Lake Superior and Lake Michigan-Huron water levels are near their seasonal low point and depending on weather and water supply conditions could begin their seasonal spring rise over the coming weeks. Lake Superior water levels remain below the seasonal long-term average while Lake Michigan-Huron water levels remain above the seasonal long-term average. Lake Superior outflows continue to be set in consideration of water levels upstream and downstream.
Lake Superior water levels drop after hot, dry summer
Hot summer weather and drier than average conditions have led to a lowering of Lake Superior water levels. The International Lake Superior Board of Control (ILSBC) said water levels had declined and reached the seasonal long-term average for the first time since April 2014. In its September update, the ILSBC said Lake Superior declined three centimetres in the month of August, a month that normally see the lake rising one centimetre.