Lake Superior’s average surface water temperature is 40 degrees. Some surface water still has a cold temperature of 35 ...

Heat waves and cold spells are part of life on the Great Lakes. But new research from the University of Michigan shows that ...

It does not show the pipelines ... Ultimately, the Great Lakes Observing System plans to make the lakebed map accessible to everyone and easy to use.

Michigan lawmakers propose free testing for kids, while Illinois advises private well owners to test for contamination.

A new trail system aims to connect eight states, communities and ecosystems along the world’s largest freshwater system.

Heading into the end of November, portions of the Great Lakes region were in a snowfall deficit measured in feet. A lack of cold air kept snow at bay. But then the first major Arctic outbreak of ...

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 ...

Great Lakes water levels are currently below average compared to 2024, though the lakes overall saw a rise from spring melt. Lakes Michigan-Huron are 8 inches lower than last year, the largest deficit ...

Great Lakes water levels are currently below average compared to 2024, though the lakes overall saw a rise from spring melt. Lakes Michigan-Huron are 8 inches lower than last year, the largest ...