\ Position 4 Surface & 

 ®\ Middepth 



\ 

 \ 



\ 

 \ 

 .Log \ 





\ \ 

 \ \ 



\ \ 

 \ \ 

 \ \ 

 \ \ 

 W 



^ Position 2 SurfacV, 



\ \ 



©Position 8 Surface and Middepth 



\ Position 8 Bottom 



Position 10, \ 

 Middepth j , 



I® Position 10 Surface 



® Buoys with lights 



Trawling courses 



Depths sampled 

 Surface - 3.7m. 

 Middepth 11.0-14.6 m. 

 Bottom 21.9-25.6 m. 



Mossyrock Fish Hatchery 



x \ f '' 0» 



"Jyjn'Launching raft 

 — a □- 



Gill net array 



* 



FLOW 

 COWLITZ RIVER 



Figure 5. — Trawling courses and sampling depths, Mayfleld Reservoir. 



7 



