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 1st through to May 

 31st 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 

 1st to May 31st 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 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 decameters (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 decameters (12,(XX) 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. 



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. 



A3-3 



