45 



1.0 



1 .0 



'MMMMMMMMM 

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



Figure 6.8 Cookson Reservoir Water Quality Data for Strontium and Fluoride, 

 1983 to 1991. 



Reservoir outflow is monitored at the culvert immediately below the Cookson Reservoir 

 on the East Poplar River. The primary sources of the outflow location are dam seepage 

 and riparian leakage. Seasonal trends are noted for this location during periods of water 

 release from the dam. Historically the water quality at this location has been poorer than 

 that of the reservoir but is now of better quality. The quality at this location has not 

 improved but the reservoir quality has decreased. 



