Figure 8 outlines the warming influence of Nevada Creek (rm 67.8) located 



between the Cutoff 

 and Raymond 



Bridge sections, as 

 well as cooling 

 influence of the 

 North Fork (rm 54.1) 

 between the 



Raymond Bridge 

 and Scotty Brown 

 sections of the 

 Blackfoot River. 



RESULTS PART 

 II: BLACKFOOT 

 RIVER TROUT 

 POPULATIONS 



In June 2004, 

 FWP completed bi- 

 annual fish 

 population surveys 

 at three monitoring 

 sections, including 

 two long-term 

 monitoring sections 

 (Johnsrud at river 

 mile mid-point 13.5 

 and Scotty Brown 

 Bridge at river mile 

 mid-point 43.9) of 

 the lower Blackfoot 

 River, and the Wales 

 Creek section - a site 

 established in 2002 

 downstream of 

 Nevada Creek. For 

 these surveys, 

 population estimates 

 and related statistics 

 are located in 

 Appendix C. 



Johnsrud Section 



The 2004 

 trout species 



Density/1000' ±95% CI 



30 

 25 

 20 

 15 

 10 



5 



O 



40 

 35 

 30 

 25 

 20 

 15 

 10 

 5 

 O 



1989 1990 1991 1993 1996 1998 2000 2002 2004 



rh""r^ 



Q 



1989 1990 1991 1993 1996 1998 2000 2002 2004 



Figure 9. Densities of brown trout (>6.0') in the Johnsrud (top) and Scotty 

 Rrnwn rhntfnm'i sections of the Rlar.kfnnt River 1988-7.004 



Densitv/1000' +95% CI 



1989 1990 1991 1993 1996 1998 2000 2002 2004 



30 

 25 

 20 

 15 

 10 

 5 

 





J±. 



M 



1989 1990 1991 1993 1996 1998 2000 2002 2004 



Figure 10. Densities of WSCT (>6.0") in the Johnsrud (top) and Scotty 

 Brown (bottom) sections of the Blackfoot River. 1989-2004. 



22 



