49 



TABLE OF CONTENTS 



EXECUTIVE SUMMARY i 



LIST OF ACRONYMS AND ABBREVIATIONS xi 



Chapter 1: DESCRIPTION OF THE BASIN i 



PHYSICAL DESCRIPTION 1 



HYDROGRAPBTC DESCRIPTION 4 



ECONOMIC AND SOCIAL DESCRIPTION 5 



Daaographi.es 5 



Economic Base < ■ 6 



Forest Products 6 



Agriculture 7 



Tourisa 7 



Pianino and Related Activities 7 



Valua of Salaon riaherioa 9 



Trenda In Economic I apart 11 



Bene fit a of Stock Recovery ................ 12 



Valua of Sturgeon Fisheries 12 



Social Value* Connected with Fishing 13 



Chapter 2: HISTORICAL ACCOUNT OF THE FISHERY 



RESOURCES AND HABITATS 14 



HISTORY OF PISHING ON CHEHALIS BASIN SALMON AND 



8TEELHEAD 14 



Chehalis Rirar Baain Fisheries 14 



Marine Interception 15 



HABITAT HISTORY 16 



Agriculture 16 



Logging 17 



Hiatorr of the Induatrr 17 



Continuing Effecta of Old Logging Practices 18 



Recent Forest Practicea Improvements 20 



Gravel Mining 20 



Urbanisation 21 



Estuarina Dredging and Pilling .... 21 



Dams and Diversions 22 



Industrial Haste Disposal 22 



Chapter 3: HISTORY AND CURRENT STATUS OF FISH 



POPULATIONS 24 



CHINOOK SALMON 24 



Terminal Area Run Sise and Escapement Goals 24 



Spring Chinook 24 



Pall Chinook 25 



Pall Chinook Marine Interception 26 



Juvenile Chinook Production 26 



Currant Pall Chinook Total Run Sise and Historical Levels ... 27 



COHO SALMON 29 



Terminal Area Run Sise and Eacapaaent Ooala 30 



