Appendix table 8. — Percent escapement of the total Colimibla River fall Chinook run over Bonneville Dam 



■'■ Commercial catch and Bonneville count taken from Biologists ' Report on the Colxmbia River Commercial 

 Fisheries, prepared for Columbia River Regulations Hearing, January 14, 1960. Prepared by Oregon Fish 

 Commission and Washington Department of Fisheries. 



^ Total does not include those fish spawning in tributary streams or the main Columbia River below 

 Bonneville Dam. 



^ If fishing effort were at a constant level, permitting an escapement of 44.49 percent, which is the 

 average from 1945 to 1959, then multiplying actual hatchery returns by the adjustment factor (e/E.) 

 adjusts them to the value that would occur if fishing effort were at this constant level. ^ 



Appendix table 9. — Adjustment of female returns to Spring Creek (S.C.) and Big White Salmon River 

 (B.W.S.) according to fishing intensity of Zones 1-5 as determined by percent escapement over 

 Bonneville Dam 



^ If fishing effort were at a constant level, permitting an escapement of 44.49 percent each year, 

 which is -the average from 1945 to 1959, then multiplying actual returns by -the adjustment factor (E/Ei) 

 adjusts these retxims to the values that would occur if fishing effort were at this constant level. 



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