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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.
[4] [5] The Forest Preserve District Association was formed in 1911 after a new state law was adopted in 1909; however, the courts declared the law unconstitutional in 1911. In 1913, Illinois adopted the Cook County Forest Preserve District Act [3] that was signed by the governor and survived legal challenge. The 1913 law allowed a county board:
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
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.
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. [3] The Palos Preserves feature the Palos Trail System ...
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 ...
Sauk Trail Woods are located within the Cook County Forest Preserves in Park Forest and Chicago Heights, Illinois. They are part of the Thorn Creek Trail System. They contain miles of paved bike trails and off-trail dirt paths. [1] Sauk Trail Woods contains Sauk Lake and Thorn Creek. The topography is fairly hilly, featuring ravines and steep ...