After the feasibility of transfers and the maximum numbers of salmon 

 to be hauled each year had been determined, actiTity at Deer Creek was 

 directed toward annual counts of native adult salmon, sampling of the 

 dovmstream migration of young, studies of Deer Creek water temperatures, 

 and observations of prespawning mortality, spawning, and utilization of 

 available spawning grounds. 



Transplanting of Salmon from Sacramento River to Deer Creek 



The period of hauling varied from year to year^ The beginning of 

 transplanting operations depended upon the arrival of spring-run salmon 

 at Keswick Dam and also upon the schedule of construction work under way. 

 The termination of hauling each year was determined by the maximian water 

 temperatures present in Deer Creek. When these became lethal to salmon, 

 hauling, of course, was discontinued. 



The number of salmon transferred to Deer Creek each year is shown in 

 table 1, together with losses, periods of transfer, and numbers of 

 successfully transferred salmon. Losses comprise fish lost in transit 

 and those dying soon after release into Deer Creek. 



Table lo =-• =- Salmon transfers to Deer Creek 



During the transfer operation, l5,803 spring-run salmon were intro- 

 duced into Deer Creek. Of these, 2,9ii0, or I8 percent, were lost. Pre- 

 sumably 12,863, or 82 percent, were successfully transferred. This per- 

 centage of successful transfers is considered a favorable one. 



