Upper Midwest Environmental Sciences Center

Summary of Monitoring Findings for Fiscal Year 2001: Figure 13
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folder.gifSummary of Monitoring Findings for Fiscal Year 2001
Figures

Figure 13. Illinois River (upper right) combining with a Mississippi River side channel (lower left) near Grafton, Illinois, in 1997. Photograph illustrates incomplete mixing with the Mississippi River and the high suspended solids in the Illinois River.
Percent frequency of occurrence of submersed aquatic vegetation in upper Pool 4, 1991–2001, Upper Mississippi River System.

Page Last Modified: April 17, 2018