o 

 O 



3 



in 



o 



-I 

 o 

 o 



9 

 a 



(E 

 3 



+ 



o 



3 

 Q 

 Z 

 O 



u 





JAU FEB MAR APR MAY JUN JUL. AUG. SEP OCT. NOV DEC. 



YAKIMA RIVER ABOVE THORPE 



Average Monthly Water Quality 

 1954-1957 



FIG. 16 



41 



