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

Draft Report

Plan 2014 - Lake Ontario St. Lawrence River 

Plan 2014