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Skookumchuck Dajr. 



Work should be done to determine the feasibility of using the trap at 

 Skookumchuck Dam to pass coho salmon above the dam. If feasible, this process 

 could open additional spawning and rearing area. There is concern, however, 

 that the large, reservoir-reared coho Btnolts would prey on spring Chinook fry 

 (Stone, WDF, pers. comm. ) . 



Worth .For* Newaukum Diversion Dam 



The three sources for the cities of Centralia and Chehalis are the North Fork 

 Newaukum River, the main stem Chehalis, and wells, the principal one being 

 north of Centralia. The primary issue is whether increased use of the city 

 well would deplete Chehalis River instream flow as much as existing surface 

 withdrawals do. A hydrological study might be able to answer this. 



The feasibility of informally protecting instream flow on the North Fork 

 Newaukum should be investigated. An instream flow study of habitat available 

 at different flows would help resolve this question. 



Conservation of Irrigation Water 



Information is needed to support meeting the established WDOE base flows on 

 all streams by promoting voluntary conservation of irrigation water. 

 Irrigated agriculture in the upper Chehalis River System centers around the 

 Newaukum and South Fork Chehalis sub-basins, where most streams have been 

 closed to further water appropriation since 1975 to protect water quality and 

 fishery resources. Basic information, such as instream flow studies and 

 continual monitoring of streamflows is needed to assess the present situation 

 and monitor rehabilitation programs. 



Agricultural Practices 



GIS-based soilB and land-use maps are necessary components for 1) helping to 

 determine regions where streams flow through mostly farmland, and 2) guiding 

 recommendations for fencing and vegetation in streambank restoration projects. 



Forest Practices 



Timber. Fish, and Wildlife Ambient Monitoring 



The Chehalis Basin is particularly important for forestry research because of 

 its large size and extent of land in commercial timber (Jeff Light, 

 Weyerhaeuser Co., pers. comm.). Past TFW ambient monitoring has been 

 conducted by Quinault Nation on Brittain and Elwood Creeka, tributaries of the 

 Humptulips, and on an unnamed tributary of the West Fork Satsop (Dave Schuett- 

 Hames, NWIFC, pers. comm.). Not enough ambient monitoring had been done to 

 date in the Chehalis Basin or in southwest Washington as a whole; a special 

 need exists for documenting baseline conditions In old growth, for no such 



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