EXPLANATORY NOTE 



The series embodies results of investigations, usually of restricted 

 scope, intended to aid or direct management or utilization practices and 

 as guides for administrative or legislative action. It is issued in 

 limited quantities for official use of Federal, State or cooperating 

 agencies and in processed form for economy and to avoid delay in 

 publication. 



This report prepared under the auspices of the 



Pacific Salmon Investigations 

 U.S. Fish and Wildlife Service 

 Terminal Report 

 Contract Ui-19-008-2lO3 



