United States Department of the Interior, Fred A . Seaton, Secretary 

 Fish and Wildlife Service, Arnie J. Suomela, Commissioner 



FISHERY MANAGEMENT STUDIES ON 

 THE MADISON RIVER SYSTEM IN 

 YELLOWSTONE NATIONAL PARK 



By 



Norman G. Benson, Oliver B. Cope,!' and Ross V. Bulkley 

 Bureau of Sport Fisheries and Wildlife 

 Logan, Utah 



J/ Presently Chief, Fish -Pesticide Research Laboratory, Denver, Colorado. 



Special Scientific Report --Fisheries No. 307 



Washington, D. C. 

 May 1959 



