CONTENTS 



Page 

 Introduction 1 



Methods 1 



Collection of samples 1 



Age determination 3 



Fingerling traps and their location 3 



Migration of wild and hatchery reared fish 8 



Time of migration 8 



Age of migrants 8 



River conditions during migration 17 



Age groups and time of migration 17 



Lengths of migrants 18 



Estimating ages from lengths . 26 



Migration of marked hatchery -reared fish 26 



Rate of travel of marked fish 26 



Catches of marked fish 26 



Lengths of marked migrants 33 



Summary and conclusions 35 



Literature cited 36 



Appendix 37 



