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Wilbur Rehmann 

 September 11, 1980 

 Page Two 



We were reluctant to do further gill netting here because it kills the 

 fish. 



In light of this new information, I would suggest that it might be 

 useful to sample some of the lower canyon area (which was shocked in 

 1978) with gill nets. I could do this over a couple of days next spring. 

 It would probably also be useful co shock the Throops Lake section 

 (which was shocked from 1971-74). This shocking should not be done 

 until late next summer when there would be a greater possibility of 

 picking up marked trout from this summer's shocking above the falls. 



However, shocking is expensive; this study would require additional 

 funds in the existing monitoring contract with Northern Lights. 



FWR/ram 



cc: Larry Thompson, DNRC 

 Kathy Hadley, DNRC 

 Pat Graham, DFWP 

 Larry Pederman, DFWP 

 Bruce May, DFWP 



