
Chautauqua National Wildlife Refuge anchors the northwest corner of this Illinois landscape, where the waters of Lake Chautauqua and Quiver Creek meet the flat agricultural plains of Mason County. The terrain is defined by an extensive network of managed waterways, including the Mason Tazewell Drainage Ditch, Biggs Ditch, and Tomlin Ditch, which speak to the area's long history of land reclamation for farming.
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