WRC SPECIAL REPORT NO. 5 



ENVIRONMENTAL INVENTORY AND ASSESSMENT OF NAVIGATION 

 POOLS 24, 25, AND 26, UPPER MISSISSIPPI AND LOWER 

 ILLINOIS RIVERS: AN ELECTROFISHING SURVEY OF THE ILLINOIS RIVER 



Richard E. Sparks 



River Research Laboratory 



Illinois Natural History Survey 



Havana, Illinois 62644 



This report is the second edition. The first 

 edition was published by the U. S. Army 

 Engineer Waterways Experiment Stations as 

 Contract Report Y-75-5, dated December 1975. 



Funding for reprinting was provided with 

 support from the Illinois Institute for 

 Environmental Quality. 



June 1977 



