cubic metres per second (2.0 cubic feet per second) shall 

 be delivered to the United States on the East Poplar River 

 at the International Boundary during the succeeding period 

 June 1st through August 31st. A minimum delivery of 0.028 

 cubic metres per second (1.0 cubic feet per second) shall 

 then be maintained from September 1st through to May 31st 

 of the following year. In addition, a volume of 617 cubic 

 decametres (500 acre-feet) shall be delivered to the United 

 States upon demand at any time during the 12-month period 

 commencing June 1st. 



Hi) When the total natural flow of the Middle Fork Poplar 

 River, as determined below the confluence of Goose Creek, 

 during the immediately preceding March 1st to May 31st 

 period is greater than 9,250 cubic decametres (7,500 

 acre-feet), but does not exceed 14,800 cubic decametres 

 (12,000 acre-feet), then a continuous minimum flow of 

 0.085 cubic metres per second (3.0 cubic feet per second) 

 shall be delivered to the United States on the East Poplar 

 River at the International Boundary during the succeeding 

 period June 1st through August 31st. A minimum delivery 

 of 0.057 cubic metres per second (2.0 cubic feet per 

 second) shall then be maintained from September 1st through 

 to May 31st of the following year. In addition, a volume 

 of 617 cubic decametres (500 acre-feet) shall be delivered 

 to the United States upon demand at any time during the 12 

 month period commencing June 1st. 



iv) When the total natural flow of the Middle Fork Poplar, as 

 determined below the confluence of Goose Creek, during the 

 immediately preceding March 1st to May 31st period exceeds 

 14,800 cubic decametres (12,000 acre-feet) then a con- 

 tinuous minimum flow of 0.085 cubic metres per second (3.0 

 cubic feet per second) shall be delivered to the United 

 States on the East Poplar River at the International 

 Boundary during the suceeding period June 1st through 

 August 31st. A minimum delivery of 0.057 cubic metres per 

 second (2.0 cubic feet per second) shall then be maintained 

 from September 1st through to May 31st of the following 

 year. In addition, a volume of 1,230 cubic decametres 

 (1,000 acre-feet) shall be delivered to the United States 

 upon demand at any time during the 12-month period com- 

 mencing June 1st. 



c) The natural flow at the International Boundary in each of the 

 remaining individual tributaries shall not be depleted by more 

 than 60 percent of its natural flow. 



3. The natural flow and division periods for apportionment purposes 

 shall be determined, unless otherwise specified, for periods of 

 time commensurate with the uses and requirements of both countries. 



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