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 14,8(X) 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 14,8(X) 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 (1,0(X) acre-feet) shall be delivered 

 to the United States upon demand at any tune during the 12-month period 

 commencing June 1st. 



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

 fributaries shall not be depleted by more than 60 percent of its namral 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. 



A3-3 



