The 2004 recorded flow volume of the East Poplar River at International Boundary was 3,040 dam'' 

 (2,460 acre-feet). This volume is 103 percent of the median annual flow of 2,940 dam^ (2,380 acre-feet) 

 for 1976-2003 (since the completion of Morrison Dam). 



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 the recommendation 

 has not been officially adopted, the Province of Saskatchewan has adhered to the apportion- 

 ment recommendation. 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, 2004 was 

 8,410 dam (6,820 acre-feet). Based on UC 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 

 0.057 cubic metres per second (m^/s) (2.0 cubic feet per second (ftVs)) for the period Jvme 1, 2004 to 

 August 31, 2004 and 0.028 m^/s (1.0 ftVs) for the period September 1, 2004 to May 31, 2005. The 

 minimum flow for the period January 1 to May 31, 2004 was 0.057 m^/s (2.0 ft^/s), determined on the 

 basis of the Poplar River flow volume for March 1 to May 31, 2003. A hydrograph for the East Poplar 

 River at International Boundary and the minimum flow as recommended by the UC are shown in Figure 

 3.2. 



Daily flows during 2004 met or exceeded the minimum flow recommended by the UC throughout the 

 year except for January 27 to March 25, when daily flows were below the recommended minimum due 

 to ice conditions in the channel. No flow was observed at the international boundary during most of this 

 period even though the recommended minimum flow was being released from Cookson Reservoir. 



