■^r^TES o^ *^' 



Effect of Gas Supersaturated Columbia 

 River Water on the Survival of 

 Juvenile Chinook and Coho Salnnon 



THEODORE H. BLAHM, ROBERT J. McCONNELL, and GEORGE R. SNYDER 



SEATTLE WA 

 April 1975 



noaa 



NATIONAL OCEANIC AND 

 ATMOSPHERIC ADMINISTRATION 



National Marine 

 Fisheries Service 



