Push to map the bottom of Great Lakes gains momentum

MADISON, Wisconsin: An official from the Great Lakes Observing System is leading a campaign to map every meter of the lakes' bottom that could pinpoint hundreds of underwater shipwrecks, illuminate topographical features, and locate infrastructure.

Jennifer Boehme, executive director of the Great Lakes Observing System, says the map will also help ships avoid submerged hazards, identify fisheries, and inform ero