- 47 - 



not be enough to have significant impacts on residents. Nonetheless, 

 well inventories and the monitoring network may have to be extended in 

 the area. In addition, possible interactions with Fife Lake may have to 

 be addressed. There also seems to have been minor expansion of the cone 

 of depression easterly towards Cookson Reservoir. 



In order to obtain additional knowledge of the area, Sask Power has 

 undertaken a groundwater modeling study for the supplementary supply. It 

 is hoped that this study will provide additional information on the yield 

 of the aquifer and possible impacts on the International Boundary and the 

 area northwest of the supplementary supply wells. 



Salinity Dewatering Project 



A second groundwater project is being undertaken by Sask Powei near 



Cookson Reservoir. This is a dewatering project which is intended to 



reduce a salinity build-up that appears to have resulted from an increase 



in the water table below the dam following the filling of the reservoir. 



The project went into operation in the fall of 1989, with three wells in 

 operation. A total of 131 dam 3 (106 acre/ft) was pumped from the three 

 wells in 1989. During the fall of 1990, an additional 4 wells were 

 installed and one was put into operation. Total pumpage from all 

 salinity project wells for 1990 was 706 dam 3 (572 acre/ft) . Table 8 

 shows monthly pumpages for 1990 from each well. Van der Kamp and 

 Maathuis (1989) concluded that dewatering rates up to 1,100 dam 3 /year 

 (890 acre/ft/year) are possible. 



