• 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. 

  • 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.


International Watersheds Initiative


Transboundary Waters

Transboundary Watersheds

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


This year provides important opportunities for every Great Lakes resident to learn more about the issues affecting the Great Lakes, express why you care about them, share what actions you are taking -- large and small -- to restore and protect them, and your concerns for the health of the Great Lakes ecosystem. Consider why it's important for you to participate in these meetings by watching this brief video.

The opportunities start in June, when Canada and the United States will hold a Great Lakes Public Forum to discuss the state of the lakes and progress made under the Great Lakes Water Quality Agreement. The event is free and everyone is welcome to attend. The forum will be held in Milwaukee, Wisconsin at the Hilton City Center Hotel on June 17-19, 2019, where the IJC also will hold two public meetings: one on Tuesday evening that focuses on the Milwaukee region, and a full-conference roundtable conversation as the last session at the Great Lakes Public Forum.

Throughout June - October, the IJC will hold several additional public meetings, roundtables and educational events around the Great Lakes to hear everyone's perspective about the lakes' health now and in the future. Your input will help to ensure that the IJC provides an effective evaluation of progress to restore our precious Great Lakes, as well as advice for further progress.


Click on the link below for detailed information and registration for events in June, as well as a complete list of meetings in the summer and fall. We look forward to your participation!