11 



Figure 3.4: IDS Concentration for 2002 Water-Quality Samples from 

 East Poplar Ri\«r at International Boundary 



Q 400 



♦ 1005 



Figure 3.5; Three-Month Moving Flow-Weighted TDS Concentration for 

 East Poplar Ri\«r at International Boundary 



1600 

 1400 



--J 1200 



E 



Short- Term Objective 



■ Water-quality sample derived data 

 Regression derived data 



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