Great Lakes Water Levels and Related Data

Information on Great Lakes water levels is available from several agencies in the United States and Canada. This Web page contains links to a number of links to official Web sites containing Great Lakes water level and related data. 

Environment Canada Newsletter

• LEVELnews

Current and Recent Water Level Data

• Daily Water Levels for the Current and Previous Months
• Water Levels at United States Gauges
• Hourly Water Levels at Canadian Gauges
• Weekly Water Level Bulletin
• Telephone Numbers for Present Levels at Canadian Gauges

Water Level Forecasts

• Canadian Monthly Water Level Bulletin - Great Lakes and Montréal Harbour
• United States Monthly Water Level Bulletin - Great Lakes
• United States Weekly Water Level Forecast

Historical Water Levels

• Historical Monthly Mean Water Levels

Flows in Connecting Channels

• Lake Superior and Lake Ontario Outflows

Precipitation Data

• Daily Precipitation (Preliminary) and Historic Precipitation, by Lake Basin

Wave and Wind Data

• Recent Data at Wave Buoys and Wind Data at Shore Stations

Ice Cover

• Environment Canada - Canadian Ice Service
• United States National Ice Center

Water Temperature

• Surface Water Temperature
• Great Lakes Statistics
• Recent Data at Wave Buoys

Other Links of Interest

• International Joint Commission
• International Lake Superior Board of Control
• International St. Lawrence River Board of Control
• International Niagara Board of Control
• International Upper Great Lakes Study