Table 3. — Fall chinook salmon annual fry-fingerling releases 



by brood year, 1944—56, and adult returns to 



hatcheries, 1948-60. 



1/ Brood year refers to year eggs collected. 



2/ Figures rounded to nearest 1,000. 



3/ Only dominant 4-year-old class considered. 



4/ Beyond 1957, 4-year-old class is not dominant. 



began about 1900 and is still continued. In 

 recent years concrete rearing ponds were 

 constructed adjacent to the weir. Eggs se- 

 cured are incubated at Spring Creek hatchery, 

 and fry returned to Big White Salmon River 

 ponds for rearing. Racks are installed to 

 divert fish to the spawning ponds. Each year. 



however, many fish spawn naturally in the 

 river (table 6). Total number of salmon 

 estimated to have entered Big White Salmon 

 River in period 1945-60 is approximately 

 80,000 (table 7). Nearly 76,230,000 fry and 

 fingerlings were released during this period 

 (table 5). 



