be said there may have been a little divine intervention involved in the return of a set

Read More...

Marc Mercier’s Hockey Journey from Timmins to Toronto, Cobourg and Cambridge Too

By – David McPherson/Ontario Hockey Association COLLINGWOOD, ON – Ontario Hockey Association Chairman Marc Mercier and Ontario Junior Hockey League

Read More...

Video – Minor Fire at 310 Division Street in Cobourg

https://www.youtube.com/watch?v=HEEpI3xHq54 Cobourg Fire Department responded to reports of a structure fire at 310 Division Street on Friday, June 19, 2026. At

Read More...

Mobile Sliding Menu