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load of the watersheds (DHES, 1975; Spence, 1975). 



Natural conditions also contribute to water quality degradation, particularly 

 in the Lincoln area where soil conditions are unstable (DHES, 1975). 

 Management activities may initiate or additionally complicate non-point 

 pollution from natural conditions. Despite these affects, the Blackfoot 

 River generally has good water quality for its entire length (DHES, 1975; 

 Spence, 1975). However, seasonal impacts (siltation during spring runoff) 

 are reportedly a result of logging and agricultural activities (Dale, 

 1970). Though only seasonal, these impacts can significantly affect 

 fisheries habitat condition. 



