42 



50 



^ 40 



^ 30 



CD 



LU 



?20 



Q 10 



FULL SUPPLY VOLUME 



3.0 



2.5 



2.0 





RESERVOIR-B 



•a- ^'. 



' / i' 



E 



1.5 



1 .0 



o 

 o 



CO 



0.5 



0.0 



MMMMMMMMM 

 83 I 84 I 85 I 86 I 87 I 88 I 89 I 90 I 91 



Figure 6.2 Cookson Reservoir Water Quality Data for Boron, 1983 to 1991. 



MMMMMMMMM 

 83 I 84 I 85 I 86 I 87 I 88 I 89 I 90 I 91 



Figure 6.3 Cookson Reservoir Water Quality Data for Sulphate, 1983 to 1991. 



