Fragmented Wilderness of the Calumet Region

Ambler Flatwoods; Michigan City, Indiana

Big Marsh, Indian Ridge, Hegwesch Marsh, Burnham Prairie, Powderhorn Prairie, Wolf Lake, Eggers Grove; South-east Chicago

Dune and Swale Complexes; Lake County, Indiana

Gibson Woods, Ivanhoe Ridge and Swale, Clark and Pine Station; Lake County, Indiana

Heron Rookery, Pinhook Bog

Hidden Prairie, Gordon and Faith Greiner, Bur Oak Woods Preserves, Lake County, Indiana

Ivanhoe Ridge and Swale Preserves; Lake County, Indiana

Miller/Bayless Dunes; Lake County, Indiana

Myrna J. Newgent Preserve, Potato Creek State Park; LaPorte County, Indiana

Indiana Dunes National Park, Indiana Dunes State Park: Lake, Porter and LaPorte Counties, Indiana

Cook County Forest Preserve, South East Chicago Section; Cook County, Illinois

Walner, Ritchie, Wykes-Plampin, Enquist Preserves; Porter County, Indiana