Larger fish and crustaceans can be found further downstream, closer to the Des Plaines River. Sawmill Creek, which runs through the savanna, hosts a large crayfish population during the spring season. Ephemeral ponds make the savanna an essential habitat for amphibians such as salamanders, frogs and snakes. With Waterfall Glen being a wooded area having older trees, birds like pileated woodpeckers, scarlet tanagers, ovenbirds, wood thrushes, broad-winged hawks, and barred owls, are attracted to the area and some species breed there. Individual black and white oaks, shagbark and bitternut hickories, and black walnuts range from 180 to 215 years old. Many native insects, including giant grasshoppers and black window spiders, are known to nest in these shrubs. Tall grass, ferns, and wild lilac bushes are common shrubbery found growing on the savanna. Waterfall Glen is one of highest ranked conservation areas in the county it contains 422 native plant species, including one state threatened and 36 of special concern. Waterfall Glen's 773-acre "Bluff Savanna", which roughly covers the southern part of the preserve between Argonne National Laboratory and the Des Plaines River, is a natural Midwestern oak savanna. Over 300 species of mammals, birds, fish, amphibians, and reptiles and another 300 species of invertebrates use the forest preserve, either year-round or during their migrations.
Waterfall Glen's tallgrass prairies, bogs, and Midwestern oak savannas contain 740 native plant species, 75 percent of all the plants known to grow naturally in DuPage County. Patrick Cemetery nestled deep in the preserve. Hikers can also make the interior trip to St. It is also home to a popular model airplane field, located in the southwest section of the forest preserve.
It completely surrounds Argonne National Laboratory. In the 1930s, the Civilian Conservation Corps helped restore the waterfall to its naturally tiered state, after years of erosion due to runoff from a nearby mill. Rocky Glen Falls, the largest waterfall in the preserve, is actually a natural dam in the valley glen. It contains several waterfalls on Sawmill Creek as it empties into the Des Plaines River. Waterfall Glen is a forest preserve in Downers Grove Township, DuPage County, Illinois, between the towns of Darien and Lemont, covering 2,492 acres (1,008 ha). Sawmill Creek Waterfall, Waterfall Glen Forest Preserve, Lemont, Illinois
0 kommentar(er)
