12 



I Figure 3.5: Five- Year Moving Flow-Weighted TDS Concentrations for East Poplar 

 ! River at the International Boundary 



1200 



1000 - 



«d 800 



o> 



E, 



c 



% 600 



o 400 

 O 



200 - 



• Figure 3.6: Daily TDS Concentration, 1982 to 1995, East Poplar River 

 j at the Intennational Boundary 



1600 



Dec-81 



Dec-83 Dec-85 



Deo-87 



Dec-89 Dec-91 Dec-93 Dec-95 



Slope = 10.03 mg/L/year 

 R-Squared = 0.11 



— Linear regresssion line 



