19 

 3.3 Ground-water 



3.3.1 Operations - Saskatchewan 



SaskPower's supplementary supply continued to operate during 1999, with the majority of ground- 

 water production occurring during the fall to spring period. This is a typical operational pattern for the 

 project and is done to minimize water losses. Limited production occurs during the summer months 

 in order to supply domestic users, including the Town of Coronach. In 1999, the project produced a 

 total of 4,410 cubic decameters (dam^) of ground water. This is lower than the 1998 production of 

 5,006 dam-' and the average 1991 to 1999 production rate of 5,279 dam^ per year. Prior to 1990 the 

 wells used for the supplementary supply were part of a dewatering network for coal mining operations, 

 which resulted in the high production levels experienced in the early to mid 1 980's. With the drought 

 of the late 1980's and early 1990's it was evident that there was a continued need for ground water to 

 supplement water levels in Cookson Reservoir. Consequently the wells were taken over by SaskPower 

 for use as a supplementary supply. Figure 3.12 shows the historical pumpage volume since 1976. 



Poplar River Power Station 



Supplementary Supply 



10000 



8000 



6000 



4000 



2000 



Year 



Figure 3.12 Supplementary Water Supply 



