Altogether, the Great Lakes are seeing healthier ice coverage this year. Here's what to know about their current conditions.

Historically in January, Lake Ontario has seen levels reach a maximum of 246.59 in January 1946 and dip to a minimum of 242.16 feet in 1935. Facts about the Great Lakes:How deep are the lakes?

When the Great Lakes Water Quality Agreement was passed in the 1970s, eutrophication was the big problem. Eutrophication occurs when too many nutrients enter a body of water, increasing the amount of ...