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In 1990, the recommended minimum daily flow of 0.028 cubic metres per 

 second (m 3 /s) was met or exceeded except on June 12 and December 30, 31. 

 Releases to meet the on-demand volume of 370 dam 3 were made May 1-31. A 

 salinity-control pumping project downstream from Cookson Reservoir and 

 upstream from the International Boundary has lowered the groundwater 

 table and, consequently, reduced the groundwater contribution to the flow 

 of the East Poplar River at the International Boundary. A total of 705 

 dam 3 was pumped back into Cookson Reservoir from this project in 1990. 



Quality Control 



Simultaneous discharge measurements have been made by personnel from the 

 U.S. Geological Survey and Water Survey of Canada annually since 1987. 

 To date, all measurement results have been within acceptable limits, and 

 many have compared exceptionally well. 



