

w 



I- 



ll. 

 oca 



t 



50 



X 

 a. 





gf 





M 

 10 



1-0 



OK 



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



SNAKE RIVER AT MOUTH 



Average Monthly Water Quality 

 1954 -1957 



FIG. 9 



31 



