11 



Figure 3.4: TDS Concentration for 2000 Grab Samples from East Poplar River 

 at International Boundary 



1200 



1000 



f 800 

 1 600 



Q 400 

 S 



200 



♦ 879 



♦ 938 ♦ 934 ♦ 935 ^ ^^ ♦ 936 



♦ 1021 



<> 1050 



♦ 720 



Figure 3.5: Three-Month Moving Flow-Weighted TDS Concentration for East 

 Poplar River at International Boundary 



1600 



1400 



i 1200 



E. 



•o 1000 - 



800 



(S 600 - 



o 400 ■ 



Gratxample^erived data 

 Regressioixierived data 



Q}Q)Q}Q)Q)0)Q)Q) 



"^ 'nJ 00 00 00 00 



00 CD O -^ rO 03 





8 iS 



D) D) lU fl> Q} 



(O (O CO 



CO tf> Q O 



00(0 0-' 



