Habitat Management, Lakes, Water Quality Great Lakes cleanup progressing Bruce Kingsbury Since 2011 the Great Lakes Interagency Task Force has increased their focus on cleanup of the Great Lakes. A list of “Areas of Concern” (AOCs) in the U.S. and Canada prioritizes the most contaminated locales. Presque Isle Bay, part of Lake Erie, has recently been de-listed as an AOC. Presque Isle Bay, Lake Erie. Courtesy of geospectra.net