WASHINGTON (Cont. ) 



U. S. Fish aJid Wildlife Service cooperating; Washington State College; 

 began June 1954, to close May 1957; $8,752; F. D. Klopfer, Leader. 



Address inquiries to: F. D. Klopfer, Department of Psychology, State 

 College of Washington, Pullman, Washington. 



U. S. Fish and Wildlife Service, Branch of Fishery Biology 



1. Temperature Regimen of the Columbia River System 



The original objective was to obtain records of water temperatures of 

 Columbia River and its tributaries prior to construction of the dams. With 

 many more reservoirs being created, the resulting temperature changes and 

 their effect upon migrating fish are being studied. 



Colunnbia River; began 1945, continuing; $3,630; K. G. Weber, Leader. 



Address inquiries to: Clinton E. Atkinson, Chief, Pacific Salmon In- 

 vestigations, 2725 Montlake Boulevard, Seattle 2. Wasington. 



2. Season and Biology of Fingerling Salmon Migration at Bonneville Dam 



This project was initiated to: (1) determine the species, origin (hatchery 

 or natural propagation), size, age, and the time of seaward migration of 

 salmon and steelhead fingerlings, and (2) to estimate the percentage migra- 

 tion of salmon and steelhead fingerlings through spillway and power house 

 channels. 



Bonneville Dam; began 1946, continuing; $10, 370; K. G. Weber, Leader. 

 Address inquiries to: Clinton E. Atkinson, as in No. 1 above. 



3. Electrical Guiding of Fishes 



The general objective is to develop a safe practical method of guiding fish 

 with electricity, with particular reference to directing the movements of 

 salmon fingerlings on their downstream migration. Controlled laboratory 

 experiments will determine: (1) the electrical characteristics most effective 

 in controlling fish movements, (2) the electrical properties injurious to fish, 

 (3) the most desirable electrical field patterns, and (4) the most desirable 

 types of electrodes, electrode spacing, and switching sequences. 



Seattle; began 1961, to close 1961; $37,312; G. B. Collins and H. W. 

 Newman, Leaders; reports available. 



Address inquiries to: Clinton E. Atkinson, as in No. 1 above. 



4. Squawfish (Ptychocheilus) Predation Control by Electricity 



The areas of the Columbia River where hatchery salnnon are released have 

 been observed to concentrate numbers of squawfish, which are detrimental to 

 the salmon released. This project was initiated to develop the most effective 

 electrical means of controlling, deflecting, or separating squawfish of several 

 sizes from seaward migrant salmon fingerlings and trout. The data to be 

 collected will be: (1) the most effective electrical fields in blocking the move- 

 ments of adult squawfish, by controlled laboratory experiments, (2) electrical 

 conditions lethal to adult and fingerling squawfish, and (3) the most effective 

 electrical conditions in concentrating adult and fingerling squawfish into small 

 areas for capture or lethal shocking. 



Seattle; began 1955, to close 1958; $23,689; G. H. Maxfield, Leader. 



Address inquiries to: Clinton E. Atkinson, as in No. 1 above. 



5. Experimental Electrical Guiding of Fish in the Field 



This project was developed to find a practical means of guiding fish with 

 electricity on a field scale, and to: (1) extend experimental procedures beyond 

 the physical and electrical capabilities of the laboratory; (2) repeat and con- 

 firm experimental laboratory tests. 



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