International Joint Commission (IJC)
More than a century of cooperation protecting shared waters

IJC – Protecting Shared Waters

Interactive map

The IJC helps Canada and the United States prevent disputes over transboundary waters

Click on a basin within the map to view detailed information



News on water levels in the Lake Ontario
and St. Lawrence River

News Releases

Subscribe to Great Lakes Connection and Water Matters




First Triennial Assessment of Progress on

Great Lakes Water Quality

Read More

Comment on Watershed Management Plans to Reduce Nutrient Pollution in Lake Erie

Learn More

Comment on the Souris River Study Board's draft work plan

Learn More