120 r 



10 



100 



o 



M 

 O 



£ 

 o 



_o 

 E 



o 



Q 



Z 



o 



o 



90 



80 



70 



60 



50 



40 



30 



20 



r - 



o 



E 



CO 



■o 



c 

 o 



M 



3 

 O 



sz 



- 20 



30 



40 



50 



j60 



: 70 

 ^80 



LU 



-L. 



-L 



J. 



-L 



.J- 



-L. 



_L 



J_ 



J- 



20 30 40 50 60 70 80 



TOTAL DISSOLVED SOLIDS (in ppm) 



90 



Figure 1:- The relationship of conductivity and resistivity 

 to total dissolved solids in non-turbid streams 

 of the southern Appalachian Mountains, Plotted 

 points represent averages of grouped measurements 

 made on 133 streams. 



