• fishable waters tap 2020

    See the latest issue of Great Lakes Connection

    Including a look at our latest Triennial Assessment of Progress report and articles on preparing for future extreme water levels, the value of connecting with nature, the successful cleanup of a polluted river and more. 

  • Image of lighthouse on Round Island in Lake Michigan

    IJC's 2020 Triennial Assessment of Progress

    The International Joint Commission published the 2020 Second Triennial Assessment of Progress (TAP) Report on Great Lakes Water Quality on December 10, 2020.

  • 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


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.

St. Mary Canal Update

The St. Mary and Milk Rivers, located in Montana and Alberta, are connected by a canal to benefit water users in both countries. On May 17 a concrete drop structure collapsed on the canal stopping flows from the St. Mary from reaching the Milk River. The canal was repaired and operational again by October 14, when a ribbon-cutting ceremony was held and flows into the river resumed.