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 4.0 SUPPLEMENTARY WATER SUPPLY (OLD COAL MINE DEWATERING) 



4.1 Operations 



Since January 1, 1990, SaskPower has been operating the old Prairie Coal mine 

 dewatering network for the purpose of using groundwater to supplement surface flows into 

 Cookson Reservoir. Since taking over the network, SaskPower has undertaken a 

 significant amount of work in the area. This work includes: repair, closing or 

 abandonment of existing wells, accurate quantification of pumping rates, replacement of 

 damaged piezometers, a hydrogeological evaluation of the East Poplar River basin and 

 a numerical model. 



In 1991, a total of 21 wells were in operating status, 5 were closed and 20 were 

 abandoned. The wells that have been closed can still be made available for future use 

 if the need arises. Welte that were on private land, but were scheduled for abandonment, 

 were initially offered to the landowner for their private use. Two of these wells were taken 

 over by the landowner and the remainder were abandoned. 



4.2 Pumpaqe Volumes 



A summary of monthly pumpages is shown in Table 4.1 



