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 ... and Wisconsin Departments of Natural Resources (DNR) who helped ...

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.

A hotspot that now lies in the middle of the Atlantic Ocean was once under the Great Lakes, and may explain why they formed where they did. The Great Lakes formed where they did 20,000 years ago ...