111 



K 

 O 



o 

 u 



>• 

 I- 



s 

 c 



)£ 

 * 



>- 

 > 



U 



3 

 O 

 Z 



o 



u 



in 



a 



o 

 in 



o 



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



CHIWAWA RIVER NEAR MOUTH 



Averoge Monthly Water Quality 



1955 - 1957 



FIG. 28 



60 



