- 17 - 

 Reservoir Storage 



Cookson Reservoir was near the full-supply level throughout the 

 year, with contents increasing from 37,600 dam^ on January 1 to a 

 maximum of 45,600 dam^ on March 3. Elevations and contents for 

 selected dates are given in Table 2. 



Table 2. Cookson Reservoir Storage Statistics for 1986 



Elevation Contents 



Date (1986) (metres) (cubic decametres) 



January 1 752.222 37 600 

 March 3 753.278 45 600 

 December 31 752.448 39 200 



Full-Supply Level 753.000 43 400 



Storage increased during the year by 1,600 dam^ owing to above normal 

 precipitation in the fall and base flows in Girard Creek which are 

 maintained by dewatering operations at the Poplar River Mine. These 

 flows assisted in offsetting the evaporative losses and releases 

 from the reservoir. 



Reservoir storage statistics (contents) figures given in the 1985 

 annual report were incorrect. The correct statistics are given in 

 Table 3. 



Table 3. Cookson Reservoir Storage Statistics for 1985 

 (Corrected) 



Elevation Contents 



Date (1985) (metres) (cubic decametres) 



January 1 752.149 37 000 



April 19 752.805 41 900 



December 31 752.222 37 600 



Full-Supply Level 753.000 43 400 



