Figure 3.8: Monthly Mean Boron Concentration for 2004 

 Derived from Water-Quality Samples or Average Mid-Month Monthly Conductance Data 

 Collected by Specific-Conductance Monitor at East Poplar River at International Boundary 



2.20 



2.00 



<M.84 ♦I- 



♦ 2.00 



♦ 2.04 



♦ 1.91 ♦1.92 ^1.94 



i> 1.93 



♦ 1.74 



♦ 1.70 



♦ 1.3 9 



Water-quality samples were obtained in May, June, July, and September 



Figure 3.9: Three-Month Moving Flow-Weighted Average Boron Concentration 

 for East Poplar River at International Boundary 



3.5 



0.5 



•■- CM n 



CO o> o ■■- CiJ CO 



oooooboboooococoa>o)c>o0>o)a)cno>d) 



00 (» O 1- CO CO 



(Cn3cOG3n]n](OnicOfl3(Q(i3n3(t3coa]n](\] 



(0 (0 CO n] CO CO (Q 



(0 (0 CO CO CO 



15 



