2. Data on spawning for lakes of the Naknek River system 1959-63 4 



3. Percent frequency of occurrence and percent total number offish captured in lakes of the Naknek 

 River system 1962 7 



4. Numbers of age sockeye salmon taken in Coville Lake and Iliuk Arm 1964 10 



5. Subplot portion of split-plot analysis of variance of catch of juvenile sockeye salmon in three lake 

 basins of the Naknek system 1962-64 11 



6. Two-way analysis of variance of abundance of juvenile sockeye salmon in selected lakes of the 

 Naknek system 1961-64 12 



7. Mean number of age and age I sockeye salmon taken in Naknek River system, August 1961-64. . 14 



8. Relative abundance of spawning grounds and average catch per unit of effort of age sockeye salmon 



in July 1961-63 in lakes of the Naknek River system 16 



9. Mean fork length and standard deviation of age sockeye salmon taken in Coville Lake and Coville 

 River, 1 1 July to 1 Sept. 1963 19 



10. Mean fork length and standard deviation of age sockeye salmon taken in Coville Lake and Coville 

 River, 4 July to 5 Sept. 1964 19 



11. Split-plot analysis of variance of abundance of pond smelt, threespine stickleback, and ninespine 

 stickleback 1962-64 22 



12. Estimated number of age sockeye salmon migrating from Coville Lake to Grosvenor Lake, 22 July to 



10 Sept. 1961 26 



13. Estimated numbers of age and age I sockeye salmon migrating from Coville Lake to Grosvenor 

 Lake, 29 May to 15 Sept. 1962 27 



14. Estimated numbers of age and age I sockeye salmon migrating from Coville Lake to Grosvenor 

 Lake, 20 June to 17 Sept. 1963 27 



15. Estimated numbers of age and ~~= I sockeye salmon migrating from Coville Lake to Grosvenor 

 Lake, 1 1 July to 7 Sept. 1964 28 



16. Estimated numbers of age sockeye salmon migrating from Grosvenor Lake to Iliuk Arm, 15 July to 



17 Sept. 1962 28 



17. Number of age sockeye salmon in Coville Lake at the end of summer and number that migrated from 

 lake during summer 1961-64 28 



18. General magnitude of age sockeye salmon in interlake migrations and of lake populations in July and 

 August 1961-63, Coville River-Iliuk Arm area 29 



19. Rate of catch and mean size of age sockeye salmon migrating down Coville and Grosvenor Rivers 

 between July and September 1961-62 30 



20. Numbers of recently emerged sockeye salmon captured on shores of Grosvenor River in May and 

 June 1962 32 



21. Mean fork lengths of age and age I sockeye salmon in each lake of Naknek River system and Coville 

 and Grosvenor Rivers on 20 August and 1 September 1961-64 33 



22. Mean surface water temperatures, mean number of age and age I sockeye salmon, pond smelt, and 

 threespine and ninespine sticklebacks, and mean fork lengths of age sockeye salmon in lakes of the 

 Naknek River system 1961-63 43 



23. Stomach contents of lake trout captured in 1963 48 



24. Length frequencies of lake trout captured in Grosvenor Lake 1963 48 



25. Length frequencies of lake trout captured in Grosvenor Lake 1964 49 



26. Length frequencies of humpback whitefish captured in Coville Lake 1963 49 



