e 

 u 



o 

 u 



5 

 S 



o 



>■ 

 > 

 u 



3 



a 

 z 

 o 

 o 





20 



^ 



10 



40 



20 



60 



40 



20 



20 



300 



200 



300 



200 



100 



/i:::^ 



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



YAKIMA RIVER AT ENTERPRISE 



Average Monthly Water Quality 

 1954 - 1957 



FIG. 14 



38 



