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IJC Releases Recommendations to Protect Lake Champlain-Missisquoi Bay and Lake Memphremagog from Harmful Algal Blooms

The IJC released its final report to the Governments of Canada and the United States.

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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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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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What's New

Transboundary Watersheds

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

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Water Matters

IJC activities and other cooperative work on the health and flows of waters along the entire boundary. Read the May 2020 newsletter.

Great Lakes Connection

Latest science, reader perspectives and opportunities to protect the health of the Great Lakes ecosystem. Read the April 2020 newsletter