5.000 



g 1.000 



a. 



3 



o 



100 



10 



+ 



Chronic Toxicity Criteria for Cu (EPA 1985a) 

 (criteria vary based on water hardness) 



1 



STATIONS 



CLARK FORK BASIN STUDY 

 SAMPLING LOCATIONS 



I SBC baloo Coiorado Tallinqi 



3 SBC AC Sll*s Croasuiq ii««r KmmMtrf 



3 sac «tx>«* Wan Spcmqa (ACS) traacaanc 



4 ACa Tont 12 dl>char9« (SUvar Bov Craak) 



(See Figure 3-14 for station locations) 

 Source: DHES-WQB FY 85-87 data. 



FIGURE 3-16. TOTAL RECOVERABLE COPPER CONCENTRATIONS IN SILVER BOW CREEK 



3-68a 



