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International Joint Commission
International Joint Commission
Commission mixte internationale
International Joint Commission emblem.png
Abbreviation
  • IJC
  • CMI
Formation 11 January 1909; 116 years ago (11 January 1909)
Legal status Active
Purpose Approving projects that affect water, water levels, and flows across the boundary and investigating transboundary issues and recommending solutions
Headquarters Ottawa, Ontario, Canada
Washington, D.C., USA
Official languages
English and French
Chairperson (Canadian section)
Pierre Baril
Chairperson (US section)
Gerald Acker
Boundary Waters July 09 019
Sections of Canada and the United States (including in the Boundary Waters Canoe Area Wilderness, above) are separated by a boundary that is in water. A particularly extensive section of the Canada–US border is in the Great Lakes.

The International Joint Commission (IJC) is an organization created by the governments of the United States and Canada. It was set up in 1909 by the Boundary Waters Treaty. Later, its work grew when the Great Lakes Water Quality Agreement was signed in 1972. The IJC helps manage and protect the many lakes and rivers that are along the Canada–United States border.

The IJC has six members, three from each country. It also has smaller groups that focus on specific parts of the border waters or certain topics. A team of experts helps organize and inform special task forces.

In a report from January 2025, the IJC asked the U.S. and Canadian governments to watch for tiny plastic pieces, called microplastics, in the Great Lakes. They also suggested calling microplastics a "chemical of mutual concern." Scientists on the IJC's advisory board want new rules to help make and use less plastic. They also recommend simple actions like avoiding single-use plastics and putting filters on washing machines to stop plastic fibers from going into wastewater.

Why Was the IJC Created?

Canada and the United States formed the International Joint Commission because they understood that what one country does with shared lakes and rivers affects the other. Both countries work together to manage these waters. They also protect them for people living today and for future generations.

The IJC follows the rules of the Boundary Waters Treaty, signed in 1909. This treaty gives general ideas for solving problems over shared waters. It also helps with other issues along the border. The IJC decides how to use these ideas for each specific situation.

What Does the IJC Do?

The IJC has two main jobs. First, it approves projects that change water levels and flows across the border. Second, it looks into problems that cross the border and suggests ways to fix them. The IJC's decisions consider many different ways people use water. This includes drinking water, shipping, making electricity, farming, and keeping ecosystems healthy. It also considers fishing, boating, and shoreline properties.

Approving Water Projects

The IJC can give special approvals for projects like dams or diversions. These projects might change the natural water levels of shared lakes and rivers. The IJC sets rules for how these projects should be built and run. This helps protect everyone's interests on both sides of the border.

For example, the IJC has approved projects that create hydroelectric power. These are in places like the Great Lakes and on the St. Lawrence River. The IJC also helps manage emergency water levels in the Lake of the Woods basin. It also divides water among different uses in other river basins.

Niagara Falls from Fallsview Boulevard, Niagara Falls, Ontario
The movement of the water near Niagara Falls on the border, is used to generate substantial hydroelectricity.

Improving Water Quality

In the Boundary Waters Treaty, Canada and the United States agreed not to pollute shared waters. They promised not to cause harm to health or property in the other country. When governments ask, the IJC studies and suggests ways to improve water quality. This includes lakes and rivers along the Canada-United States border.

A lot of the IJC's work focuses on helping governments clean up the Great Lakes. They also work to stop more pollution there.

Improving Air Quality

Air pollution can harm rivers and lakes. It also affects people's health, especially those with breathing problems. Over the years, the American and Canadian governments have asked the IJC to look into air pollution issues near the border. The IJC has a special board, the International Air Quality Advisory Board, to help with this.

Investigating Problems and Finding Solutions

The IJC studies problems that cross the border and suggests solutions. It does this when the national governments ask for help. When the IJC gets a request, it creates a board with an equal number of experts from both countries. These experts are chosen for their skills, not to represent a specific group.

Many of the IJC's studies have been about water and air quality. They also look at how shared water resources are used. For instance, one study led to the Great Lakes Water Quality Agreement in 1972. In this agreement, both countries promised to control pollution. They also agreed to clean up wastewater from factories and towns. A new agreement in 1978 added a promise to remove harmful toxic substances from the Great Lakes. These substances stay in the environment for a long time and can poison food for animals and people.

The IJC's suggestions are usually accepted by the Canadian and American governments.

How the IJC Is Organized

The International Joint Commission is led by six commissioners. Three are from Canada and three are from the United States. These commissioners are chosen by their governments. However, they do not represent their governments.

The IJC has three offices. One is in Ottawa, Canada. Another is in Washington, D.C., USA. The third is the Great Lakes Regional Office in Windsor, Ontario, Canada. This office has a team of American and Canadian scientists and staff.

Current Commissioners

The people serving as commissioners are:

Position Name Section Term start Term end Home State/Province Appointed by
Canadian co-chair Baril, PierrePierre Baril Canada Canada 24 June 2024 23 June 2028 Quebec Quebec Mary Simon on advice of Justin Trudeau
Commissioner Phare, Merrell-AnnMerrell-Ann Phare Canada Canada 9 May 2019 20 December 2027 Manitoba Manitoba Julie Payette, Mary Simon on advice of Justin Trudeau
Commissioner Chiblow, SusanSusan Chiblow Canada Canada 21 December 2023 20 December 2027 Ontario Ontario Mary Simon on advice of Justin Trudeau
U.S. co-chair Acker, GeraldGerald Acker United States United States 27 July 2023 None Michigan Michigan Joe Biden
Commissioner Yohe, LanceLance Yohe United States United States 16 May 2019 None North Dakota North Dakota Donald Trump
Commissioner Gioia, RobertRobert Gioia United States United States 2 May 2024 None New York (state) New York Joe Biden

IJC Boards and Task Forces

The IJC has different boards that handle specific issues related to boundary waters. When there are new or special problems, a Task Force is created to study them and make suggestions. Some of the ongoing boards include:

  • Great Lakes Science Advisory Board
  • Great Lakes Water Quality Board
  • International Lake of the Woods Control Board
  • International Lake Ontario-St. Lawrence River Board
  • International Lake Superior Board of Control
  • International Niagara Board of Control
  • International Red River Board
  • International St. Croix River Watershed Board

Where Are the IJC Offices?

See also

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