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The relationship between boron and specific conductance at the 



sampling location during 1975-86 may be described by the 



equation: 



Boron = [0.00145 x specific conductance] - 0.268 (r2 = 0.73) 



Analyzed and regression generated boron concentrations for the period 

 of record are presented in Figure 5. 



Other Water Quality Characteristics 



Table 4 contains the multi-purpose water quality objectives recom- 

 mended by the International Poplar River Water Quality Board to the 

 IJC. No exceedences of the multi-purpose objectives occurred in 

 1986. 



Girard Creek and Cookson Reservoir 



Saskatchewan Environment and Public Safety reported water quality at 

 four locations in the Poplar River Basin during 1986: Girard Creek 

 south of Coronach, Cookson Reservoir at Highway 36, Cookson Reservoir 

 near Morrison Dam, and East Poplar River just below Morrison Dam. 

 These sites were sampled in February, May, August and November. 



A review of the data from these sites showed boron concentrations 

 varied from 0.72 to 1.75 mg/L, and TDS from 460 to 950 mg/L during 

 1986. All other variables were also present at concentrations within 

 the recommended water quality objectives for the East Poplar River 

 (Table 4). 



