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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.
Lake Renwick Preserve: Plainfield: Will: Chicago area: Operated by the Forest Preserve District of Will County, 320 acre site and 200 acre lake where great blue herons, great egrets, black-crowned night herons, double-crested cormorants, and cattle egrets nest together, features Lake Renwick Heron Rookery Visitor Center with birding programs
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]
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.
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 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 ...
Red Gate Woods is a forest preserve section within the Palos Forest Preserve, a division of the Forest Preserve District of Cook County, Illinois. It is located near where the Cal-Sag Channel meets the Chicago Sanitary and Ship Canal.