WASHINGTON (Cont. ) 



6. Migration and Mortality of Fingerlings at Bonneville Dann (Proj. 88). 



The objectives are to deternnine species, origin (hatchery or natural propagation) 

 size, age and time of seaward migration of salmon and steelhead fingerlings. 

 The effect of turbines and spillways at the dam upon small downstream migrants 

 will be evaluated. 



Hdqtrs. : Seattle; began March 1945, planned for completion in 1957; $13,500; 

 K. G. Weber, Project Leader. 



Address correspondence to; Clinton E. Atkinson, Chief, Pacific Salmon Investiga- 

 tions, 2725 Montlake Blvd., Seattle, Wash. 



7. Temperature Regimen of the Columbia River System (Proj. 89). 



The original objective was to obtain picture of water temperatures of Columbia River 

 and its tributaries prior to construction of the dams. With many more reser- 

 voirs being created, the resulting tennperature changes and their effect upon 

 migrating fish are being studied. 



Hdqtrs. : Seattle; began in 1945, continuing; $1,000; K. G. Weber, Project Leader. 

 Address correspondence to: Clinton E. Atkinson, Chief, Pacific Salmon Investiga- 

 tions, 2725 Montlake Blvd., Seattle, Wash. 



8. Guilding of Salmonoid Fishes (Projects 90 and 91). 



The objectives of these projects are to determine the most effective electrical con- 

 ditions for controlling the movements of salnnon fingerlings with pulsating direct 

 current, the principles of orientation involvsd and the degree to which this method 

 can be used to protect the fingerlings on their downstream migration. The effi- 

 ciency of sonic vibrations, light waves and magnetism in guiding salmon into safe 

 channels of migrations will be studied. 



Hdqtrs. : Seattle; began in 1945, continuing; $20, 300; K. G. Weber and G. B. Collins, 

 Project Leaders. 



Address correspondence to: Clinton E. Atkinson, Chief, Pacific Salmon Investiga- 

 tions, 2725 Montlake Blvd. , Seattle, Wash. 



9. Efficiency of Types of Fishways (Proj. 95). 



This is a comparative study of the "Denil" fish ladder and the standard pool-type 

 fish ladder in attracting salmon and assisting them over streambarriers. Ad- 

 vantages and disadvantages of the new "Denil" fishway are noted. 



Hdqtrs. : Seattle; began in June 1948, completed in 1953; $1, 000; C. J. Burner, Leader. 

 Address correspondence to: Clinton E. Atkinson, Chief, Pacific Salmon Investigations, 

 2725 Montlake Blvd. , Seattle, Wash. 



117 



