No wide-spread flooding is expected but residents are urged to monitor conditions.
Cataraqui Conservation has issued a Shoreline Conditions Statement, warning residents and municipalities about rising water levels on Lake Ontario and the upper St. Lawrence River.
According to the International Lake Ontario–St. Lawrence River Board, persistent spring precipitation has driven levels higher across the basin. Lake Ontario has risen 0.76 metres since March 1, reaching 75.30 metres at the end of April. While this remains below flood thresholds, officials say strong winds combined with elevated water levels could lead to localized shoreline flooding.
Forecasts suggest Lake Ontario could peak between 75.40 and 75.50 metres in May or June, still below record highs seen in 2017 and 2019. However, levels above 75.30 metres increase the risk of moderate impacts to shoreline properties, docks, marinas, and municipal infrastructure.
Widespread flooding is not expected, but residents are urged to monitor local conditions and report concerns to their municipality. This Shoreline Conditions Statement will remain in effect until (or updated before) Friday, June 12, 2026, at 11:59 PM.
Story by Tim Baltz
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