spawning and niirsery areas in Van Duzen River and North Fork of Eel River were completed. 

 Water reqiiirements for seaward migratoiT- juvenile salmonids and the relation between water 

 discharge and usable spawning gravel were investigated. 



California AFC-8 Richard Hallock Completed 1968 



Delta migration study - Behavior pattern of adult king salmon as influenced by stream flow and 

 other selected physical factors were observed by electronic tracking during the movements of the 

 fish through the San Joaquin River Delta. Eighty-eight fish were captured with trammel net in 

 the lower river, marked with sonic tags, and released. Their upstream migration was ob- 

 served by fixed recording stations. Dissolved oyxgen and temperatures were recorded at key 

 locations. 



Oregon AFC-18 Wallace Hublou $235,000 



Development and improvement of hatchery techniques for Pacific salmon and steelhead trout - 

 Research is undertaken to improve the nutritional qualities and physical characteristics 

 of pellets used to feed Pacific salmon and to develop methods for fish disease 

 prevention, detection, and control in hatcheries. The work is being done at the Fish 

 Commission's laboratory at Clackamus and at Oregon State University. 



Oregon AFC-19 Robert Loeffel $38,600 



Management of the troll salmon fishery with emphasis on the collection of data on shore and 

 at sea for regulation formulation - The use of barbless hooks as a management tool in the 

 troll salmon fishery and the radionuclide Zn^5 as an identification mark of Oregon-Washington 

 coho salmon when mixed with salmon from other areas are investigated. In addition, catch 

 statistics for the troll chinook and coho salmon fishery are collected and analyzed. 



Oregon AFC-21 Ernest R. Jeffries $12,200 



Increased production of anadromous salmonids i n Oregon coastal streams and lakes - Coastal 

 streams and lakes are surveyed to locate potential sources of hatchery water and salmon spawning 

 and nursery areas, and to map barriers to fish migration. The streams and lakes are sampled, 

 also, to determine numbers of young coho and chinook salmon in the nursery areas and to observe 

 how the planted adults have survived and grown. 



Oregon AFC-23 Jajnes D. Hall $22,/i00 



Effects of lo gg ing on salmon populations in coas tal streams - Data on spawning populations, 

 juvenile survival, production, and yield of smolts from three coastal streams during one 

 7-year prelogging inventory are summarized for publication. Field data were collected on 

 abundance of juvenile salmon after the area was logged. Also, studies began on factors that 

 affect the rearing capacity of selected streams. 



Oregon AFC-26 ^ Robert Loeffel |81,000 



Research and management on wild and hatchery-produced salmon and steelhead in Oregon south 

 coastal st r eams - The status of Elk River fall chinook salmon stocks is studied to determine 

 the effects of hatchery-produced fish on natural stocks. Coincident and similar studies are 

 made on the adjacent Sixes River, which is the experimental control. Estimates of juvenile 

 abundance are made in the streams in July and in the estuary in October. Size of spawning 

 populations is calculated from tag and recovery program. Biological data such as growth of 

 juveniles, age, composition, and timing of runs are collected. Competitive relation of 

 young Chinook and coho salmon is investigated, also. 



Oregon AFC-39 Robert Loeffel $32,600 



Salmon investigations on the Northern Oregon Coast - Results of hauling hatchery-produced 

 adult and fry coho salmon to barren coastal streams and lakes and the planting of coho smolts 

 into nonhatchery streams are evaluated. 



Washington 1-18-R Harry Senn 



Investigation of effects of Grays Harbor waters on coho emigration - Marked yearling coho 

 salmon are released in drainages of Grays Harbor to determine the differential in harvest 



A9 



