2. Cumulative Effects 



No Action Alternative : No Timber harvesting or road construction activities would take 

 place, therefore no cumulative effects to sediment delivery and water quality would occur 

 with this alternative. 



Action Alternative : Due to harvest methods that would be employed on harvest units, 

 this alternative would not likely result in adverse impacts to water quality. By 

 implementing BMP's on all new and existing roads and harvest units, sediment 

 introduction into surface waterbodies is not likely to result in adverse cumulative effects 

 to water quality. Short-term impacts may result as described in the direct and indirect 

 effects. 



B. Sediment From Instream Sources 



1. Direct and Indirect Effects 



No Action Alternative : No timber har\'est or road construction is associated with this 

 alternative. Sediment increases are not likely since no increase in water yield is expected 

 with this alternative. 



Action Alternative : Approximately 386 acres of timber harvest in the Meadow Creek 

 watershed would be implemented under this alternative. The timber harvest and road 

 construction combined results in an increase of 241 EC A in Meadow Creek. Timber 

 harvest and road construction activities would result in a 1.5% increase in annual water 

 yield for the Meadow Creek watershed. This estimated increase is within the acceptable 

 limits to maintain a low degree of risk for instream erosion. 



2. Cumulative Effects 



No Action Alternative : No timber harvest or road construction activities are proposed 

 under this ahemative; therefore no water yield increase would result from 

 implementation of this alternative. Water yield would continue at or near the current 

 level and would decline as past harvest units within the watershed regenerate. 



Action Alternative : The cumulative annual water yield increase from this alternative 

 would be about 1 1.7% over modeled pre-disturbance levels. This includes all actions on 

 all ownerships within the watershed that contribute to water yield increase. The threshold 

 of concern set at 15% annual water yield increase; this alternative would be within the 

 recommended threshold. 



Because the annual water yield increases below the recommended threshold; it is unlikely 

 that adverse impacts to beneficial uses would result from the implementation of this 

 alternative. 



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