A map of known Reefs and Shoals in the Bay of Green Bay (Lake Michigan, USA) drafted by the Nature Conservancy. Data from: Goodyear Spawning fish atlas (https://www.arcgis.com/home/item.html?id=8e951782d20340708ced556274a18941) Known reef point locations were compiled from various data sources including the U.S. Geographic Naming Information System (GNIS), Ontario Ministry of Natural Resources and Forestry Lake Huron known reef locations (also in Environment Canada's Environmental Sensitivity Index), U.S. Fish and Wildlife Service reports to the Great Lakes Fishery Commission, U.S. Geological Survey northern Lake Michigan LiDAR collection, and published manuscripts from Edsall and Jude.The Great Lakes Aquatic Habitat Framework (GLAHF) project has been funded by the Great Lakes Fishery Trust and led by Dr. Catherine Riseng, PI, at the University of Michigan School of Natural Resources and Environment, with partners from Michigan Department of Natural Resources-Institute for Fisheries Research, NOAA Great Lakes Environmental Research Laboratory, International Joint Commission, Michigan State University, The Nature Conservancy, Ontario Ministry of Natural Resources, University of Minnesota-Duluth, U.S. Fish & Wildlife Service, U.S. Geological Survey and many collaborating partners in both the USA and Canada. More information about this project can be found at http://ifr.snre.umich.edu/projects/glahf/.NOAA Nautical Maps: The NOAA_RNC MapService provides a seamless collarless mosaic of the NOAA Raster Nautical Charts. Source charts are updated once per month. This map service is not to be used for navigation.Please note, reef polygons were digitized to approximate size and location and do not represent the entire extent of each reef.

Special Wetland Inventory Study Areas includes those surface waters in Wisconsin that are hydrologically connected to ecologically significant coastal wetlands of the Great Lakes or federal or state designated study areas. These are waters in areas identified in a special wetland inventory study (SWIS) under Chapter NR 103.04, Wis. Adm. Code. A Special Wetland Inventory Study exists for the area bordering the bay of Green Bay.