Midewin National Tallgrass Prairie

Midewin National Tallgrass Prairie is a federally designated tallgrass prairie and restoration landscape in Will County, Illinois, established to restore native prairie ecosystems and commemorate regional heritage. The site lies near Joliet, Illinois, Chicago, and Kankakee River, and it is administered under the United States Forest Service, created following federal legislation and stakeholder action to convert former military lands into conservation and public-use space.

History

The prairie occupies territory formerly used by the U.S. Army at Rock Island Arsenal-era training grounds and by the Chicago, Rock Island and Pacific Railroad corridor, with land transactions influenced by the National Environmental Policy Act, the Omnibus Public Lands Management Act, and legislative advocacy from representatives of Illinois. Early efforts involved partnerships among the Illinois Department of Natural Resources, the Nature Conservancy, and local governments including Will County. The designation in 1996 followed debates involving the U.S. Congress, the United Nations Educational, Scientific and Cultural Organization-inspired conservation community, and military base realignment advocates. Implementation incorporated input from tribal nations such as the Potawatomi and Miami people, historical societies including the Will County Historical Society, and environmental organizations like the Sierra Club and Audubon Society.

Geography and Environment

Located within the Des Plaines River watershed and proximate to the Illinois River basin, the prairie spans glacial landforms shaped during the Wisconsin glaciation and influenced by the Valparaiso Moraine. The landscape includes prairie remnants, savanna, wetlands tied to the Kankakee River Basin, and relict oak openings contiguous with regional habitats found near Starved Rock State Park and Midewin National Tallgrass Prairie-adjacent conservation tracts administered by Forest Preserve District of Will County. Soils derive from glacial till similar to those cataloged by the United States Department of Agriculture soil surveys and support a mosaic of mesic and wet-mesic prairie types described in studies by the Illinois Natural History Survey and the University of Illinois Urbana-Champaign.

Ecology and Wildlife

Restoration emphasizes native flora such as big bluestem, little bluestem, Indian grass, and forbs documented in inventories by the Illinois Natural History Survey and botanical surveys in collaboration with the Field Museum of Natural History. Management targets fauna including restored populations of Henslow's sparrow, upland sandpiper, and pollinators like Monarch butterfly and bumblebee species monitored by the Xerces Society. Herpetofauna surveys record species comparable to those found in the Indiana Dunes National Park and Shawnee National Forest, while mammal assemblages include white-tailed deer, coyote, eastern cottontail, and small mammals studied by researchers from Northern Illinois University. The site functions as a component of regional connectivity for migratory birds tracked by Partners in Flight and linked to Audubon Important Bird Areas initiatives.

Management and Conservation

Management integrates practices such as prescribed burning influenced by techniques developed at Tallgrass Prairie Preserve (Oklahoma), invasive-species control targeting eastern redcedar and buckthorn, and prairie seeding informed by restoration protocols from the Nature Conservancy and academic partners at the University of Illinois at Chicago. Governance involves federal policy frameworks from the National Forest System and collaboration with the Illinois Department of Natural Resources, the United States Fish and Wildlife Service, tribal partners including the Peoria Tribe of Indians of Oklahoma, and non-governmental organizations such as The Conservation Fund. Long-term monitoring follows methodologies from the Long Term Ecological Research Network and utilizes mapping tools from the United States Geological Survey and the National Aeronautics and Space Administration for remote-sensing analyses.

Recreation and Visitor Facilities

Public use is managed to balance restoration with access, offering multiuse trails, interpretive signage developed with the Smithsonian Institution-style guidance of museum educators, and volunteer programs coordinated with the American Hiking Society and local chapters of the Sierra Club. Trails connect to regional networks near Joliet, and visitor services include educational programming for schools partnering with the Will County School Districts and outreach aligning with curricula from the University of Illinois Extension. Hunting, birdwatching, horseback riding, and cross-country skiing are regulated under federal rules by the United States Forest Service and local ordinances enforced by the Will County Sheriff's Office.

Category:Protected areas of Illinois