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Lakes Superior, Michigan-Huron, and Erie remain well above average to start December

Aside from Lake Ontario, the rest of the Great Lakes continue to be well above average and will remain high through to the early winter. Lake Superior’s level was the ninth highest November level ever recorded, 10 cm below last year’s level and Lake Michigan-Huron experienced its third highest level for the month and was 6 cm below last year. The level of Lake Erie was its fourth highest for the month of November, 3 cm lower than last year. Lake Ontario was only 6 cm above its average value and 44 cm lower than last year. Both Lakes Michigan-Huron and Erie start December at their fourth highest levels in the period of record (1918-2019).

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