U.S. Geological Survey: Science for a Changing World - USGS visual identity mark and link to main Web site at http://www.usgs.gov/

Map and chart showing Illinois River gaging station locations and discharge records

Figure 5. Illinois River gaging station locations and discharge records. Interstation comparisons indicate that mean annual discharge has not been significantly modified by manmade structures. The longest record from Marseilles was selected to represent the Illinois River flow. Dashed vertical lines track similarities between the records; the horizontal line in each record represents the mean discharge for the entire record. cfs, cubic feet per second.
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U.S. Geological Survey, U.S. Department of the Interior
This page is https://pubs.usgs.gov/bulletin/b2187/figure5.html
Contact: Harry Dowsett (hdowsett@usgs.gov)
Last modified 09.07.01 (krw)