50 



Combined Normal- and Late-timedSpawpers 30 



Ut«-ti»ed Spivmen 30 



Maria* Interception 30 



Juvenile Production 30 



Currant Coho Run Size and Eiatorical Levels 32 



CHUM 8ALMOH 34 



Terminal Xrti Run Sise and Escapement Goal 34 



Currant Run Sisa and Eiatorical Laval* 35 



STEELHEAD 36 



Terminal Area Run Sisa and Escapeaent Ooala 36 



Winter Run 36 



"■'— r Run 37 



Currant Total Run Size and Eiatorical Levels 37 



STURGEON 38 



White Sturgeon Population Status 39 



Oreea Sturgeon Population Status 40 



AMERICAN SHAD 40 



FORAGE RESOURCES 41 



Chapter 4: HATCHERY PRODUCTION OF SALMONIDS ... 42 



HATCHERY HISTORY 42 



HATCHERY STOCKS 44 



Spring Chinook Salaon .. 45 



Pall Chinook Salaon 45 



Coho Salaon 45 



Chua Salaon 46 



Winter Run Steelhead 46 



Suaaar Run Steelhead 46 



Other Salaonids 46 



HATCHERY FACILITIES AND PRACTICES 47 



HATCHERY FISH PRODUCTION 4B 



Pall Chinook Salaon 49 



Coho Salaon 49 



Chua Salaon SO 



Winter Steelhead 50 



HATCHERIES AS A TOOL FOR REBUILDING WILD STOCKS 51 



Chapter 5: CAUSES OF DECLINE 52 



ENVIRONMENTAL PROBLEMS IN GRAYS HARBOR AND THE LOWER 



CHEHALIS RIVER 52 



Pulp Mill Effluents 52 



Differential Adult Production 52 



Differential Snolt Survival to Adult Catch 52 



Poor Saolt Survival in the Estnarr 53 



Toxic Chemicals in Mill Effluent 53 



WPP's Conclusions and Recommendations 54 



Relative Importance of Effluents to Pish Mortality .... 54 



Recent Clean-up of Pulp Mill Effluent 54 



Monitoring Pulp Mill Effluent 55 



Sediments 55 



Bioaccuaulation 55 



Puture Outlook 55 



vi 



