then a continuous minimum flow of 0.057 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 1 st through to May 3 1 st of the following year. In addition, 

 a volume of 617 cubic decameters (500 acre-feet) shall be delivered to the United States 

 upon demand at any time during the 12-month period commencing June 1st. 



(iii) When the total natural flow of the Middle Fork Poplar River, as determined below the 

 confluence of Goose Creek, during the immediately preceding March 1 st to May 3 1 st 

 period is greater than 9,250 cubic decameters (7,500 acre-feet), but does not exceed 

 14,800 cubic decameters (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 

 1 st through August 3 1 st. A minimum delivery of 0.057 cubic metres per second (2.0 cubic 

 feet per second) shall then be maintained from September 1 st through to May 3 1 st of the 

 following year. In addition, a volume of 617 cubic decameters (500 acre-feet) shall be 

 delivered to the United States upon demand at any time during the 1 2 month period 

 commencing June 1 st. 



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

 confluence of Goose Creek, during the immediately preceding March 1 st to May 3 1 st 

 period exceeds 14,800 cubic decameters (12,000 acres-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 1,230 cubic 

 decameters (1 ,000 acre-feet) shall be delivered to the United States upon demand at any 

 time during the 12-month period commencing 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. 



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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