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The Forest Preserve District encompasses approximately 70,000 acres (110 sq mi; 280 km 2) of land or approximately 11% of the land in Cook County, [1] which contains the city of Chicago and is the most densely populated urban metropolitan area in the Midwest. The Forest Preserves also owns the lands on which the Brookfield Zoo and the Chicago ...
One of the largest systems is the Forest Preserve District of Cook County, which includes Brookfield Zoo and the Chicago Botanic Garden as well as 70,000 acres (280 km 2) of open land, or 11.6 percent of Cook County's land area. Under Illinois law, counties may set up a conservation land holding district, after approval by county voters.
The Chicago Portage National Historic Site is a National Historic Site commemorating the importance of the Chicago Portage [2] in Lyons, Cook County, Illinois, United States. It is located in Chicago Portage Forest Preserve and the Ottawa Trail Woods Forest Preserve, at the junction of Portage Creek with the Des Plaines River , on the west side ...
Chicago area: Operated by the Forest Preserve District of Will County, 985 acres, over 3 miles of trails Trailside Museum of Natural History: River Forest: Cook: Chicago area: website, operated by the Forest Preserve District of Cook County, displays of live native animals, wildflower gardens, information about local wildlife and their habitats
The Argonne Forest area is known to geologists as Mount Forest Island, [2] an area which, during the Last Glacial Period, formed a triangular island 6 miles (9.7 km) long and 4 miles (6.4 km) wide, rising 80 to 120 feet (24 to 37 m) above the waters of the surrounding ice-age Lake Chicago.
Wetlands adjacent to the lake include the 250 acres (100 ha) Eggers Woods Forest Preserve, 175 acres (71 ha) Powderhorn Lake Prairie, and 40 acres (16 ha) Hyde Lake Wetland. [12] William W. Powers State Recreation Area is on Chicago's far southeast side, off highways 94, 90, and 41. The main park entrance is at 12949 South Avenue O. [1]
Busse Woods, the heart of the forest preserve, is a mature Great Lakes hardwood forest. A 440-acre (180 ha) segment of the woods, the Busse Forest Nature Preserve, is listed as a national natural landmark [2] as a surviving fragment of flatwoods, a type of damp-ground forest formerly typical of extremely level patches of ground in the Great Lakes region.
The Illinois Land Conservation Act (Public Law 104-106) created the Midewin National Tallgrass Prairie, designated the transfer of 19,165 acres (7,756 ha) of land in Illinois from the U.S. Army to the U.S. Department of Agriculture's Forest Service. The Illinois Land Conservation Act mandates that Midewin be managed to meet four primary objectives: