UNITED STATES DEPARTMENT OF THE INTERIOR, Stewart L. Udall, Secretary 



FISH AND WILDLIFE SERVICE, Clarence F. Pautzke, Commissioner 

 Bureau of Commercial Fisheries, Donald L. McKernan, Director 



FACTORS INFLUENCING THE RETURN OF 

 FALL CHINOOK SALMON (Oncorhynchus tshawytscha) 



TO SPRING CREEK HATCHERY 



by 

 Charles O. Junge, Jr, and Lloyd A. Phinney 



Contribution No. 151, College of Fisheries, University of Washington 



United States Fish and Wildlife Service 

 Special Scientific Report — Fisheries No. 445 



Washington, D.C. 

 June 1963 



