Answer Wiki. 1 Answer. James Linn, Lived in Ontario for over 50 years. Answered Jan 5, 2017 · Author has 4.9k answers and 4.2m answer views. In the worst storms of winter, 15–18 feet. read more
From October through February, wave heights of 5 feet or more can be expected 10 Waves as small as one foot can be surfed, though larger waves can make for longer rides. The largest waves on the lakes easily surpass 10 feet, and waves more than 20 feet are occasionally recorded by NOAA weather buoys, usually in spring and fall. read more