Lake Erie is the shallowest of the Great Lakes but bests its cousins in several other ways. Find out more about all the Great ...

When the rivers start to dry up or are diverted, the lakes’ levels of salinity increase. [To view photos, videos and interactive maps, click here.] Get Top Stories newsletter.

GLOS estimates the cost of mapping all five Great Lakes in high density to be $200 million. That's quite the modest investment relative to the value the lakes provide. The Great Lakes basin supports ...

Beneath the surface of waters of the Great Lakes’ connecting channels is an aggressive invader threatening ecosystems and communities: Hydrilla.

Biinaagami — meaning pure, clean water in the Anishinaabe language — makes it its mission to inspire the kind of collective action Doreen advocated. To that end, it also attended the water gathering ...

Now, 40 years later, Boehme wants to launch another treasure hunt. As executive director of the Great Lakes Observing System, she's leading a campaign to map every meter of the lakes' bottom.

This principle guided the authors of the Great Lakes-St. Lawrence River Basin Water Resources Compact, an agreement approved by the leaders of all eight states that border the lakes and signed ...