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Great Lakes Trend Graph

Great Lakes ice trend graph is an interactive trend chart that shows the ice extent based on annual collections of U.S. National Ice Center's daily ice analyses.

Multi-line graph of annual ice extent for Great Lakes waters. Data is collected from our daily ice analysis that contains total ice extent in one hundred thousand of square kilometers.

Click on year in legend to toggle line on and off .... Click a box outline to zoom in and right click to return original graph.

The display resolution to properly show the trend graph is insufficient. Please view on a wider dispay.
Great Lakes Annual Ice Statistics
Year Maximum Daily Average
(one hundred thousand of sqkm)
Icon with up arrow to indicate scroll up.