• Moses-Saunders Dam

    Background Paper Answers Key Questions on 2019 Lake Ontario and St. Lawrence River Flooding

    In an easy-to-read background paper on High Water in 2019, the International Lake Ontario-St. Lawrence River Board responds to the call for more accessible information.

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  • Water Matters - Banks of the Red River

    Public Comment on Proposed Nutrient Water Quality Objectives for the Red River - until March 28, 2020

    The International Joint Commission is seeking public comments on proposed nutrient concentration objectives and nutrient load targets for the Red River at the boundary between the United States and Canada. Comments will be accepted by mail, email and online until March 28, 2020.

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  • Picture of sunset over Lake Okanagan with view of a dock

    Boundary Waters Treaty

    The 1909 Boundary Waters Treaty  provides principles for Canada and the United States to follow in using the waters they share. 

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  • Over One Hundred Years of Protecting Shared Waters

    The International Joint Commission prevents and resolves disputes between the United States of America and Canada under the 1909 Boundary Waters Treaty.

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What's New

Turnip Rock on Lake Huron in Port Austin Michigan

Boards

Image of blue heron

International Watersheds Initiative

Lake Osoyoos, British Columbia

Reports

Image of American Falls, Ontario and New York

Transboundary Waters

Transboundary Watersheds

Select a watershed (basin) within the map below to learn more about the IJC’s water-related activities.

Feature Videos

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Public Comment on Proposed Nutrient Water Quality Objectives for the Red River - until March 28, 2020

The International Joint Commission is seeking public comments on proposed nutrient concentration objectives and nutrient load targets for the Red River at the boundary between the United States and Canada. Comments will be accepted by mail, email and online until March 28, 2020.

Learn more