Water levels in Lake Ontario have reached a level of 75.37 metres. The International Lake Ontario – St. Lawrence River Board is advising shoreline residents of higher water levels across the waterbody, driven by this spring’s heavy rain and melting snow. The rise in water levels has slowed and is expected to reach peak levels over the next two weeks. Currently the water level is predicted to reach between 75.39 and 75.40 metres if average water supplies are received.

Water levels in Lake Ontario have reached a level of 75.30 m this spring during the annual rise from winter lows. The International Lake Ontario – St. Lawrence River Board is warning of rising water levels across the waterway, driven by heavy rain and melting snow. Water levels are expected to continue to rise, reaching their seasonal peak in May or June. Currently the water level is predicted to reach between 75.40 and 75.50 metres if average water supplies are received.

The Ministry of Environment, Conservation and Parks approved amendments to the Quinte Source Protection Plan, Assessment Report and Explanatory Document on April 30th, 2026. The amendment includes:

•Better source protection measures for the prescribed instrument policies, and
•Alignment with the 2021 Technical Rules under the Clean Water Act, 2006.

Quinte Conservation completed the amendments in accordance with the legislative and regulatory requirements set out in the Clean Water Act, 2006 and Ontario Regulation 287/07 (General).