Figures - Cont'd 



Nos. Page 



7. Hourly catches of bluebacks in 1952 and 1953* Each hour 

 represents tha suimation of the year's catch for that 



hour 5 



8. Hourly catches of silvers in 1952 and 1953* Each hour 

 represents the sunaaation of the year's catch for that 



hour 6 



9. Hourly catches of steelheads in 1952 and 1953* Each hour 

 represents the suamation of the year's catch for that 



hour 6 



10. Percent of steelheads caught each hour during tvo 72-hour 



periods in 1953 6 



U. Percent of night-migrant chlnook fingerlings and yearlings 

 plotted against numbers of fish (1952 and 1953). Lines 

 shown axe the least-squares fits 8 



12. Percent of night-migrant chinook fingerlings and yearlings 

 plotted against days from start of sampling (1952 and 



1953). Lines shown are the least-squares fits 8 



13. Percent of night -migrant chinook fingerlings and yearlings 

 plotted against Secchi-disk readings (1952 and 1953). 



Lines shown are the least-squares fits 10 



TABLES 



1. Hourly catches of downstream-migrant seLLmonids in 1952. 

 Each hour represents the suomation of the yeea*'8 catch 



for that hour ^ 



2. Hoxirly catches of downstream -migrant salmonids in 1953* 

 Each hour represents the summation of the year's catch 



for that hour h 



3. Numbers of downstream-migrant salmonids caught within 



sampling periods at Bonneville Dam froa 19^-1953 3 



