134 



FISHERY BULLETIN OF THE FISH AND WILDLIFE SERVICE 



data, that well over half of the fish that enter the river after the first of August are 

 captured before they can reach Bonneville. If a greater percentage of the larger 

 fish are caught it naturally follows that the percentage of grilse at Bonneville would 

 be approximately doubled. 



BLUEBACK SALMON 



Table 20. — Blueback salmon run, Columbia River 1938 



[Catch in number offish estimated on the basis of an average weight of 3 pounds. Data combined and arranged by corresponding 



weeks] 



Table 21. — Blueback salmon run, Columbia River, 1938 



ICatch in number of fish estimated on the basis of an average weight of 3 pounds below Bonneville and of 214 pounds above 

 Bonneville. Data combined and arranged by corresponding weeks] 



Week ending 



Catch in 

 zones 1 

 and 2 



Catch in 



zones 3 



to 5 



Total 

 catch 

 below 

 Bonne- 

 ville 



Bonne- 

 ville 

 count 



Catch 

 above 

 Bonne- 

 ville 



Total 

 catch 



Rock Is- 

 land 

 count 



Total 

 run 



Apr. 30.. 

 May 7... 

 Mav 14 . 

 May 21.. 

 May 28.. 

 June 4... 

 June 11-. 

 June 18.. 

 June 25. . 

 July 2... 

 July 9... 

 July 16.. 

 July 23.. 

 July 30.. 

 Aug. 6... 

 Aug. 13.. 

 Aug. 20.. 

 Aug. 27.. 

 Sept. 3.. 

 Sept. 10. 

 Sept. 17. 

 Sept. 24.. 

 Oct. 1... 

 Oct. 8... 

 Oct. 15.. 

 Oct. 22.. 

 Oct. 29... 



1 

 21 



3,470 



28,000 



25, 900 



15, 340 



3,030 



300 



46 



6 



740 



7, 570 



10, 470 



8,715 



2,960 



610 



52 



2 



16 



1 



761 



11,040 



38, 470 



34, 615 



18.300 



3,640 



352 



48 



5 



16 



Total . 



31, 135 



107, 250 



131 



572 



318 



24 



153 



1.358 



5,719 



15,441 



16, 491 



21,673 



7,835 



2,770 



1,125 



621 



279 



209 



156 



76 



71 



10 



1 







3 



1 



1 







2 



75, 040 



2 

 81 



1,149 



6.125 



10, 950 



11,730 



7,100 



1.5S0 



450 



164 



23 



6 



2 

 2 



82 



1,910 



17, 165 



49, 420 



46, 345 



25, 400 



5,220 



802 



212 



28 



22 



2 



80 



139 



871 



958 



530 



234 



677 



266 



93 



43 



35 



37 



96 



61 















1 



39, 360 



146,610 



17,123 



131 



572 



318 



26 



153 



1,359 



6,480 



26, 481 



64,961 



66,288 



26, 135 



6,410 



1,477 



669 



284 



225 



156 



76 



71 



10 



1 







3 



1 



1 







2 



1S2, 290 



