WAHLE and VREELAND: BIOECONOMIC CONTRIBUTION OF FALL CHINOOK SALMON 



Table lO.— Estimated catch of 1961-brood special marked fall chinook salmon and potential 

 contribution from Elokomin and OxBow Hatcheries by fishery type, 1963-66. 



'Setnet and dip net fisheries. 



eries occurred in the Washington fisheries. (Fig- 

 ure 5). Nearly 30% of the Elokomin catch was 

 taken in the Washington commercial fisheries. 

 Washington sport fishermen took over one-fourth 

 of the OxBow catch. Fish from Elokomin appear to 

 have a more northerly distribution than those 

 from OxBow. 



Southeostern Alosko 



COMMERC lAL 



British Columbia 



Elokomin hatchery 



Southeostern Aioska 



COM ME RC lA L 



British Columbia 



COMMERCIAL 



Washin g ton 



SPORT 

 COMMERCIAL 



Ore gon 



SPORT 

 COMMERCIAL 



Colifornio 



SPORT 

 COMMERCIAL 



Columbio River 



SPORT 



GILLNET 



INDIAN 



PERCENTAGE 



OXBOW HATCHERY 



60 

 OF CATCH 



ZZI 27% 

 H 2 4% 



PERCENTAGE OF CATCH 



FIGURE 5. — Percentage of 1961-brood fall chinook salmon from 

 Elokomin and OxBow Hatcheries taken by area and fishery, 

 1963-66. 



Grays River and 

 Cascade Hatcheries, 1962 Brood 



The 1962-brood fall chinook salmon at Grays 

 River Hatchery were given a LV-LM special clip 

 and the Cascade fish were RV-LM clipped. Special 

 marks were applied to approximately 18% or 

 241,500 Grays River and 13% or 541,200 Cascade 

 Hatchery fish. These fish contributed to the 

 fisheries from 1964 through 1967. 



Approximately equal numbers of Grays River 

 and Cascade fall chinook salmon with special 

 marks were estimated to have been taken in the 

 fisheries (Table 11). Fish from both hatcheries 

 were caught almost exclusively as 3- and 4-yr- 

 olds. Few were taken as 2's and 5's. The potential 

 contributions of Grays River and Cascade were 

 3,900 and 4,800 fish, respectively. For each 1,000 

 chinook salmon released at Grays River Hatchery, 

 2.9 were caught in the fisheries and 0.4 fish were 

 caught per pound of fish released. The contribu- 

 tion from Cascade Hatchery was 1.1 chinook 

 salmon per 1,000 released and 0.2 per pound offish 

 released. 



The catch distributions of Grays River and Cas- 

 cade Hatcheries were very different (Figure 6); for 

 example, a much greater portion of Cascade's than 

 Grays River's fish were taken in the British Co- 

 lumbia fishery. Most of Grays River's fish (65%) 

 but only 24% of Cascade's fish were taken in the 

 Washington sport fishery. 



Klickitat and Big Creek 

 Hatcheries, 1963 Brood 



A LV-RM special mark was applied to 18% or 

 521,600 1963-brood fall chinook salmon at Klick- 



195 



