Only a fraction of the Great Lakes' bottom has been mapped, and the available charts, completed decades ago, are ...

The Great Lakes mapping effort will pinpoint hundreds of shipwrecks, illuminate topographical features and identify fisheries ...

The last effort to map the lakes came in the 1970s. Maps were largely created using single-beam sonar technology similar to today's commercially available depth- and fish-finders. The system ...

The last effort to map the lakes came in the 1970s. Maps were largely created using single-beam sonar technology similar to today’s commercially available depth- and fish-finders. The system ...

MADISON, Wis. — Jennifer Boehme grew up scouting beaches around her home in St. Petersburg, Florida, for whatever she could find. Rocks, sand dollars, coquina mollusks — anything the ocean ...

What lies beneath the Great Lakes' waves is largely unknown, but there's a new push to learn more about thousands of shipwrecks, underwater infrastructure and the impacts of climate change on the ...

Push to Map Great Lakes Bottom Gains Momentum Amid Promises Effort Will Help Fishing and Shipping MADISON, Wis. (AP) — Jennifer Boehme grew up scouting beaches around her home in St. Petersburg ...