populations near the source and near the mouth. Near the source, densities of brown trout 

 >4.0" increased 1,030 % from mean pre-project (2000 and 2001) densities of 1.3 to 14.5 

 fish/100' in 2005 (Figure 32). Total biomass of brown trout (fish >4.0") have increased 

 from 1.4 lbs/1000' to 46.7 lbs/1000' between 2001 and 2005, a 3,242 % increase. 



Sampling near the mouth in 2004-05 revealed a community-level shift from non- 

 salmonids (northern pikeminnow, largescale sucker and redside shiner) to a salmonid 

 community (Figure 34). The salmonid community currently includes low densities of 

 brown trout, cutthroat trout, and mountain whitefish. In 2004 a single bull trout was also 

 found in the sample. WSCT are now present throughout the spring creek in low densities 

 ranging from a CPUE of 0.2 near the source to 1 .2 near the mouth (Appendix A). 



Nevada Creek 



Restoration objectives: Restore water quality and fish habitat to levels suitable for frout. 



Nevada Creek is a 

 major tributary to the 

 Blackfoot River entering at 

 rm 67.8. It flows through a 

 wide valley converted from a 

 historical beaver wetland to 

 hay and grazing meadows. 

 Nevada Creek contributes a 

 significant amount of water 

 to the overall flow of the 

 Blackfoot River. 



Unfortunately, impaired 



water quality in Nevada 

 Creek originating from non- 

 point runoff, including high 

 temperatures, high nutrient 

 loading and high levels of 

 sediment degrades water 

 quality in the Blackfoot 

 River. 



It has long been held 

 that Nevada Spring Creek in 

 a restored state could 

 moderate water temperatures, 

 improve water quality and 

 provide a source of frout 

 recruitment to Nevada Creek 

 (Pierce and Peters 1990; 

 Pierce etal. 1997). 



UDstream 



Dowstream 



Fish Populations 

 monitoring 



and other 



Figure 35. Comparison of water temperatures in Nevada Creek up- 

 and downstream of Nevada Spring Creek, 2004 (top) and 2005 

 (bottom).. 



45 



