(A) Solving disease problems affecting spring and summer Chinook. 



Hatchery prod-uction of upriver spring Chinook has been seriously hampered by 

 the prevalence of bacterial kidney disease (BKD). This disease must be 

 controlled or other enhancement efforts, such as improved passage and flows, 

 will be undermined. See program section 704(h)(2)(D). 



(B) Exploring methods for substantially increasing and improving hatchery 

 production at existing hatcheries within the next 10 years. 



It has been estimated that production at existing hatcheries could be increased 

 substantially. Before the Council can assess adequately the need for new 

 hatcheries, it must have a better understanding of the potential at existing 

 hatcheries. See program section 704(f). 



(C) Improving supplementation techniques. 



Supplementation is a technique proposed for quickly rebuilding natural runs. It 

 involves planting hatchery fry and juveniles in the natural environment. 

 However, documentation of successful supplementation efforts is minimal, and 

 previous experiments have shown that, if proper attention is not paid to stock 

 selection, timing of release and other factors, supplementation easily can fail. A 

 better understanding of supplementation methods is needed to assess the 

 potential of natural production. See program sections 704(i)(3) and 704(k)(l)- 

 (2). 



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