3.2.2 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 the apportionment of waters of the Poplar River basin. Although not 

 officially adopted by the two countries, the Poplar River Bilateral Monitoring Committee has adhered 

 to the Apportionment Recommendations in each of its annual reports. Annex 3 contains the 

 apportionment recommendation. 



3.2.3 Minimum Flows 



The recorded volume of the Poplar River at International Boundary from March 1 to May 31, 1994 

 was 13 200 dam^. Based on IJC recommendations and the assumption that the recorded flow is the 

 natural flow, the United States was entitled to a minimum discharge on the East Poplar River of 

 0.085 cubic metres per second (m^/s) for the period June 1 through August 31, 1994, and 

 0.057 m^/s from September 1 , 1 994 to May 31 , 1 995. The minimum flow for the period January 1 to 

 May 31, 1994 had previously been determined on the basis of the Poplar River flow volume for 

 March 1 to May 31, 1993. A hydrograph for the East Poplar River at International Boundary and the 

 minimum flow as recommended by the IJC are shown in Figure 3.2. 



Daily flows during 1994 occasionally fell below the recommended minimum because of beaver 

 activity, ice conditions, and changes in stage/discharge relationships. The deficit volume for June 

 through December, 1 994, was 35 dam^--an average of 0.002 m^/s per day. 



