Stagnicola walkeriana has a very limited range in northern and northeastern Wisconsin and southern Ontario, Canada as shown on the world map above. It lives in Lake Michigan and Lake Superior (Baker). In Lake Michigan it lives on the shore of Wisconsin's Door County near Sturgeon Bay (Baker). In Lake Superior it lives on the Apostle Islands and the shore of the Bayfield Peninsula in Bayfield County, Wisconsin (Baker).
In the waters of Lake Superior the snail lives on rocks or rocky ledges along the shore, typically a meter or less below the surface (Baker). Its habitat in Lake Superior is usually on the protected sides of islands and close to the shore, but in Lake Michigan near Sturgeon Bay it may be found on exposed to the waves on rocky ledges (Baker).  

Learn about this snail's unique characteristics!