High potential range in Wisconsin

The Karner blue butterfly once ranged from Minnesota to Maine and into Canada and has been extirpated from parts of this range. To identify areas where the Karner blue butterfly has the highest probability of occurrence, the U.S. Fish and Wildlife Service produced and maintains the official regulatory range map for the species in the Information for Planning and Consultation tool. The portion of this range in Wisconsin is the High Potential Range, which is used for regulatory purposes and to implement the Karner Blue Butterfly Habitat Conservation Plan.

View the Karner Blue Butterfly High Potential Range map.

Interactive Map and Download

Karner Blue Butterfly High Potential Range Interactive Map

The GIS layer and PDF do not represent Karner blue butterfly distribution and should not be used for screening or reviewing a proposed land development or land management project for potential impacts to the Karner blue butterfly or other endangered resources. An Endangered Resources Review will tell you if your project has the potential to impact the species and what your next steps are. To determine if your project needs an Endangered Resources Review, visit the Wisconsin DNR's Endangered Resources Review webpage.