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Title:Major Watersheds of Illinois
Author(s):Illinois State Water Survey
Contributor(s):McConkey, Sally; Brown, Kathleen J.
Subject(s):watershed
Illinois
Geographic Coverage:Illinois
Abstract:Major Watersheds of Illinois - This map illustrates general boundaries of major watersheds of Illinois. Shades of blue and green indicate watersheds in the Mississippi River basin. Watersheds with shades of green are located in the Illinois River basin. Shades of yellow and brown indicate watersheds in the Ohio River basin. The Cache River drains to both the Mississippi and Ohio Rivers. Drainage to Lake Michigan is in the Great Lakes basin. Its watershed is shaded pink. A watershed is often considered synonymous with drainage basin, and in this context it is the land area that directly drains to a common stream, river, or lake. Watershed boundaries follow topographic highs. Artificial drainage structures such as canals may convey water across topographic watershed boundaries in some areas shown. Features shown on this map are accurate to the scale at which they were originally developed. Communities are displayed as space allowed. LaMBert Conformal Conic projection based on standard parallels 30° and 45°. This map is available online as a 26" x 38" PDF file (2.1MB). This is the original map done in 2000.
Issue Date:2000
Series/Report:ISWS Map Series MS2000-01
Genre:Other
Type:Image
Language:English
URI:http://hdl.handle.net/2142/100397
Date Available in IDEALS:2018-08-09
Replaced By:http://hdl.handle.net/2142/100389


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