2026-05-07 QUINTE CONSERVATION ISSUES SHORELINE CONDITION STATEMENT FOR BAY OF QUINTE AND LAKE ONTARIO DUE TO RISING WATER LEVELS

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.

Shoreline Conditions: Between March and April, water levels have risen 0.76m on Lake Ontario and the Bay of Quinte and have reached the threshold for Quinte Conservation to issue a public statement. It is important to note that Lake Ontario has reached this level or higher in 33% of years since 1960, highlighting that while significant, reaching water levels of 75.30 m is not unusual. Current forecasts indicate that the peak water level of Lake Ontario should remain 20-40 cm below the record highs of 2017 and 2019. These forecasts are produced by the International Lake Ontario-St. Lawrence River Board.

Risks: Strong winds, when coupled with even moderately-high water levels, can result in localized flooding of vulnerable areas along the shoreline. As part of Quinte Conservation’s flood forecasting and warning service, we will be monitoring wind, waves, and lake seiche for short-term higher water impacts.

Actions: Residents in flood prone or low-lying areas are reminded to remain vigilant to changes in water levels and weather forecasts.

Additional Information: Water levels in Lake Ontario are expected to continue to rise, reaching their seasonal peak in May or June. Currently the water level is predicted to reach reach between 75.40 and 75.50 metres if average water supplies are received. Staff will continue to monitor conditions.

For current water levels or to report changes in water levels, residents are encouraged to visit the Quinte Conservation website or the International Lake Ontario – St. Lawrence River Board website.

This advisory will be in effect until (or updated before) Thursday, May 28, 2026

Quinte Conservation is a community-based environmental protection agency. It serves 18 municipalities in the watersheds of the Moira, Napanee and Salmon Rivers and Prince Edward County. It provides cost-effective environmental expertise and leadership. Quinte Conservation’s main goal is to create a sustainable ecosystem where people and nature live in harmony. More information about Quinte Conservation is available at www.quinteconservation.ca.

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For more information contact: Dave Eastcott, Water Resources Technologist
(613) 968-3434 ext. 126 OR (613) 354-3312 ext. 126