As executive director of the Great Lakes Observing System, she’s leading a campaign to map every meter of the lakes’ bottom.

The dip of Arctic air into the Midwest expanded ice coverage across all 5 Great Lakes, some seeing greater increases than ...

As executive director of the Great Lakes Observing System, she's leading a campaign to map every meter of the lakes' bottom.

Lake effect snow is dependent on the Great Lakes water temperature and how much of the lake is frozen. But what does the ...

Data, maps, and reports are available at the lake-level (Great Lakes), for each state, and for the five-state region as a whole by clicking on the links below: Brief reports that summarize, analyze, ...

Ice growth on the Great Lakes requires long spells of subfreezing temperatures like we’ve seen of late. The shallower lakes—Erie and Huron—are the first to build significant surface ice, with the ...

Frigid air parked over the region caused a dramatic increase in ice coverage on the Great Lakes this week There’s a glimmer of hope on the horizon for folks who live across Ontario's traditional ...