In 2010 the National Park Service (NPS), with financial support from the Great Lakes Restoration Initiative, began mapping their Great Lakes underwater parklands in search of lake trout spawning reefs, sand movement and deposition, and submerged cultural resources. In addition to finding the expected results, they also discovered possible submerged glacial features and clues to the history of the name of Marina Shoal in the Apostle Islands!
This material is based upon work supported by the U.S. Geological Survey under Grant/Cooperative Agreement G18AC00368. The views and conclusions contained in this document are those of the authors and should not be interpreted as representing the opinions or policies of the U.S. Geological Survey. Mention of trade names or commercial products does not constitute their endorsement by the U.S. Geological Survey.
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Photo Attributions: NOAA, Great Lakes Environmental Research Laboratory, Paul Glyshaw
