As executive director of the Great Lakes Observing System, she's leading a campaign to map every meter of the lakes' bottom. The effort, the marine scientist says, will pinpoint hundreds of ...

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

Due to a recent cold snap, ice coverage on the Great Lakes is significantly higher than last year. Lake Erie is almost ...

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 ...

The Great Lakes' water temperatures have been running ... Here’s the current ice cover map. Saginaw Bay is shallow and confined. Saginaw Bay is building ice quickly and will continue to do ...