40 



35- 



30- 



o 



I- 



2 

 O 



< 



UJ 



o 

 < 



UJ 



o 

 cr 



UJ 

 Q. 



25 



20 - 



15 



10 - 







Q 



1959 

 I 960 

 1961 

 1962 

 1963 



i 



:/ 



i 



/ m 



/m. 



/ m 

 / m 

 / m 

 y m 

 x M 

 y m 

 / W. 

 y M 



ym 



m 



o 



I 



^ 



8a m - l2noon 



Figure S 



l2noon-4p.m. 



4p.m'.- 8p.m. 8 p.m.- 12 midnight l2midnight-4o.m. I2midnight - So. 



Daily distribution of Yakima River spring chinook salmon captured during their seaward migration 



at Prosser, 1959-63. 



356 



U.S. FISH AXD WILDLIFE SERVICE 



