WAHLE and VREELAND: BIOECONOMIC CONTRIBUTION OF FALL CHINOOK SALMON 



four brood years (Table 18). Washington marine 

 fisheries took the largest catch of Columbia River 

 study hatchery fall chinook salmon followed by 

 British Columbia, Columbia River, and Oregon 

 fisheries. The combined Washington commercial 

 and sport marine catches from the 1961-63 broods 

 were equal to or greater than the British Colum- 

 bia commercial catch and were between 33 and 

 39% of the catch of Columbia River study hatchery 

 fall chinook salmon. For the 1964 brood the 

 Washington catch was over IVz times as large as 

 the British Columbia catch and approached one- 

 half of the total 1964-brood study hatchery fall 

 chinook salmon catch. The British Columbia 

 commercial catch ranged from 27 to 39% of the 

 study hatchery fall chinook salmon catch. The 

 combined Columbia River sport and commercial 

 catch by brood ranged from 20 to 30% of the study 

 hatchery catch. The Oregon ocean portion of the 

 catch ranged from 1 to 9%. The California portion 

 was 1% or less. Less than 0.5% of Columbia River 

 study hatchery fish were taken in the Alaska 

 fisheries, but these fisheries were incompletely 

 sampled. 



Kalama River and Spring Creek hatcheries, the 

 only hatcheries with special marks all four brood 

 years, did not follow the combined hatchery pat- 

 tern. For the Kalama River hatcheries the 1961 

 brood had the largest contribution and best catch 

 to release ratio, followed in order by the 1963, 

 1964, and 1962 broods (Table 17). The benefit to 

 cost ratios, however, did not follow this pattern 



primarily because of higher prices paid for salmon 

 in the later years of the study. The 1963 brood had 

 the best benefit to cost ratio, followed by the 1961, 

 1964, and 1962 broods respectively (Table 16). 



Distribution of the Kalama fish was more 

 northerly than the combined distribution for all 

 study hatcheries (Table 18). About 1% of the 

 Kalama fish were caught in the Alaska fisheries 

 during the years when these fisheries were sam- 

 pled. The British Columbia portion of the Kalama 

 contribution ranged from 42 to 60%. The 

 Washington marine fisheries took from 23 to 43% 

 of the Kalama fall chinook salmon. When the 

 Washington catch was at its highest (1963 brood), 

 the British Columbia catch was at its lowest. The 

 Columbia River sport and commercial catches of 

 Kalama fish ranged from 11 to 26%. In general, 

 the larger the percentage taken by the British 

 Columbia and Washington fisheries, the smaller 

 the percentage of Kalama fish taken by the Co- 

 lumbia River fisheries. The Oregon ocean fisheries 

 took 1 to 3% of the Kalama chinook salmon and the 

 California fisheries took very few Kalama fish. 



The brood year comparison of Spring Creek con- 

 tribution also differed from the comparison of all 

 hatcheries combined. The 1964 brood showed the 

 best potential contribution followed by the 1961, 

 1963, and 1962 broods (Table 17). The catch to 

 release and benefit to cost ratios were best for the 

 1964 brood followed by the 1963, 1961, and 1962 

 broods (Table 16). 



The ocean distribution of the Spring Creek 



Table 18. — Percentage of catch of Columbia River study hatchery fall chinook salmon taken 



by each fishery, 1961-64 broods.^ 



'Percentages may not add to 100 due to rounding 

 2 Less than 0.5%. 



203 



