Figure-5.14: Laurentian Great Lakes annual maximum ice cover, 1973–2018
![](https://changingclimate.ca/site/assets/uploads/sites/2/2018/11/Figure-5.14-1-1024x484.png)
Laurentian Great Lakes annual maximum ice cover (%) (1973–2018). Red dashed line indicates the long-term average.
NOAA Great Lakes Environmental Research Laboratory, https://www.glerl.noaa.gov/data/ice/