Lake Ontario

The Ganaraska Conservation advises water levels have stabilized on Lake Ontario but will continue to be above average for the next several weeks. The water level of Lake Ontario is currently 75.40 meters above sea level (masl), and has likely reached its seasonal peak, 39 cm above normal compared to the long term average for May. Heightened risks, while water levels remain above 75.30 masl, include shoreline flooding, beach submersion, and wave-driven erosion along the shoreline of Lake Ontario. This Shoreline Conditions Statement for the Lake Ontario shoreline within the Ganaraska Region will be in effect until Friday, June 19th, 2026, at 12 p.m. Conservation Authority staff will continue to monitor conditions and provide updates as necessary.