CHAPTER 4 - ENVIRONMENTAL IMPACTS 



This chapter describes environmental effects of each alternative on the resources described in 

 Chapter 3 and contains the scientific and analytic basis for alternative comparison summarized in 

 Chapter 2. It is organized in the same manner as Chapter 3, by general resource categories and 

 their associated issues. 



AFFECTED RESOURCES 



Hydrology & Fisheries 



This section addresses the anticipated effects of the proposed activities on water and 

 fisheries resources within the affected watersheds. The primary concerns related to these 

 resources are potential impacts to water quality and aquatic habitat and the effects of these 

 impacts on downstream populations of bull trout and westslope cutthroat trout and other 

 beneficial uses such as domestic, irrigation and livestock water uses. In order to address 

 these issues the potential direct, indirect and cumulative effects of the proposed alternatives 

 on sediment delivery, water yield, stream water temperature, large woody debris recruitment 

 and fish habitat were analyzed. 



The following 2 tables summarizes harvest and road activities proposed for each watershed 

 analysis area under each of the proposed action alternatives: 



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