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Filtering by: Subject Fishes -- Effect of predation on -- Oregon -- John Day River Creator Hewkin, James A.

Reduction of salmonid predators by chemical treatment

Creator:

Reeher, James A., Hewkin, James A., West, Duane C., and Oregon. State Game Commission. Fishery Division

Abstract:

The upper drainage of the John Day River system produces summer steelhead and spring chinook salmon. The fish are generally confined to the main stem and its tributaries above Prairie City. The spawning and rearing areas are comparatively free of undesirable fish species, but salmonid smolts migrating downstream must travel...

Resource Type:

Technical Report

Full Text:

. Portable metal louver trap, John Day River. Note trap box on lower end of louver train. Figure 3. One of