Illinois topographic maps

Average elevation: 178 m

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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: 148 m

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Average elevation: 188 m

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Average elevation: 206 m

Average elevation: 156 m

Average elevation: 206 m