Depths range from 210 feet in Lake Erie to more than 1,300 feet in parts of Lake Superior. This July 2023 photo provided by State Historical Society of Wisconsin shows the schooner Trinidad's wheel.

Rocks, sand dollars, coquina mollusks — anything the ocean ... Depths range from 210 feet in Lake Erie to more than 1,300 feet in ... The Great Lakes map would provide fuller images of ...

The lakes cover 94,250 square miles (244,106 square kilometers) — an area larger than the state of Kansas. Depths range from 210 feet (64 meters) in Lake Erie to more than 1,300 feet (396 meters ...

Rocks, sand dollars, coquina mollusks — anything the ocean gave up. ... in Lake Erie to more than 1,300 feet ... The last effort to map the lakes came in the 1970s.

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 gave up.

Depths range from 210 feet (64 meters) in Lake Erie to more than 1,300 feet (396 meters) in parts of Lake Superior.The idea is gaining traction since technology has improved and scientists have ...

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 organization has been pushing since 2018 to create high-resolution maps of all five Great Lakes bottoms, but that’s a daunting task. The lakes cover 94,250 square miles (244,106 square ...

The organization has been pushing since 2018 to create high-resolution maps of all five Great Lakes bottoms, but that's a daunting task. The lakes cover 94,250 square miles (244,106 square ...

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.