200 



)50 



100 



1958 SEASO 



COMPOSI 



(N=412: 



12 3 4 

 Exparinwnti 



RECOVERY LOCATIONS TESTED 



(A) GIBRALTAR 

 (I) COPPER R. 



(C) ILIAMNA R. 



(D) KNUTSON COMPLEX 



(E) NEWHALEN-NONDALTO 



-1 recovary fro* July 7-9 tagging 

 -1 " ■ ■ 10-12 • 



-1 " ■ ■ 13-13 • 



-1 • • " l*-20 • 





Figure 6.--Recoveries by experiment, 1958, Kvichak River system. For explanation of figure, 



see legend to figure 5, 



Copper River recoveries were virtually all 

 made by FRI personnel during stream surveys 

 well above the river mouth; lliamna River 

 recoveries by FRI personnel and by personal- 

 use fishermen, lliamna River is geographically 

 isolated, and personal-use fishing is con- 

 ducted well inside the river so there should 

 have been little doubt of the destination of 

 tagged fish taken there. 



Gibraltar River recoveries are primarily 

 from personal-use fishing. A well-defined bar 

 runs across the river mouth and parallels the 

 beach for about half a mile, and most personal- 

 use fishing is conducted well inside this. Tags 

 taken in this fishery are primarily from 

 Gilbraltar River fish. Occasional tags were 

 reported to have been caught at the winter 

 village, but since there is only a small and 

 erratic fishery there, it is safe to assume that 

 Gibraltar tags were predominantly "fish 

 village" recoveries. 



Knutson Complex recoveries were dra 

 from a beach spawning area extending l 

 about 8 miles along the north side of Knuts 

 Bay and from four streams. Two of the strea 

 enter Knutson Bay in the beach spawning ar 

 and two enter immediately adjacent to the w 

 end of the bay. It is impractical to different! 

 recoveries from within the Knutson Compl 

 First, there is an array of spring pond and s 

 channels bordering the two major streams 

 the west end of the bay. The streams dr 

 separate mountain valleys, but unite to forr 

 single channel as they cross the tundra. N( 

 the beach the single channel splits again, ; 

 two widely separated streams finally discha: 

 into lliamna Lake. Salmon may enter so 

 of the spring ponds and channels thro' 

 either or both of the streams. Second, a ma 

 source of Knutson Bay recoveries is a sn 

 but vigorous personal-use fishery in the w 

 end of the bay. This catches fish from t 

 beach and stream groups in the immedi 



16 



