ACKNOWLEDGMENTS 



This study would not have been possible without the 

 cooperation of the Naples Terminal Company and Naples Marine 

 Service, Naples, IL. We are grateful to Mr. Larry Jamison of 

 Naples Marine Service and his crew for moving barges, relaying 

 messages to us, watching over our equipment, and even radioing 

 other vessels to insure our safety while we were diving. 



We are grateful to our summer divers: Mr. Don Craig, Florida 

 Institute of Technology; Mr. Larry Durham, Mr. Russell Boone, and 

 Mr. Carroll Moore of Eastern Illinois University, Charleston, IL; 

 Mr. E. "Butch" Atwood, Illinois Department of Conservation; and 

 Mr. Richard Hazzard, Ms. Victoria Atchley, Mr. Craig Schmittler, 

 and Mr. Alan McLuckie of the Illinois Natural History Survey, 

 River Research Laboratory, Havana, IL. 



Statistical analysis of data was completed by Mr. David 

 Swofford, Illinois Natural History Survey, Champaign, IL. 



We wish to thank the staff at the Illinois Department of 

 Conservation Fisheries Headquarters, Havana, and especially Rudy 

 Stinauer and Kenneth Hills for storing our diving boat; Mr. Mike 

 Rhyner who arranged the loan of the Motorola Mini-Ranger III Radar 

 Ranging System from the Upper Mississippi River Basin Association; 

 Mr. Steve Harrison, Federal Aid Program Manager at the Illinois 

 Department of Conservation; Mr. John Cookson, Chief of the State- 

 Federal Relations Branch, National Marine Fisheries Service; and 

 Ms. Sue Hale, grants and contracts officer, Natural History 

 Survey, Champaign. 



