Resource provided by UW-Madison Robinson Map Library. This data represents DNR Special Wetland Inventory Study Areas, Wisconsin in 2017. [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.]