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Filtering by: Subject Fishes -- Effect of predation on -- Oregon -- John Day River

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
An economic analysis of alternative water allocations and habitat investments for anadromous fish production, John Day Basin, Oregon

Creator:

Cerda, Arcadio Alberto

Abstract:

This thesis focuses on the economic efficiency of alternative habitat, streamfiow, and land use allocations within a major drainage of the Pacific Northwest. Specifically, productivity of present habitat and streamfiow conditions is evaluated with respect to anadromous fish species (chinook salmon and steelhead trout) in the John Day River Basin,...

Resource Type:

Dissertation

Full Text:

BASIN The John Day River Basin is situated in the northeast region of Oregon (see Figure 1.1), and is