"A Field Bioassay of Potential Effects of Champion 

 Pulp Mill Effluents on Brown Trout Egg and Sac Fry 

 Survival in the Clark Fork River" (April 15, 1985) 



"Middle Clark Fork River Fishery Monitoring Study: 

 Evaluation of the Effects of Pulp and Paper Mill 

 Effluents on the Fish Population" (October 15, 

 1985) 



In the autumn of 1985, fish population estimates were 

 conducted at Harper's Bridge, Superior and two sites near 

 Huson. 



FUTURE ACTIVITIES ; Further evaluations of intergravel 

 environment suitability will be conducted, along with 

 measurement of physical parameters such as stream gradient, 

 average channel width and development. The latter measure- 

 ments will help identify differences between reaches which 

 might in part explain anomalies in the fisheries (i.e.", the 

 almost complete absence of brown trout below Missoula). A 

 final report on the fish egg bioassays will be prepared in 

 spring of 1986. 



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