A Visual Tour of the System

The hydrologic features, control structures and varied interests as they relate to outflow regulation in the Lake Ontario-St.Lawrence System

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A Visual Tour of the System

The hydrologic features, control structures and varied interests as they relate to outflow regulation in the Lake Ontario-St.Lawrence System

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Information on the 2017 & 2019 High Water Event

Images of flooding (left to right) upstream – Lake Ontario at Greece, New York, USA, 28 May 2019 (source: ILOSLRB) and downstream – St. Lawrence River at Lake St. Louis, Maple Grove, Quebec, Canada, 2 June 2019. (source: IJC)

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Information on the 2017 & 2019 High Water Event

Images of flooding (left to right) upstream – Lake Ontario at Greece, New York, USA, 28 May 2019 (source: ILOSLRB) and downstream – St. Lawrence River at Lake St. Louis, Maple Grove, Quebec, Canada, 2 June 2019. (source: IJC)

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International Lake Ontario-St. Lawrence River Board

The International Lake Ontario-St. Lawrence River Board ensures that outflows from Lake Ontario meet the requirements of the International Joint Commission's Orders of Approval. The Board also has responsibilities to communicate with the public.

About the Board