WAHLE and VREELAND: BIOECONOMIC CONTRIBUTION OF FALL CHINOOK SALMON 



TABLE 20. — Percent contribution of Columbia River hatchery fall chinook salmon in the Pacific coast 



fisheries sampled for marks, 1961-64 broods. 



'Includes study and nonstudy Columbia River hatcheries which reared 1961- to 1964-brood fall chinook salmon. 

 ^Marine catches include all races of chinook salmon; Columbia River catches include only fall chinook salmon 

 'Setnet and dip net fisheries. 



only fall chinook salmon. We estimated 1,467,600 

 fish or 14.8'7c were Columbia River hatchery fall 

 chinook salmon. The proportions of fall chinook 

 salmon in each of the fisheries sampled that were 

 of Columbia River hatchery origin are presented 

 in Figure 10. The percentages are averages ob- 

 tained by summing the 1961-64-brood fall chinook 

 salmon catches from Columbia River hatcheries 

 and dividing by the total 1961-64-brood chinook 

 salmon catches in the Pacific coast fisheries sam- 

 pled for marks (Table 20). 



The importance of Columbia River hatchery fall 

 chinook salmon to the Pacific coast fisheries is 

 readily evident in Figure 10. Columbia River 

 hatchery fall chinook salmon compose nearly 

 one-half of the Washington commercial and 

 nearly one-third of the Washington marine sport 

 chinook salmon catches. The Oregon ocean sport 

 catch of chinook salmon is one-fourth Columbia 

 River hatchery fall chinook salmon. The low 

 sampling percentage ( averaging < 5% ) may be the 

 reason for the apparent lack of hatchery contribu- 

 tion to the Columbia River sport fall chinook 

 salmon fishery. 



The contributions to the fisheries from the seven 

 Columbia River nonstudy hatcheries were 24,100, 

 22,700, 61,800, and 53,500 fall chinook salmon for 

 the 1961-64 broods respectively. Values of the con- 

 tributions were calculated using the ratio: 



Study hatchery value 



Nonstudy hatchery value 



Study hatchery contribution Nonstudy hatchery contribution' 



The values calculated for the nonstudy hatchery 

 chinook salmon were $182,900, $179,100, 

 $538,700, and $484,600 for the four broods respec- 

 tively. The total values for all 1961-64-brood Co- 



lumbia River hatcheries by brood were 

 $2,921,700, $1,485,200, $5,794,300, and 

 $3,284,600 respectively. 



Southeastern Alaska 



COMMERCIAL 



British Columbia 



POMMERCI AL 



Washin g ton 



SPORT 

 COMMERCIAL 



Ore gon 



SPORT 



SPORT 



6ILLNET 



INDIAN 



3% 



3% 



I 



3 3% 



5 8.4% 



4 8.0%, 



Y////\ Fall Chinook contribution 



20 40 60 80 



PERCENTAGE OF CATCH 



100 



from Columbia River tiatctiery 



Chinook contribution 

 trom other sources 



Figure lO. — Percentage contribution of 1961- to 1964-brood 

 Columbia River hatchery fall chinook salmon to the total 

 chinook salmon catch in each Pacific coast fishery, 1963-69. 

 Marine fisheries include all races of chinook salmon; Columbia 

 River fisheries include only fall chinook salmon. 



SUMMARY 



In 1962 a marking experiment was initiated to 

 determine the bioeconomic contribution of Co- 

 lumbia River hatchery fall chinook salmon. From 



205 



