Water Levels & Forecasts
Monthly Mean Water Levels
Forecasts
Monthly forecasts of projected Great Lakes levels are jointly produced by Environment and Climate Change Canada and the U.S. Army Corps of Engineers, Detroit District, under the auspices of the Coordinating Committee on Great Lakes Basic Hydraulic and Hydrologic Data. These bi-nationally coordinated six-month forecasts are published in monthly bulletins through the responsible agencies in both Canada and the United States:
- Canada: Monthly Water Level Bulletin, Fisheries and Oceans Canada
- United States: Monthly Bulletin of Lake Levels for the Great Lakes, U.S. Army Corps of Engineers (Detroit District)