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Reservoir Storase 



Cookson Reservoir was near the full-supply level throughout the 



3 

 first half of the year, but contents decreased to 34 700 dam by 



December 31, because of below normal precipitation for the year. 



Elevations and contents for selected dates are given in Table 3. 



Table 3. Cookson Reservoir Storage Statistics for 1987 



Elevation Contents 



Date (1987) (metres) (cubic decametres) 



January 1 752.446 39 200 



April 8 (maximum) 752.814 42 000 



December 31 751.827 34 700 



Full-Supply Level 753.000 43 400 



Apportionment 



In 1976 the International Souris-Red Rivers Engineering Board, 

 through its Poplar River Task Force, completed an investigation and 

 made a recommendation to the Governments of Canada and the 

 United States regarding an apportionment of waters of the Poplar 

 River basin. Although not officially adopted by the two countries, 

 the Poplar River Bilateral Monitoring Committee has ascribed to the 

 Apportionment Recommendations in each of its annual reports. 

 Annex 4 contains the Apportionment Recommendation. 



Minimum Flows 



The recorded runoff volume of the Poplar River at the International 



3 



Boundary from March 1 to May 31, 1987 was 3 960 dam . For the 



purposes of interpreting the apportionment recommendations of the 

 IJC, the recorded flow is assumed to be the natural flow. Based on 



