Illinois topographic maps

Average elevation: 148 m

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Belvidere developed on both sides of the Kishwaukee River in north central Illinois. It is 76 miles from downtown Chicago on Routes 20, 76 and the Northern Illinois Toll road. Belvidere is an industrial community surrounded by prosperous farms. It is the County Seat with an estimated 2006 county population of…

Average elevation: 244 m

Waukegan is located at 42°22′13″N 87°52′16″W / 42.37028°N 87.87111°W / 42.37028; -87.87111 (42.3703140, −87.8711404). Waukegan is on the shore of Lake Michigan, about 11 miles (18 km) south of the border with Wisconsin and 37 miles (60 km) north of downtown Chicago at an elevation around…

Average elevation: 197 m

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Average elevation: 148 m

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Beverly, Morgan Park, Mount Greenwood, Washington Heights, and the City of Blue Island are considered part of the Blue Island Ridge. The prehistoric glacial ridge was once an island in a lake and later part of its western shore. The distinct geological history is the most significant in Chicago, being the…

Average elevation: 195 m

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Between 1900 and 1920 the village saw its population more than triple to 7,814. In 1922 the village adopted the "Plan of Wilmette", which outlined a vision for its future that included open spaces along Green Bay Road and the elevation of the railroad tracks to provide unobstructed flow of traffic between the…

Average elevation: 186 m

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The western part of the county on the Mississippi River is part of the American Bottom floodplain, while the eastern portion of the county is relatively flat and was originally prairie. The transition zone between has high bluffs of limestone and dolomite and has distinctive Karst topography with numerous…

Average elevation: 157 m

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Average elevation: 169 m

Average elevation: 169 m

Average elevation: 168 m

The topography of Champaign County was formed by the Wisconsin Glacier about 20,000 years before the present. Lobes of ice from what is now Lake Michigan crossed the county, creating a deep pile of glacial soil, up to 300 feet thick, topped by numerous moraines forming small, flat watersheds with no outlets.

Average elevation: 217 m

Average elevation: 129 m

Average elevation: 138 m

Average elevation: 145 m

Baldwin Lake is a 2,018-acre (817 ha) reservoir which spans part of the border between Randolph County, Illinois and St. Clair County, Illinois. The lake is part of the Kaskaskia River State Fish and Wildlife Area, near 38°13′03″N 089°52′09″W / 38.21750°N 89.86917°W / 38.21750; -89.86917…

Average elevation: 127 m

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Average elevation: 142 m

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Average elevation: 95 m

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Average elevation: 198 m

Average elevation: 186 m