United States Department of the Interior 

 Oscar L. Chapman, Secretary 

 Fish and Wildlife Service 

 Albert M. Day, Director 



Special Scientific Report - Fisheries 

 No. 39 



SURVEY OF THE COLUMBIA RIVER AND ITS TRIBUTARIES 



Part 6 



Area V - Snake River system from the 

 mouth through the Grande Ronde River 



By 



Zell E. Parkhurst 

 Fishery Research Biologist 



CONTENTS 



Page 



Introduction 2 



Part 1. Main Snake River and tributaries, exclusive of 



sub-areas* •••••••••• • 1 



List of Streams 4 



The Survey 5 



Table of Obstructions and Diversions 16 



Part 2, Sub-area Clearwater River • • 17 



Introduction • 17 



List of Streams 19 



The Survey . 21 



Table of Obstructions and Diversions. 30 



Part 3. Sub-area Grande Ronde River 31 



Introduction 31 



List of Streams •• 33 



The Survey 36 



Table of Obstructions and Diversions 57 



