SALMON RUNS OF THE COLUMBIA RIVER IN 1938 



121 



Table 12. — Chinook salmon run in the Columbia River, 193S 



i Eliminating duplication in the last 2 periods. 



Table 14. — Significant ratios between elements of the chinook run 



Period 



Total catch 

 to escape- 

 ment 



Catch below Bonneville to- 



Total catch 



Bonneville 

 count 



Catch above Bonnoville to — 



Total catch 



Bonneville 

 count 



Rock Island 



count to 

 escapement 



Apr. 17-May 28 

 May 29-July 30 

 Julv 31-Aug. 27 

 July 31-Dec. 17. 



5.79 

 4.91 

 1.43 

 1,86 



0.941 

 .9*1 

 .986 

 .818 



4.06 

 4,42 

 1.38 

 1.13 



0. 059 

 .018 

 .014 

 .182 



0.256 

 .083 

 .019 

 .253 



0.065 

 .152 

 .007 

 .011 



