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



Fish and Wildlife Service, Arnie J. Suomela, Commissioner 



Bureau of Commercial Fisheries, Donald L. McKernan, Director 



EFFECT OF FISHWAY SLOPE ON RATE OF 

 PASSAGE OF SALMONIDS 



by 



Joseph R. Gauley 

 Fishery Research Biologist 



U. S. Fish and Wildlife Service 

 Special Scientific Report --Fisheries No. 350 



Washington, D. C. 

 June I960 



