Lake Huron Water Levels

Daily water levels on each of the Great Lakes, except Lake Superior, increased during December. The level of Lake Superior fell by its average amount, while levels on Lakes Michigan-Huron experienced a small, but welcome, increase. Water levels on lakes Erie and Ontario increased much more than average during December.


Daily water levels on Lake Superior fell 8 cm during December, equal to the average decline for the month. The level of Lakes Michigan-Huron rose 6 cm, instead of falling a few centimetres as it usually does. Daily water levels on lakes Erie and Ontario increased 12 and 18 cm, respectively. On average, these two lakes have increased by just 1 cm in past Decembers during the 1918-2007 period of record.

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