43 



3,000 — 



1976 1978 1980 1982 1984 1986 1988 1990 1992 1994 

 Ice Harbor Dam "Mining' ;||:; Egg Bank Returns 



Lyons Ferry Volunteers \\\ Lower Granite Dam Removals 



Figure 2. Number of adult Snake River fall chinook associated with the egg 

 bank program from 1975-1983 and with the Lyons Ferry hatchery 

 from 1984-1994. 



