CHINOOK SALMON MARKING, COLUMBIA RIVER 



239 



Table 19. — Chinook saltnon marked at Lillle White Salmon River hatchery during the summer of 

 1920, when approximately 10 months old, and recovered during the seasons of 1923 and 1924 — Con. "^ 



Table 20. — Chinook salmon marked at Little White Salm,on River hatchery during the summer of 

 1920, when approximately 10 months old, and recovered during the seasons of 1923 and 1924 



One of the objects of this experiment was to determine at what time of year 

 the salmon propagated at the Little White Salmon River hatchery pass through the 

 commercial fishing district on their spawning migration. The date of the earliest 

 reliable record of a recapture is August 2 and the latest recovery from the com- 

 mercial fishery is September 17. The records of three that were reported as 

 taken during July are believed to be incorrect, as the person who reported them is 

 known to have made other errors in reporting marked fish. The period August 15 

 to 20, inclusive, during which nearly half of the recaptures reported from the 

 commercial fishery were taken, may be designated as the time of the height of the 

 run. A closed season for commercial fishing is responsible for the lack of recaptures 

 during the period August 25 to September 10. 



