- 21 - 

 Water Levels 



Two piezometric pressure maps, dated June and December 1988, were 

 prepared by Prairie Coal Ltd. Figure 9 was compiled from the 

 December map and shows the cone of depression formed by the pressure 

 contours in the Hart coal seam. The southern extent of the cone of 

 depression at the end of 1988 is unchanged from its position in the 

 previous year. The position of the 1 metre contour therefore remains 

 at 1.8 kilometres north of the International Boundary. 



Ground water was discharged at 16 locations during 1988. Fourteen 

 discharges were to Girard Creek, one was directly into Cookson Res- 

 ervoir, and one was into a tributary of Goose Creek. No water from 

 this last discharge reached the main stem of Goose Creek. 



There are indications that ground water levels have risen and are 

 causing salinity problems to agricultural lands to the south and west 

 of Morrison Dam. Saskatchewan Power Corporation is considering a 

 plan to dewater the area with a network of pumping wells. Pumpage 

 would be into Cookson Reservoir. 



Montana 



Location of the Montana monitoring wells is shown in the technical 

 monitoring schedule. During 1988, quarterly water levels were 

 obtained from 21 wells located in Montana. To illustrate past trends, 

 hydrographs for wells 5 and 10, which are completed in alluvium, are 

 presented in Figure 10. The water levels for all wells for the 

 period of record fluctuated within one foot of their average during 

 1988. These variations are mainly due to regional climatic conditions 

 and not dewatering. Over the period of record, no observable trend 

 in water levels is apparent. 



