United States Department of the Interior 

 Oscar L« Chapman, Secretary 

 Fish and Wildlife Service 

 Albert M. Day, Director 



Special Scientific Report - Fisheries 

 No, 38 



SURVEY OF THE COLUMBIA RIVPJR AND ITS IRIBU'IARIBS 



PART 5 



By 



Reed S. Nielson 

 Fishery Research Biologist 



CONTENTS 



Page 



Introduction* • •••••• 2 



Part 1* Sub-Area Deschutes and John Day River Systems, 



List of Streams ••••••••«••••• 4 



The Surrey ••• 5 



Table of Obstructions and Diversions 20 



Part 2. Sub-Area Unatilla and Walla Walla River Systems, 



List of Streams ' 24 



The Survey 26 



Table of Obsti*uctions and Diversions. ••....•.. 39 



