FISHERY BULLETIN: VOL. 76, NO. 1 



Hatchery fall chinook salmon was more southerly 

 than those of the Kalama or combined study 

 hatcheries (Table 18). The British Columbia catch 

 ranged from 18 to 34% of the total Spring Creek 

 contribution. The Washington marine fisheries 

 took 41 to 45%. The catch of Spring Creek fish in 

 the Oregon ocean fisheries ranged from 2 to 7%. 

 The maximum California take of these fish was 

 just over 0.5%. The Columbia River catch of 

 Spring Creek fish (21 to 39% ) was higher than the 

 percent catch of Kalama or all hatcheries com- 

 bined. This is to be expected since the Spring 

 Creek chinook salmon are exposed to more river 

 fisheries because of the upriver location of the 

 hatchery. 



Hatchery Comparison 



A hatchery comparison is made difficult by the 

 great differences in contribution between brood 

 years. Thus these comparisons are not a reflection 

 of the value of any particular hatchery as a fall 

 chinook salmon station nor are they a criticism of 

 rearing techniques at any of the hatcheries. In 

 general, the best catch to release and benefit to 

 cost ratios occurred for the 1963-brood special 

 marked hatchery fish (Tables 16, 17). The poorest 

 ratios generally occurred for the 1962-brood spe- 

 cial mark hatchery chinook salmon. This follows 

 the pattern of the common marked fish. The 

 1964-brood Spring Creek fall chinook salmon had 

 the best catch to release and benefit to cost ratios of 

 10 special mark hatcheries. The Cascade Hatch- 

 ery 1962-brood chinook salmon had the poorest 

 catch to release ratio, and the 1961-brood Eloko- 

 min Hatchery fish had the poorest benefit to cost 

 ratio. 



The general distribution of fall chinook salmon 

 from special mark hatcheries was similar in that a 

 majority of the fall chinook salmon were caught 

 north of the Columbia River mouth in the 

 Washington and British Columbia ocean fisheries 

 (Table 18). However, the percent catch of each 

 hatchery's fish varied greatly within each fishery. 

 The percent catch ranged from 12% (Grays River 

 1962-brood falls) to 60% (Kalama 1964 brood) in 

 the British Columbia fisheries. Percent catch by 

 Washington ocean fisheries ranged from 23% for 

 1961- and 1964-brood Kalama River fish to 74% 

 for 1962-brood Grays River chinook salmon. 

 Washington fisheries took the largest portion of 

 the catch for all but Kalama, Cascade, and Klick- 

 itat hatcheries. The British Columbia exceeded 



the Washington catch for these facilities except for 

 the 1963-brood Kalama fish where the Washing- 

 ton catch was slightly higher. As the percentage of 

 the catch taken by the British Columbia fisheries 

 increased, the percentage taken by other fisheries 

 (particularly Washington) naturally decreased. 

 Percent catches in the Oregon fisheries ranged 

 from 1 to n% for 1961-brood Kalama and 1964- 

 brood Bonneville fish respectively. In the Califor- 

 nia fisheries, percentages ranged from 0% for 

 Spring Creek and Kalama fish to 7% for Grays 

 River fish. Columbia River catch portions ranged 

 from 2 to 39% for the Grays River and Spring 

 Creek 1962-brood fish respectively. 



COLUMBIA RIVER HATCHERY 



CONTRIBUTION TO 



PACIFIC COAST FISHERIES 



This report covers the contributions of 13 fall 

 chinook salmon study facilities on the Columbia 

 River for brood years 1961 through 1964. These 

 broods were also released from other hatcheries on 

 the Columbia system. From 1962 through 1965, 

 seven nonparticipating facilities released fall 

 chinook salmon during one or more years (Table 

 19). Experimental releases made from three 

 facilities were not included. A total of 26 million 

 1961-64-brood fall chinook salmon migrants were 

 released from nonstudy hatcheries. We have as- 

 sumed nonstudy hatchery releases had the same 

 distribution and contribution as the study facility 

 average. In this way, we have incorporated the 

 catches of nonstudy hatchery fall chinook salmon 

 into those from study hatcheries to estimate the 

 total contribution and value of Columbia River 

 1961-64-brood hatchery fall chinook salmon. 

 From 1963 through 1969 the estimated total catch 

 in the fisheries sampled of the 1961-64-brood 

 chinook salmon, wild and hatchery, was 9,894,200 

 (Table 20). Marine sport and commercial catches 

 include three races of chinook salmon, i.e., spring, 

 summer, and fall. Columbia River catches include 



Table 19.— Releases of 1961- to 1964-brood migrant fall 

 chinook salmon from Columbia River nonstudy hatcheries. 



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