United States Department of the Interior, Fred A. Seaton, Secretary 

 Fish and Wildlife Service, Arnie J. Suomela, Commissioner 



WATER QUALITY STUDY OF WENATCHEE AND MIDDLE COLUMBIA RIVERS 

 BEFORE DAM CONSTRUCTION 



by 



Robert 0. Sylvester 

 Project Supervisor 

 University of Washington 

 Seattle, Washington 



U. S. Fish and Wildlife Service Contract No. 14-19-008-2506 



United States Fish and Wildlife Service 

 Special Scientific Report — Fisheries No. 290 



Washington, D. C. 

 March 1959 



