Environmental Monitoring at Argonne National Laboratory, Annual Report: 1979 Page: 11
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11
km (1,700 acres) of a 15.14 sq km (3,740-acre) tract in DuPage County, 43 km
(27 miles) southwest of downtown Chicago, and 39 km (24 miles) due west of
Lake Michigan. It lies in the Des Plaines River Valley, south of Interstate
Highway 55 and west of Illinois Highway 83. Figures 1 and 2 are maps of the
site and of the surrounding area. The 8.26 km (2,040-acre) area surrounding
the site (Waterfall Glen Forest Preserve) was formerly Argonne property, but
was deeded to the DuPage County Forest Preserve District in 1973 for their
use as a public recreational area, nature preserve, and demonstration forest.
The terrain is gently rolling, partially-wooded, former prairie and
farmland. The grounds contain a number of small ponds and streams, the prin-
cipal one being Sawmill Creek, which runs through the site in a southerly
direction and enters the Des Plaines River about 2.1 km (1.3 miles) southeast
of the center of the site. The land is drained primarily by Sawmill Creek,
although the extreme southern portion drains directly into the Des Plaines
River, which flows along the southern boundary of the Forest Preserve. This
river flows southwest until it joins the Kankakee River about 48 km (30 miles)
southwest of the Laboratory to form the Illinois River.
The largest topographical feature is the Des Plaines River channel,
about 1.6 km (1 mile) wide. This charnel contains the River, the Chicago
Sanitary and Ship Canal, and the Illinois and Michigan Canal. Their presence
extends the uninhabited area about 1.6 km (1 mile) south of the site. The
elevation of the channel surface is 180 m (590 feet) above sea level. Bluffs,
which comprise the south border of the site, rise from the channel at varying
slope angles of 150 to 600, reaching an average elevation of 200 m (650 feet)
above sea level at the top. The land then slopes gradually upward reaching
the average site elevation of 220 in (725 feet) above sea level at 940 m
(3,000 feet) from the bluffs. Several large ravines oriented in a north-south
direction are located in the southern portion of the site. The bluffs and
ravines generally are forested with deciduous trees of an average height of
15-18 m (50-60 feet). The remaining portion of the site changes in elevation
by no more than 7.6 m (25 feet) in a distance of 150 horizontal m (500 feet).
In the southern portion of the Forest Preserve, the Chicago District Pipe
Line Co. and the Atchison, Topeka, and Santa Fe Railroad have rights-of-way.
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Golchert, N. W.; Duffy, T. L. & Sedlet, J. Environmental Monitoring at Argonne National Laboratory, Annual Report: 1979, report, March 1980; Argonne, Illinois. (https://digital.library.unt.edu/ark:/67531/metadc283390/m1/11/: accessed July 16, 2024), University of North Texas Libraries, UNT Digital Library, https://digital.library.unt.edu; crediting UNT Libraries Government Documents Department.