CONTENTS 



Page 



Introduction 1 



Experimental procedure 2 



Method of stratifying streams 2 



Description and method of fishing traps 4 



Method of estimating migration from trap catches 5 



Streamflow studies 7 



Fry marking and recovery experiments 7 



Method of estimating abundance in intertidal areas 7 



Migration of fry from area above traps: 



Duration of migrations 10 



Proportion of fry captured by traps 12 



Adjustments for incompletely trapped streams 12 



Number of fry migrating from above traps 13 



Abundance of pre-emergent fry in intertidal area below traps 13 



Total number of fry produced in eight study streams 14 



Fry migration from majority of streams in Prince William Sound 16 



Discussion and conclusions 17 



Summary 17 



Appendix 19 



